diff --git a/multimedia/av_codec/native_avcodec_audiocodec.h b/multimedia/av_codec/native_avcodec_audiocodec.h
index 4c6831580..8ae03c4bb 100644
--- a/multimedia/av_codec/native_avcodec_audiocodec.h
+++ b/multimedia/av_codec/native_avcodec_audiocodec.h
@@ -279,6 +279,7 @@ OH_AVErrCode OH_AudioCodec_IsValid(OH_AVCodec *codec, bool *isValid);
  *         {@link AV_ERR_INVALID_VAL} 3 - If the codec instance is nullptr or invalid,
  *         the mediaKeySession is nullptr or invalid.
  *         {@link AV_ERR_INVALID_STATE} 8 - If the codec service is invalid.
+ *         {@link AV_ERR_NO_MEMORY}, failed to request memory.
  * @since 12
  * @version 1.0
 */
diff --git a/multimedia/av_codec/native_avcodec_videodecoder.h b/multimedia/av_codec/native_avcodec_videodecoder.h
index c52df2c28..012329d4f 100644
--- a/multimedia/av_codec/native_avcodec_videodecoder.h
+++ b/multimedia/av_codec/native_avcodec_videodecoder.h
@@ -343,6 +343,8 @@ OH_AVErrCode OH_VideoDecoder_FreeOutputData(OH_AVCodec *codec, uint32_t index);
  * {@link AV_ERR_UNKNOWN}, unknown error.
  * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
  * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
+ * {@link AV_ERR_DRM_DECRYPT_FAILED}, the drm-protected video buffer is decrypted failed,
+ * it is recommended to check the logs.
  * @since 11
  */
 OH_AVErrCode OH_VideoDecoder_PushInputBuffer(OH_AVCodec *codec, uint32_t index);
@@ -442,6 +444,7 @@ OH_AVErrCode OH_VideoDecoder_IsValid(OH_AVCodec *codec, bool *isValid);
  * @return {@link AV_ERR_OK} 0 - Success
  *         {@link AV_ERR_OPERATE_NOT_PERMIT} 2 - If the codec service or the media key session
  *         service is in wrong status.
+ *         {@link AV_ERR_NO_MEMORY}, instance has already released or no memory.
  *         {@link AV_ERR_INVALID_VAL} 3 - If the codec instance is nullptr or invalid,
  *         the mediaKeySession is nullptr or invalid.
  * @since 11
diff --git a/multimedia/av_codec/native_avdemuxer.h b/multimedia/av_codec/native_avdemuxer.h
index 7b2117ebc..7db7dec7e 100644
--- a/multimedia/av_codec/native_avdemuxer.h
+++ b/multimedia/av_codec/native_avdemuxer.h
@@ -210,6 +210,7 @@ OH_AVErrCode OH_AVDemuxer_SetDemuxerMediaKeySystemInfoCallback(OH_AVDemuxer *dem
  * @param mediaKeySystemInfo Indicates the media key system info which ram space allocated by callee and
  * released by caller.
  * @return {@link AV_ERR_OK} 0 - Success
+ *         {@link AV_ERR_OPERATE_NOT_PERMIT} 2 - If the demuxer engine is not inited or init failed.
  *         {@link AV_ERR_INVALID_VAL} 3 - If the demuxer instance is nullptr or invalid
  *          or the mediaKeySystemInfo is nullptr.
  * @since 11
diff --git a/multimedia/drm_framework/native_mediakeysystem.h b/multimedia/drm_framework/native_mediakeysystem.h
index 2a818346b..966948a64 100644
--- a/multimedia/drm_framework/native_mediakeysystem.h
+++ b/multimedia/drm_framework/native_mediakeysystem.h
@@ -135,8 +135,6 @@ bool OH_MediaKeySystem_IsSupported3(const char *name, const char *mimeType,
  * @brief Creates a media key system instance from the name.
  * @param name Secifies which drm system will be created by name.
  * @param mediaKeySystem Media key system instance.
- * @return DRM_ERR_INVALID_VAL when the params checked failure, return DRM_ERR_OK when function called successfully,
- * return DRM_ERR_MAX_SYSTEM_NUM_REACHED when max num media key system reached.
  * @return {@link DRM_ERR_OK} 0 - Success.
  *         {@link DRM_ERR_INVALID_VAL} 24700503 - Probably caused by:
  *         1. the name is nullptr or the length of name is zero.
@@ -155,6 +153,7 @@ Drm_ErrCode OH_MediaKeySystem_Create(const char *name, MediaKeySystem **mediaKey
  * @param value Configuration vaule string to be set.
  * @return {@link DRM_ERR_OK} 0 - Success.
  *         {@link DRM_ERR_INVALID_VAL} 24700503 - The parameter passed in is a null pointer or invalid.
+ *         {@link DRM_ERR_UNKNOWN} 24700506 - Internal error occurred, it is recommended to check the logs.
  * @since 11
  * @version 1.0
  */
@@ -358,7 +357,6 @@ Drm_ErrCode OH_MediaKeySystem_GetCertificateStatus(MediaKeySystem *mediaKeySyste
  */
 Drm_ErrCode OH_MediaKeySystem_Destroy(MediaKeySystem *mediaKeySystem);
 
-
 #ifdef __cplusplus
 }
 #endif