diff --git a/api/@ohos.multimedia.avsession.d.ts b/api/@ohos.multimedia.avsession.d.ts
index 7e95671d23a39548f79db472fb13d1793c6728fc..d306c0147daa29c76014e1ba727e1171aacd4e6b 100644
--- a/api/@ohos.multimedia.avsession.d.ts
+++ b/api/@ohos.multimedia.avsession.d.ts
@@ -3943,6 +3943,18 @@ declare namespace avSession {
      */
     select(options?: AVCastPickerOptions): Promise<void>;
 
+    /**
+     * Restore default communication audio output device.
+     * For example, the audio output device will be switched to earpiece for voice call scene and
+     * to speaker for video call scene on phone.
+     *
+     * @returns { Promise<void> } void promise when executed successfully
+     * @syscap SystemCapability.Multimedia.AVSession.AVCast
+     * @atomicservice
+     * @since 21
+     */
+    restoreDefaultCommunicationDevice(): Promise<void>;
+
     /**
      * Register picker state change callback.
      * @param { 'pickerStateChange' } type - 'pickerStateChange'