diff --git a/api/@ohos.ability.particleAbility.d.ts b/api/@ohos.ability.particleAbility.d.ts
index 74ff1629758d38c4ca40797e4f2dc5c3cf0149ee..5c8a142e5625178c802f323f9039ac520f80aa30 100644
--- a/api/@ohos.ability.particleAbility.d.ts
+++ b/api/@ohos.ability.particleAbility.d.ts
@@ -16,6 +16,7 @@
 import { AsyncCallback } from './basic';
 import { StartAbilityParameter } from './ability/startAbilityParameter';
 import { DataAbilityHelper } from './ability/dataAbilityHelper';
+import { NotificationRequest } from './notification/notificationRequest';
 
 /**
  * A Particle Ability represents an ability with service.
@@ -59,5 +60,30 @@ declare namespace particleAbility {
    * @return Returns the dataAbilityHelper.
    */
   function acquireDataAbilityHelper(uri: string): DataAbilityHelper;
+
+  /**
+   * Keep this Service ability in the background and display a notification bar.
+   *
+   * @since 7
+   * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+   * @permission ohos.permission.KEEP_BACKGROUND_RUNNING
+   * @param id Identifies the notification bar information.
+   * @param request Indicates the notificationRequest instance containing information for displaying a notification bar.
+   * @FAModelOnly
+   * @deprecated
+   */
+  function startBackgroundRunning(id: number, request: NotificationRequest, callback: AsyncCallback<void>): void;
+  function startBackgroundRunning(id: number, request: NotificationRequest): Promise<void>;
+
+  /**
+   * Cancel background running of this ability to free up system memory.
+   *
+   * @since 7
+   * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+   * @FAModelOnly
+   * @deprecated
+   */
+  function cancelBackgroundRunning(callback: AsyncCallback<void>): void;
+  function cancelBackgroundRunning(): Promise<void>;
 }
 export default particleAbility;
diff --git a/api/@ohos.backgroundTaskManager.d.ts b/api/@ohos.backgroundTaskManager.d.ts
index 85bd32ad33e3ee19b783488db1622757c543a006..7a2dabdfaafcbae93b79aa81647168a9893b550e 100644
--- a/api/@ohos.backgroundTaskManager.d.ts
+++ b/api/@ohos.backgroundTaskManager.d.ts
@@ -14,6 +14,8 @@
  */
 
 import { AsyncCallback , Callback} from './basic';
+import { WantAgent } from "./@ohos.wantAgent";
+import { Context } from './app/context';
 
 /**
  * Manages background tasks.
@@ -75,6 +77,113 @@ declare namespace backgroundTaskManager {
      * @return Info of delay request
      */
     function requestSuspendDelay(reason: string, callback: Callback<void>): DelaySuspendInfo;
+
+    /**
+     * Service ability uses this method to request start running in background.
+     * system will publish a notification related to the this service.
+     *
+     * @since 8
+     * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+     * @permission ohos.permission.KEEP_BACKGROUND_RUNNING
+     * @param context app running context.
+     * @param bgMode Indicates which background mode to request.
+     * @param wantAgent Indicates which ability to start when user click the notification bar.
+     */
+    function startBackgroundRunning(context: Context, bgMode: BackgroundMode, wantAgent: WantAgent, callback: AsyncCallback<void>): void;
+    function startBackgroundRunning(context: Context, bgMode: BackgroundMode, wantAgent: WantAgent): Promise<void>;
+
+    /**
+     * Service ability uses this method to request stop running in background.
+     *
+     * @since 8
+     * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+     * @param context app running context.
+     */
+    function stopBackgroundRunning(context: Context, callback: AsyncCallback<void>): void;
+    function stopBackgroundRunning(context: Context): Promise<void>;
+
+    /**
+     * supported background mode.
+     *
+     * @since 8
+     * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+     */
+    export enum BackgroundMode {
+        /**
+         * data transfer mode
+         *
+         * @since 8
+         * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+         */
+        DATA_TRANSFER = 1,
+
+        /**
+         * audio playback mode
+         *
+         * @since 8
+         * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+         */
+        AUDIO_PLAYBACK = 2,
+
+        /**
+         * audio recording mode
+         *
+         * @since 8
+         * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+         */
+        AUDIO_RECORDING = 3,
+
+        /**
+         * location mode
+         *
+         * @since 8
+         * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+         */
+        LOCATION = 4,
+
+        /**
+         * bluetooth interaction mode
+         *
+         * @since 8
+         * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+         */
+        BLUETOOTH_INTERACTION = 5,
+
+        /**
+         * multi-device connection mode
+         *
+         * @since 8
+         * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+         */
+        MULTI_DEVICE_CONNECTION = 6,
+
+        /**
+         * wifi interaction mode
+         *
+         * @since 8
+         * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+         * @systemapi Hide this for inner system use.
+         */
+        WIFI_INTERACTION = 7,
+
+        /**
+         * Voice over Internet Phone mode
+         *
+         * @since 8
+         * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+         * @systemapi Hide this for inner system use.
+         */
+        VOIP = 8,
+
+        /**
+         * background continuous calculate mode, for example 3D render.
+         * only supported in portable computer device
+         *
+         * @since 8
+         * @syscap SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
+         */
+        TASK_KEEPING = 9,
+    }
 }
 
 export default backgroundTaskManager;
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