diff --git a/api/@ohos.power.d.ts b/api/@ohos.power.d.ts
index fbafb0b9dcbe67a91aa9f275ac02a9905e095af4..901dcd8fef6c223002ef2937e226ce27360a2358 100644
--- a/api/@ohos.power.d.ts
+++ b/api/@ohos.power.d.ts
@@ -307,6 +307,21 @@ declare namespace power {
    */
   function refreshActivity(reason: string): void;
 
+  /**
+   * Set the power key filtering strategy. For details, see {@link PowerKeyFilteringStrategy}.
+   * @permission ohos.permission.POWER_MANAGER
+   * @param { PowerKeyFilteringStrategy } strategy Indicates the power key filtering strategy {@link PowerKeyFilteringStrategy} to set.
+   * the PowerKeyFilteringStrategy type is an enumeration class.
+   * @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 } 4900101 - Failed to connect to the service.
+   * @syscap SystemCapability.PowerManager.PowerManager.Core
+   * @systemapi
+   * @since 21
+   */
+  function setPowerKeyFilteringStrategy(strategy: PowerKeyFilteringStrategy): void;
+  
   /**
    * Power mode of a device.
    *
@@ -356,5 +371,29 @@ declare namespace power {
      */
     MODE_CUSTOM_POWER_SAVE = 650
   }
+
+  /**
+   * Filtering strategy of power key.
+   *
+   * @enum { int }
+   * @syscap SystemCapability.PowerManager.PowerManager.Core
+   * @since 21
+   */
+  export enum PowerKeyFilteringStrategy {
+    /**
+     * Disable long press filtering.
+     *
+     * @syscap SystemCapability.PowerManager.PowerManager.Core
+     * @since 21
+     */
+    DISABLE_LONG_PRESS_FILTERING = 0,
+    /**
+     * Long press filtering once.
+     *
+     * @syscap SystemCapability.PowerManager.PowerManager.Core
+     * @since 21
+     */
+    LONG_PRESS_FILTERING_ONCE = 1
+  }
 }
 export default power;
\ No newline at end of file