diff --git a/api/@ohos.application.AccessibilityExtensionAbility.d.ts b/api/@ohos.application.AccessibilityExtensionAbility.d.ts
index bb65f013b3a512b56c8393ffbdbea3d2521a49f8..8ed280280d7afa197e882d8312caddad5b793a32 100644
--- a/api/@ohos.application.AccessibilityExtensionAbility.d.ts
+++ b/api/@ohos.application.AccessibilityExtensionAbility.d.ts
@@ -159,6 +159,744 @@ export default class AccessibilityExtensionAbility {
    * @deprecated since 12
    */
   onKeyEvent(keyEvent: KeyEvent): boolean;
+
+  /**
+   * Called when extension ability is connected.
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  onAccessibilityConnect(): void;
+
+  /**
+   * Called when extension ability is disconnected.
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  onAccessibilityDisconnect(): void;
+
+  /**
+   * Called when an accessibility event occurs, such as when the user touches the application interface.
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @param { AccessibilityEventInfo } event Indicates an accessibility event.
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  onAccessibilityEventInfo(event: AccessibilityEventInfo): void;
+
+  /**
+   * Called when a physical key is pressed, such as when the user presses the volume button .
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @param { KeyEvent } keyEvent Indicates the physical key event.
+   * @returns { boolean }
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  onAccessibilityKeyEvent(keyEvent: KeyEvent): boolean;
+}
+
+/**
+ * Indicates the accessibility event.
+ * It provides the event type and the target element of the event if any.
+ *
+ * @typedef AccessibilityEventInfo
+ * @syscap SystemCapability.BarrierFree.Accessibility.Core
+ * @systemapi
+ * @since 20
+ */
+declare interface AccessibilityEventInfo {
+  /**
+   * EventType
+   *
+   * @type { AccessibilityEventType }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  eventType: AccessibilityEventType;
+
+  /**
+   * Target
+   *
+   * @type { ?AccessibilityElement }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  target?: AccessibilityElement;
+
+  /**
+   * TimeStamp
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  timestamp?: number;
+
+  /**
+   * The content of add/remove accessibility extraInfo text.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  extraInfo?: string;
+}
+
+/**
+ * AccessibilityEvent type
+ *
+ * @enum { number }
+ * @syscap SystemCapability.BarrierFree.Accessibility.Core
+ * @systemapi
+ * @since 20
+ */
+export enum AccessibilityEventType {
+  //EventType
+  /**
+   * AccessibilityFocus type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_ACCESSIBILITY_FOCUS = 0,
+
+  /**
+   * AccessibilityFocusClear type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_ACCESSIBILITY_FOCUS_CLEAR = 1,
+
+  /**
+   * Click type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_CLICK = 2,
+
+  /**
+   * LongClick type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_LONG_CLICK = 3,
+
+  /**
+   * Select type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SELECT = 4,
+
+  /**
+   * HoverEnter type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_HOVER_ENTER = 5,
+
+  /**
+   * HoverExit type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_HOVER_EXIT = 6,
+
+  /**
+   * Focus type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_FOCUS = 7,
+
+  /**
+   * TextUpdate type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_TEXT_UPDATE = 8,
+
+  /**
+   * TextSelectionUpdate type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_TEXT_SELECTION_UPDATE = 9,
+
+  /**
+   * Scroll type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SCROLL = 10,
+
+  /**
+   * RequestFocusForAccessibility type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_REQUEST_FOCUS_FOR_ACCESSIBILITY = 11,
+
+  /**
+   * AnnounceForAccessibility type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_ANNOUNCE_FOR_ACCESSIBILITY = 12,
+
+  /**
+   * RequestFocusForAccessibilityNotInterrupt type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_REQUEST_FOCUS_FOR_ACCESSIBILITY_NOT_INTERRUPT = 13,
+
+  /**
+   * AnnounceForAccessibilityNotInterrupt type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_ANNOUNCE_FOR_ACCESSIBILITY_NOT_INTERRUPT = 14,
+
+  /**
+   * ElementInfoChange type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_ELEMENT_INFO_CHANGE = 15,
+
+  /**
+   * Scrolling type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SCROLLING = 16,
+
+  // WindowUpdateType
+  /**
+   * Window add type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_WINDOW_ADD = 17,
+
+  /**
+   * Window remove type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_WINDOW_REMOVE = 18,
+
+  /**
+   * Window bounds type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_WINDOW_BOUNDS = 19,
+
+  /**
+   * Window active type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_WINDOW_ACTIVE = 20,
+
+  /**
+   * Window focus type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_WINDOW_FOCUS = 21,
+
+  /**
+   * Window property type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_WINDOW_PROPERTY = 22,
+
+  /**
+   * Window layer type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_WINDOW_LAYER = 23,
+
+  //TouchGuideType
+  /**
+   * TouchBegin type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_TOUCH_BEGIN = 24,
+
+  /**
+   * TouchEnd type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_TOUCH_END = 25,
+
+  //PageUpdateType
+  /**
+   * PageContentUpdate type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_PAGE_CONTENT_UPDATE = 26,
+
+  /**
+   * PageStateUpdate type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_PAGE_STATE_UPDATE = 27,
+
+  /**
+   * PageOpen type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_PAGE_OPEN = 28,
+
+  /**
+   * PageClose type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_PAGE_CLOSE = 29,
+
+  //GestureType
+  /**
+   * left type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_LEFT = 30,
+
+  /**
+   * leftThenRight type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_LEFT_THEN_RIGHT = 31,
+
+  /**
+   * leftThenUp type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_LEFT_THEN_UP = 32,
+
+  /**
+   * leftThenDown type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_LEFT_THEN_DOWN = 33,
+
+  /**
+   * right type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_RIGHT = 34,
+
+  /**
+   * rightThenLeft type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_RIGHT_THEN_LEFT = 35,
+
+  /**
+   * rightThenUp type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_RIGHT_THEN_UP = 36,
+
+  /**
+   * rightThenDown type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_RIGHT_THEN_DOWN = 37,
+
+  /**
+   * up type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_UP = 38,
+
+  /**
+   * upThenLeft type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_UP_THEN_LEFT = 39,
+
+  /**
+   * upThenRight type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_UP_THEN_RIGHT = 40,
+
+  /**
+   * upThenDown type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_UP_THEN_DOWN = 41,
+
+  /**
+   * down type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_DOWN = 42,
+
+  /**
+   * downThenLeft type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_DOWN_THEN_LEFT = 43,
+
+  /**
+ * downThenRight type
+ *
+ * @syscap SystemCapability.BarrierFree.Accessibility.Core
+ * @systemapi
+ * @since 20
+ */
+  TYPE_SWIPE_DOWN_THEN_RIGHT = 44,
+
+  /**
+   * downThenUp type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_SWIPE_DOWN_THEN_UP = 45,
+
+  /**
+   * twoFingerSingleTap type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_TWO_FINGER_SINGLE_TAP = 46,
+
+  /**
+   * twoFingerDoubleTap type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_TWO_FINGER_DOUBLE_TAP = 47,
+
+  /**
+   * twoFingerDoubleTapAndHold type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_TWO_FINGER_DOUBLE_TAP_AND_HOLD = 48,
+
+  /**
+ * twoFingerTripleTap type
+ *
+ * @syscap SystemCapability.BarrierFree.Accessibility.Core
+ * @systemapi
+ * @since 20
+ */
+  TYPE_TWO_FINGER_TRIPLE_TAP = 49,
+
+  /**
+   * twoFingerTripleTapAndHold type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_TWO_FINGER_TRIPLE_TAP_AND_HOLD = 50,
+
+  /**
+   * threeFingerSingleTap type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_THREE_FINGER_SINGLE_TAP = 51,
+
+  /**
+   * threeFingerDoubleTap type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_THREE_FINGER_DOUBLE_TAP = 52,
+
+  /**
+   * threeFingerDoubleTapAndHold type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_THREE_FINGER_DOUBLE_TAP_AND_HOLD = 53,
+
+  /**
+ * threeFingerTripleTap type
+ *
+ * @syscap SystemCapability.BarrierFree.Accessibility.Core
+ * @systemapi
+ * @since 20
+ */
+  TYPE_THREE_FINGER_TRIPLE_TAP = 54,
+
+  /**
+   * threeFingerTripleTapAndHold type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_THREE_FINGER_TRIPLE_TAP_AND_HOLD = 55,
+
+  /**
+   * fourFingerSingleTap type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_FOUR_FINGER_SINGLE_TAP = 56,
+
+  /**
+   * fourFingerDoubleTap type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_FOUR_FINGER_DOUBLE_TAP = 57,
+
+  /**
+   * fourFingerDoubleTapAndHold type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_FOUR_FINGER_DOUBLE_TAP_AND_HOLD = 58,
+
+  /**
+ * fourFingerTripleTap type
+ *
+ * @syscap SystemCapability.BarrierFree.Accessibility.Core
+ * @systemapi
+ * @since 20
+ */
+  TYPE_FOUR_FINGER_TRIPLE_TAP = 59,
+
+  /**
+   * fourFingerTripleTapAndHold type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_FOUR_FINGER_TRIPLE_TAP_AND_HOLD = 60,
+
+  /**
+   * threeFingerSwipeUp type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_THREE_FINGER_SWIPE_UP = 61,
+
+  /**
+   * threeFingerSwipeDown type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_THREE_FINGER_SWIPE_DOWN = 62,
+
+  /**
+   * threeFingerSwipeLeft type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_THREE_FINGER_SWIPE_LEFT = 63,
+
+  /**
+   * threeFingerSwipeRight type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_THREE_FINGER_SWIPE_RIGHT = 64,
+
+  /**
+   * fourFingerSwipeUp type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_FOUR_FINGER_SWIPE_UP = 65,
+
+  /**
+   * fourFingerSwipeDown type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_FOUR_FINGER_SWIPE_DOWN = 66,
+
+  /**
+ * fourFingerSwipeLeft type
+ *
+ * @syscap SystemCapability.BarrierFree.Accessibility.Core
+ * @systemapi
+ * @since 20
+ */
+  TYPE_FOUR_FINGER_SWIPE_LEFT = 67,
+
+  /**
+   * fourFingerSwipeRight type
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  TYPE_FOUR_FINGER_SWIPE_RIGHT = 68
 }
 
 /**
diff --git a/api/application/AccessibilityExtensionContext.d.ts b/api/application/AccessibilityExtensionContext.d.ts
index be448fd0baf36b46be7a0bdad85554acfdff040b..9cd0f1cb5d8c46ce6506f0282b9e6d0a1dd5dcee 100644
--- a/api/application/AccessibilityExtensionContext.d.ts
+++ b/api/application/AccessibilityExtensionContext.d.ts
@@ -127,7 +127,7 @@ export default class AccessibilityExtensionContext extends ExtensionContext {
   /**
    * Get window root element.
    *
-   * @param { number } windowId Indicates the window ID.
+   * @param { number } [windowId] Indicates the window ID.
    * @returns { Promise<AccessibilityElement> }
    * @throws { BusinessError } 401 - Input parameter error. Possible causes:
    *     1. Mandatory parameters are left unspecified;
@@ -361,6 +361,52 @@ export default class AccessibilityExtensionContext extends ExtensionContext {
    * @since 20
    */
   notifyDisconnect(): void;
+
+  /**
+   * Get accessibility focused element.
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @returns { Promise<AccessibilityElement> }
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @throws { BusinessError } 9300003 - No accessibility permission to perform the operation.
+   * @throws { BusinessError } 9300006 - The target application failed to connect to accessibility service.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  getAccessibilityFocusedElement(): Promise<AccessibilityElement>;
+
+  /**
+   * Get window root element.
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @param { number } [windowId] Indicates the window ID.
+   * @returns { Promise<AccessibilityElement> }
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @throws { BusinessError } 9300003 - No accessibility permission to perform the operation.
+   * @throws { BusinessError } 9300006 - The target application failed to connect to accessibility service.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  getRootInActiveWindow(windowId?: number): Promise<AccessibilityElement>;
+
+  /**
+   * Get window list.
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @param { number } [displayId] Indicates the display ID. If this parameter is not provided, indicates the default displayId.
+   * @returns { Array<AccessibilityElement> }
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @throws { BusinessError } 9300003 -  No accessibility permission to perform the operation.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  getAccessibilityWindowsSync(displayId?: number): Array<AccessibilityElement>;
 }
 
 /**
@@ -659,6 +705,1127 @@ declare interface AccessibilityElement {
    * @since 12
    */
   findElement(type: 'elementId', condition: number): Promise<AccessibilityElement>;
+
+  /**
+   * Indicates accessibility focus state.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  accessibilityFocused?: boolean;
+
+  /**
+   * Indicates the bundle name to which it belongs.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  bundleName?: string;
+
+  /**
+   * Indicates whether the element is checkable.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  checkable?: boolean;
+
+  /**
+   * Indicates whether the element is checked.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  checked?: boolean;
+
+  /**
+   * Indicates whether the element is clickable.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  clickable?: boolean;
+
+  /**
+   * Indicates the component ID to which the element belongs.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  componentId?: number;
+
+  /**
+   * Indicates the component type to which the element belongs.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  componentType?: string;
+
+  /**
+   * Indicates the content.
+   *
+   * @type { ?Array<string> }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  contents?: Array<string>;
+
+  /**
+   * Indicates the index of the current item.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  currentIndex?: number;
+
+  /**
+   * Indicates the description of the element.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  description?: string;
+
+  /**
+   * Indicates whether the element is editable.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  editable?: boolean;
+
+  /**
+   * Indicates the list index of the last item displayed on the screen.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  endIndex?: number;
+
+  /**
+   * Indicates the string of error state.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  error?: string;
+
+  /**
+   * Indicates whether the element is focusable.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  focusable?: boolean;
+
+  /**
+   * Indicates the hint text.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  hintText?: string;
+
+  /**
+   * Indicates the type of input text.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  inputType?: number;
+
+  /**
+   * Indicates the inspector key.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  inspectorKey?: string;
+
+  /**
+   * Indicates whether the element is active or not.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  isActive?: boolean;
+
+  /**
+   * Indicates whether the element is enable or not.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  isEnable?: boolean;
+
+  /**
+   * Indicates whether the element is hint state or not.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  isHint?: boolean;
+
+  /**
+   * Indicates whether the element is focused or not.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  isFocused?: boolean;
+
+  /**
+   * Indicates whether the element is password or not.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  isPassword?: boolean;
+
+  /**
+   * Indicates whether the element is visible or not.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  isVisible?: boolean;
+
+  /**
+   * Indicates the total count of the items.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  itemCount?: number;
+
+  /**
+   * Indicates the last content.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  lastContent?: string;
+
+  /**
+   * Indicates the display layer of the element.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  layer?: number;
+
+  /**
+   * Indicates whether the element is long clickable.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  longClickable?: boolean;
+
+  /**
+   * Indicates the page id.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  pageId?: number;
+
+  /**
+   * Indicates whether the element supports multiple lines of text.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  pluralLineSupported?: boolean;
+
+  /**
+   * Indicates the area of the element.
+   *
+   * @type { ?Rect }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  rect?: Rect;
+
+  /**
+   * Indicates the resource name of the element.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  resourceName?: string;
+
+  /**
+   * Indicates the display area of the element.
+   *
+   * @type { ?Rect }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  screenRect?: Rect;
+
+  /**
+   * Indicates whether the element is scrollable.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  scrollable?: boolean;
+
+  /**
+   * Indicates whether the element is selected.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  selected?: boolean;
+
+  /**
+   * Indicates the list index of the first item displayed on the screen.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  startIndex?: number;
+
+  /**
+   * Indicates the text of the element.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  text?: string;
+
+  /**
+   * Indicates the maximum length limit of the element text.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  textLengthLimit?: number;
+
+  /**
+   * Indicates the unit of movement of the element text as it is read.
+   *
+   * @type { ?accessibility.TextMoveUnit }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  textMoveUnit?: accessibility.TextMoveUnit;
+
+  /**
+   * Indicates the action that triggered the element event.
+   *
+   * @type { ?AccessibilityAction }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  triggerAction?: AccessibilityAction;
+
+  /**
+   * Indicates the window type of the element.
+   *
+   * @type { ?WindowType }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  type?: WindowType;
+
+  /**
+   * Indicates the maximum value.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  valueMax?: number;
+
+  /**
+   * Indicates the minimum value.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  valueMin?: number;
+
+  /**
+   * Indicates the current value.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  valueNow?: number;
+
+  /**
+   * Indicates the window id.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  windowId?: number;
+
+  /**
+   * Indicates the offset.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  offset?: number;
+
+  /**
+   * Indicates the text type.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  textType?: string;
+
+  /**
+   * Indicates the accessibility text of component.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  accessibilityText?: string;
+
+  /**
+   * Indicates the hot area of the element.
+   *
+   * @type { ?Rect }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  hotArea?: Rect;
+
+  /**
+   * Indicates the custom component type.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  customComponentType?: string;
+
+  /**
+   * Indicates the component next accessibility focus id.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  accessibilityNextFocusId?: number;
+
+  /**
+   * Indicates the component previous accessibility focus id.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  accessibilityPreviousFocusId?: number;
+
+  /**
+   * Indicates the extra info of the element.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  extraInfo?: string;
+
+  /**
+   * Indicates whether the element is scrollable for accessibility.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  accessibilityScrollable?: boolean;
+
+  /**
+   * Indicates actions the element support.
+   *
+   * @type { ?Array<string> }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  supportedActionNames?: Array<string>;
+
+  /**
+   * Indicates whether the element is accessibilityGroup.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  accessibilityGroup?: boolean;
+
+  /**
+   * Indicates the accessibilityLevel of component.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  accessibilityLevel?: string;
+
+  /**
+   * Indicates the navDestination id of component.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  navDestinationId?: number;
+
+  /**
+   * Indicates the current item in grid of component.
+   *
+   * @type { ?AccessibilityGrid }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  currentItem?: AccessibilityGrid;
+
+  /**
+   * Indicates the span array of component.
+   *
+   * @type { ?AccessibilitySpan[] }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  spans?: AccessibilitySpan[];
+
+  /**
+   * Indicates whether the component is accessibility visible.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  accessibilityVisible?: boolean;
+
+  /**
+   * Indicates the main windowId of component.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  mainWindowId?: number;
+
+  /**
+   * Indicates whether the component need clip.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  clip?: boolean;
+
+  /**
+   * Indicates the parent element id of component.
+   *
+   * @type { ?number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  parentId?: number;
+
+  /**
+   * Indicates the children elements id list of component.
+   *
+   * @type { ?Array<number> }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  childrenIds?: Array<number>;
+
+  /**
+   * Execute the specified action.
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @param { AccessibilityAction } action Indicates the action to execute.
+   * @param { Parameter } [parameters] Indicates the parameters needed to execute the action.
+   * @returns { Promise<void> }
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @throws { BusinessError } 9300005 - This action is not supported.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  executeAction(action: AccessibilityAction, parameters?: Parameter): Promise<void>;
+
+  /**
+   * Get element's parent.
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @returns { Promise<AccessibilityElement> }
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  getParent(): Promise<AccessibilityElement>;
+
+  /**
+   * Get element's children.
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @returns { Promise<Array<AccessibilityElement>> }
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  getChildren(): Promise<Array<AccessibilityElement>>;
+
+  /**
+ * Get element's root.
+ *
+ * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+ * @returns { Promise<AccessibilityElement> }
+ * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+ * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+ * @syscap SystemCapability.BarrierFree.Accessibility.Core
+ * @systemapi
+ * @since 20
+ */
+  getRoot(): Promise<AccessibilityElement>;
+
+  /**
+   * Find elements that match the condition.
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @param { string } condition Indicates the specific content to be queried.
+   * @returns { Promise<Array<AccessibilityElement>> }
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @throws { BusinessError } 9300006 - The target application failed to connect to accessibility service.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  findElementByContent(condition: string): Promise<Array<AccessibilityElement>>;
+
+  /**
+   * Find elements that match the focus direction.
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @param { FocusDirection } condition Indicates the direction of search focus to query.
+   * @returns { Promise<AccessibilityElement> }
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @throws { BusinessError } 9300006 - The target application failed to connect to accessibility service.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  findElementByFocusDirection(condition: FocusDirection): Promise<AccessibilityElement>;
+
+  /**
+   * Find elements that match the condition.
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @param { string } condition Indicates the specific json string to be queried.
+   * @returns { Promise<Array<AccessibilityElement>> }
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @throws { BusinessError } 9300006 - The target application failed to connect to accessibility service.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  findElementsByAccessibilityHintText(condition: string): Promise<Array<AccessibilityElement>>;
+
+  /**
+   * Find elements that match the elementId.
+   *
+   * @permission ohos.permission.ACCESSIBILITY_EXTENSION_ABILITY
+   * @param { number } condition Indicates the elementId to query.
+   * @returns { Promise<AccessibilityElement> }
+   * @throws { BusinessError } 201 - Permission verification failed.The application does not have the permission required to call the API.
+   * @throws { BusinessError } 202 - Permission verification failed. A non-system application calls a system API.
+   * @throws { BusinessError } 9300006 - The target application failed to connect to accessibility service.
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  findElementById(condition: number): Promise<AccessibilityElement>;
+}
+
+/**
+ * Accessibility action that the ability can execute.
+ *
+ * @enum { number }
+ * @syscap SystemCapability.BarrierFree.Accessibility.Core
+ * @systemapi
+ * @since 20
+ */
+export enum AccessibilityAction {
+  /**
+   * AccessibilityFocus
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  ACCESSIBILITY_FOCUS = 0,
+
+  /**
+   * ClearAccessibilityFocus
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  CLEAR_ACCESSIBILITY_FOCUS = 1,
+
+  /**
+   * Focus
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  FOCUS = 2,
+
+  /**
+   * ClearFocus
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  CLEAR_FOCUS = 3,
+
+  /**
+   * Click
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  CLICK = 4,
+
+  /**
+   * LongClick
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  LONG_CLICK = 5,
+
+  /**
+   * Cut
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  CUT = 6,
+
+  /**
+   * Copy
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  COPY = 7,
+
+  /**
+   * Paste
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  PASTE = 8,
+
+  /**
+   * Select
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  SELECT = 9,
+
+  /**
+   * SetText
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  SET_TEXT = 10,
+
+  /**
+   * ScrollForward
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  SCROLL_FORWARD = 11,
+
+  /**
+   * ScrollBackward
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  SCROLL_BACKWARD = 12,
+
+  /**
+   * SetSelection
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  SET_SELECTION = 13,
+
+  /**
+   * SetCursorPosition
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  SET_CURSOR_POSITION = 14,
+
+  /**
+   * Home
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  HOME = 15,
+
+  /**
+   * Back
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  BACK = 16,
+
+  /**
+   * RecentTask
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  RECENT_TASK = 17,
+
+  /**
+   * NotificationCenter
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  NOTIFICATION_CENTER = 18,
+
+  /**
+   * ControlCenter
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  CONTROL_CENTER = 19,
+
+  /**
+   * Common
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  COMMON = 20,
+
+  /**
+   * SpanClick
+   *
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  SPAN_CLICK = 21
+}
+
+/**
+ * Indicates grid info.
+ *
+ * @typedef AccessibilityGrid
+ * @syscap SystemCapability.BarrierFree.Accessibility.Core
+ * @systemapi
+ * @since 20
+ */
+interface AccessibilityGrid {
+  /**
+   * The row index in grid.
+   *
+   * @type { number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  rowIndex: number;
+  /**
+   * The colum index in grid.
+   *
+   * @type { number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  columnIndex: number;
+}
+
+/**
+ * Indicates span info.
+ *
+ * @typedef AccessibilitySpan
+ * @syscap SystemCapability.BarrierFree.Accessibility.Core
+ * @systemapi
+ * @since 20
+ */
+interface AccessibilitySpan {
+  /**
+   * The id of span.
+   *
+   * @type { number }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  spanId: number;
+  /**
+   * The text of span.
+   *
+   * @type { string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  spanText: string;
+  /**
+   * The accessibility text of span.
+   *
+   * @type { string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  accessibilityText: string;
+  /**
+   * The accessibility description of span.
+   *
+   * @type { string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  accessibilityDescription: string;
+  /**
+   * The accessibility level of span.
+   *
+   * @type { string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  accessibilityLevel: string;
+}
+
+/**
+ * Indicates the parameter of the AccessibiltyAction.
+ *
+ * @syscap SystemCapability.BarrierFree.Accessibility.Core
+ * @systemapi
+ * @since 20
+ */
+export declare class Parameter {
+  /**
+   * Indicates the text to set for AccessibilityAction.SET_TEXT.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  setText?: string;
+  /**
+   * Indicates the begin position of select text  for AccessibilityAction.SET_SELECTION.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  selectTextBegin?: string;
+  /**
+   * Indicates the end position of select text for AccessibilityAction.SET_SELECTION.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  selectTextEnd?: string;
+  /**
+   * Indicates the direction of select text for AccessibilityAction.SET_SELECTION.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  selectTextInForWard?: boolean;
+  /**
+   * Indicates the cursor position for AccessibilityAction.SET_CURSOR_POSITION.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  offset?: string;
+  /**
+   * Indicates the span id for AccessibilityAction.SPAN_CLICK.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  spanId?: string;
+  /**
+   * Indicates the scroll type for AccessibilityAction.SCROLL_FORWARD and AccessibilityAction.SCROLL_BACKWARD.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.BarrierFree.Accessibility.Core
+   * @systemapi
+   * @since 20
+   */
+  scrollType?: string;
 }
 
 /**
diff --git a/kits/@kit.AccessibilityKit.d.ts b/kits/@kit.AccessibilityKit.d.ts
index 8e7cac8fc6c03f88fdc78bdfe1de27006781ba48..e40ad63bed2abc7a3213d7a0a6347f6bae2c6edb 100644
--- a/kits/@kit.AccessibilityKit.d.ts
+++ b/kits/@kit.AccessibilityKit.d.ts
@@ -24,11 +24,11 @@ import { GesturePath } from '@ohos.accessibility.GesturePath';
 import { GesturePoint } from '@ohos.accessibility.GesturePoint';
 import AccessibilityExtensionAbility, {
   AccessibilityElement, AccessibilityExtensionContext, ElementAttributeKeys,
-  ElementAttributeValues, FocusDirection, FocusType, Rect, WindowType, AccessibilityEvent
+  ElementAttributeValues, FocusDirection, FocusType, Rect, WindowType, AccessibilityEvent, AccessibilityEventInfo
 } from '@ohos.application.AccessibilityExtensionAbility';
 
 export {
   AccessibilityElement, AccessibilityExtensionAbility, AccessibilityExtensionContext,
   ElementAttributeKeys, ElementAttributeValues, FocusDirection, FocusType, GesturePath,
-  GesturePoint, Rect, WindowType, accessibility, config, AccessibilityEvent
+  GesturePoint, Rect, WindowType, accessibility, config, AccessibilityEvent, AccessibilityEventInfo
 };