diff --git a/api/@ohos.multimedia.audio.d.ts b/api/@ohos.multimedia.audio.d.ts
index 62ec8b3b16e9eacd53d7c16127c612d54bbc8f19..9db2d58bae3f933833d0ab26748c287a1a9c5199 100644
--- a/api/@ohos.multimedia.audio.d.ts
+++ b/api/@ohos.multimedia.audio.d.ts
@@ -4688,6 +4688,38 @@ declare namespace audio {
      */
     setAppVolumePercentage(volume: number): Promise<void>;
 
+    /**
+     * Sets the volume for a stream. This method uses a promise to return the result.
+     * @permission ohos.permission.ACCESS_NOTIFICATION_POLICY
+     * @param { AudioVolumeType } volumeType - Audio stream type.
+     * @param { number } volume - Volume to set. The value range can be obtained by calling getMinVolume and getMaxVolume.
+     * @param { number } callingUid - Uid of the stream owner.
+     * @returns { Promise<void> } Promise used to return the result.
+     * @throws { BusinessError } 201 - Permission denied.
+     * @throws { BusinessError } 202 - Not system App.
+     * @throws { BusinessError } 6800101 - Parameter verification failed.
+     * @throws { BusinessError } 6800301 - Crash or blocking occurs in system process.
+     * @syscap SystemCapability.Multimedia.Audio.Volume
+     * @systemapi
+     * @since 20
+     */
+    setSystemVolumeForUid(volumeType: AudioVolumeType, volume: number, callingUid: number): Promise<void>;
+
+    /**
+     * Obtains the volume of a stream.
+     * @param { AudioVolumeType } volumeType - Audio stream type.
+     * @param { number } callingUid - Uid of the stream owner.
+     * @returns { number } Current system volume level.
+     * @throws { BusinessError } 201 - Permission denied.
+     * @throws { BusinessError } 202 - Not system App.
+     * @throws { BusinessError } 6800101 - Parameter verification failed.
+     * @throws { BusinessError } 6800301 - Crash or blocking occurs in system process.
+     * @syscap SystemCapability.Multimedia.Audio.Volume
+     * @systemapi
+     * @since 20
+     */
+    getSystemVolumeForUid(volumeType: AudioVolumeType, callingUid: number): number;
+
     /**
      * Listens for system volume change events. This method uses a callback to get volume change events.
      * @param { 'volumeChange' } type - Type of the event to listen for. Only the volumeChange event is supported.