diff --git a/api/@ohos.app.ability.DriverExtensionAbility.d.ts b/api/@ohos.app.ability.DriverExtensionAbility.d.ts
index e2573372ec5691c21f44fe38eaeb4bfc434e5924..3347935ecc286123a7c44d5aa70090713c66d8a3 100644
--- a/api/@ohos.app.ability.DriverExtensionAbility.d.ts
+++ b/api/@ohos.app.ability.DriverExtensionAbility.d.ts
@@ -27,7 +27,8 @@ import _DriverExtensionContext from './application/DriverExtensionContext';
  *
  * @typedef { _DriverExtensionContext }
  * @syscap SystemCapability.Driver.ExternalDevice
- * @since 10
+ * @since arkts {'1.1':'10', '1.2':'20'}
+ * @arkts 1.1&1.2
  */
 export type DriverExtensionContext = _DriverExtensionContext;
 
@@ -35,16 +36,18 @@ export type DriverExtensionContext = _DriverExtensionContext;
  * class of driver extension ability.
  * @syscap SystemCapability.Driver.ExternalDevice
  * @StageModelOnly
- * @since 10
+ * @since arkts {'1.1':'10', '1.2':'20'}
+ * @arkts 1.1&1.2
  */
-export default class DriverExtensionAbility {
+declare class DriverExtensionAbility {
   /**
    * Indicates driver extension ability context.
    * 
    * @type { DriverExtensionContext }
    * @syscap SystemCapability.Driver.ExternalDevice
    * @StageModelOnly
-   * @since 10
+   * @since arkts {'1.1':'10', '1.2':'20'}
+   * @arkts 1.1&1.2
    */
   context: DriverExtensionContext;
 
@@ -53,7 +56,8 @@ export default class DriverExtensionAbility {
    * @param { Want } want - Indicates the want of created driver extension.
    * @syscap SystemCapability.Driver.ExternalDevice
    * @StageModelOnly
-   * @since 10
+   * @since arkts {'1.1':'10', '1.2':'20'}
+   * @arkts 1.1&1.2
    */
   onInit(want: Want): void;
 
@@ -61,7 +65,8 @@ export default class DriverExtensionAbility {
    * Called back before a driver extension is destroyed.
    * @syscap SystemCapability.Driver.ExternalDevice
    * @StageModelOnly
-   * @since 10
+   * @since arkts {'1.1':'10', '1.2':'20'}
+   * @arkts 1.1&1.2
    */
   onRelease(): void;
 
@@ -71,7 +76,8 @@ export default class DriverExtensionAbility {
    * @returns { rpc.RemoteObject | Promise<rpc.RemoteObject> } Rpc remoteObject.
    * @syscap SystemCapability.Driver.ExternalDevice
    * @StageModelOnly
-   * @since 10
+   * @since arkts {'1.1':'10', '1.2':'20'}
+   * @arkts 1.1&1.2
    */
   onConnect(want: Want): rpc.RemoteObject | Promise<rpc.RemoteObject>;
 
@@ -85,6 +91,17 @@ export default class DriverExtensionAbility {
    */
   onDisconnect(want: Want): void | Promise<void>;
 
+  /**
+   * Called back when all abilities connected to a driver extension are disconnected.
+   * @param { Want } want - Indicates disconnection information about the driver extension.
+   * @returns { undefined | Promise<void> }
+   * @syscap SystemCapability.Driver.ExternalDevice
+   * @StageModelOnly
+   * @since 20
+   * @arkts 1.2
+   */
+  onDisconnect(want: Want): undefined | Promise<void>;
+
   /**
    * Called when dump client information is required.
    * It is recommended that developers don't DUMP sensitive information.
@@ -92,7 +109,17 @@ export default class DriverExtensionAbility {
    * @returns { Array<string> } The dump info array.
    * @syscap SystemCapability.Driver.ExternalDevice
    * @StageModelOnly
-   * @since 10
+   * @since arkts {'1.1':'10', '1.2':'20'}
+   * @arkts 1.1&1.2
    */
   onDump(params: Array<string>): Array<string>;
 }
+
+/**
+ * class of driver extension ability.
+ * @syscap SystemCapability.Driver.ExternalDevice
+ * @StageModelOnly
+ * @since arkts {'1.1':'10', '1.2':'20'}
+ * @arkts 1.1&1.2
+ */
+export default DriverExtensionAbility;
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