diff --git a/multimedia/audio_framework/audio_renderer/native_audiorenderer.h b/multimedia/audio_framework/audio_renderer/native_audiorenderer.h
index a2b5dff7d94bb3a890bc911f763c0e16a4f5682d..f3dd68f123215fd36d373bd28b8e799d94bf4b58 100644
--- a/multimedia/audio_framework/audio_renderer/native_audiorenderer.h
+++ b/multimedia/audio_framework/audio_renderer/native_audiorenderer.h
@@ -599,6 +599,39 @@ typedef void (*OH_AudioRenderer_OnFastStatusChange)(
     OH_AudioStream_FastStatus status
 );
 
+/**
+ * @brief Sets the loudness gain of current renderer.
+ * The default loudness gain is 0.0dB. The stream usage of the audio renderer must be
+ * {@link OH_AudioStream_Usage#AUDIOSTREAM_USAGE_MUSIC}, {@link OH_AudioStream_Usage#AUDIOSTREAM_USAGE_MOVIE}
+ * or {@link OH_AudioStream_Usage#AUDIOSTREAM_USAGE_AUDIOBOOK}.
+ * The latency mode of the audio renderer must be {@link OH_AudioStream_LatencyMode#AUDIOSTREAM_LATENCY_MODE_NORMAL}.
+ * If AudioRenderer is played through the high-resolution pipe, this operation is not supported.
+ *
+ * @param renderer AudioRender created by OH_AudioStreamBuilder_GenerateRenderer()
+ * @param loudnessGain Loudness gain to set which changes from -90.0 to 24.0, expressing in dB.
+ * @return Function result code:
+ *         {@link AUDIOSTREAM_SUCCESS} If the execution is successful.
+ *         {@link AUDIOSTREAM_ERROR_INVALID_PARAM}:
+ *                                                 1.The param of renderer is nullptr or not supported to set gain;
+ *                                                 2.The param of loudnessGain is invalid.
+ * @since 20
+ */
+OH_AudioStream_Result OH_AudioRenderer_SetLoudnessGain(OH_AudioRenderer* renderer, float loudnessGain);
+
+/**
+ * @brief Get the loudness gain of current renderer.
+ *
+ * @param renderer AudioRender created by OH_AudioStreamBuilder_GenerateRenderer()
+ * @param loudnessGain Pointer to a variable to receive the loudness gain.
+ * @return Function result code:
+ *         {@link AUDIOSTREAM_SUCCESS} If the execution is successful.
+ *         {@link AUDIOSTREAM_ERROR_INVALID_PARAM}:
+ *                                                 1.The param of renderer is nullptr;
+ *                                                 2.The param of loudnessGain is nullptr.
+ * @since 20
+ */
+OH_AudioStream_Result OH_AudioRenderer_GetLoudnessGain(OH_AudioRenderer* renderer, float* loudnessGain);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/multimedia/audio_framework/ohaudio.ndk.json b/multimedia/audio_framework/ohaudio.ndk.json
index 73e3be08e86836e8e8812bff4ed8b606c5574574..d619281dbd77603ffc73da0083b01ad2a822e4f8 100644
--- a/multimedia/audio_framework/ohaudio.ndk.json
+++ b/multimedia/audio_framework/ohaudio.ndk.json
@@ -498,5 +498,13 @@
     {
         "first_introduced": "20",
         "name": "OH_AudioStreamBuilder_SetCapturerFastStatusChangeCallback"
+    },
+    {
+        "first_introduced": "20",
+        "name": "OH_AudioRenderer_SetLoudnessGain"
+    },
+    {
+        "first_introduced": "20",
+        "name": "OH_AudioRenderer_GetLoudnessGain"
     }
 ]