diff --git a/multimedia/player_framework/lowpower_audio_sink.h b/multimedia/player_framework/lowpower_audio_sink.h
index 07f24a2999867ed323462567a676035cdcf3d874..226f1f17a292d73a00748310e0e39cfe76eb7c09 100644
--- a/multimedia/player_framework/lowpower_audio_sink.h
+++ b/multimedia/player_framework/lowpower_audio_sink.h
@@ -258,20 +258,6 @@ OH_AVErrCode OH_LowPowerAudioSink_SetPlaybackSpeed(OH_LowPowerAudioSink* sink, c
  */
 OH_AVErrCode OH_LowPowerAudioSink_ReturnSamples(OH_LowPowerAudioSink* sink, OH_AVSamplesBuffer* samples);
 
-/**
- * @brief Set the loudness gain for lowpower audio sink.
- *
- * @param {OH_LowPowerAudioSink*} sink Pointer to an OH_LowPowerAudioSink instance.
- * @param {float} loudnessGain Loudness gain to set which changes from -90.0 to 24.0, expressing in dB.
- * The default loudness gain is 0.0dB.
- * @return Returns AV_ERR_OK if the gain is set successfully;
- * otherwise, returns a specific error code as defined in {@link OH_AVErrCode}
- * {@link AV_ERR_INVALID_VAL} the sink is nullptr or loudnessGain is out of valid range.
- * {@link AV_ERR_SERVICE_DIED} media service is died.
- * @since 20
- */
-OH_AVErrCode OH_LowPowerAudioSink_SetLoudnessGain(OH_LowPowerAudioSink* sink, float loudnessGain);
-
 /**
  * @brief Regsister callback instance for lowpower audio sink.
  *
diff --git a/multimedia/player_framework/lowpower_avsink/liblowpower_avsink.ndk.json b/multimedia/player_framework/lowpower_avsink/liblowpower_avsink.ndk.json
index 7e53713e491574d739dd5d83c218d7ebb6cf50de..079f642c5fbba140774dd4334ba23d0c1600210b 100644
--- a/multimedia/player_framework/lowpower_avsink/liblowpower_avsink.ndk.json
+++ b/multimedia/player_framework/lowpower_avsink/liblowpower_avsink.ndk.json
@@ -67,10 +67,6 @@
     "first_introduced": "20",
     "name": "OH_LowPowerAudioSink_ReturnSamples"
   },
-  {
-    "first_introduced": "20",
-    "name": "OH_LowPowerAudioSink_SetLoudnessGain"
-  },
   {
     "first_introduced": "20",
     "name": "OH_LowPowerAudioSink_RegisterCallback"