diff --git a/frameworks/native/capi/player/native_avplayer.cpp b/frameworks/native/capi/player/native_avplayer.cpp
index bb7f45519481662a254d666a9456f0593d0ce721..4ade9ba7c91191c0ec8ed9787fe7518625631b6e 100644
--- a/frameworks/native/capi/player/native_avplayer.cpp
+++ b/frameworks/native/capi/player/native_avplayer.cpp
@@ -269,6 +269,43 @@ private:
     Player_MediaKeySystemInfoCallback drmsysteminfocallback_ = nullptr;
 };
 
+class NativeAVDataSource : public OHOS::Media::IMediaDataSource {
+public:
+    NativeAVDataSource(OH_AVDataSourceExt* dataSourceExt, void* userData)
+        : dataSourceExt_(dataSourceExt), userData_(userData) {}
+    
+    virtual ~NativeAVDataSource() = default;
+
+    int32_t ReadAt(const std::shared_ptr<AVSharedMemory> &mem, uint32_t length, int64_t pos = -1)
+    {
+        std::shared_ptr<AVBuffer> buffer = AVBuffer::CreateAVBuffer(
+            mem->GetBase(), mem->GetSize(), mem->GetSize()
+        );
+        OH_AVBuffer avBuffer(buffer);
+        return dataSourceExt_->readAt(&avBuffer, length, pos, userData_);
+    }
+
+    int32_t GetSize(int64_t &size)
+    {
+        size = dataSourceExt_->size;
+        return 0;
+    }
+
+    int32_t ReadAt(int64_t pos, uint32_t length, const std::shared_ptr<AVSharedMemory> &mem)
+    {
+        return ReadAt(mem, length, pos);
+    }
+
+    int32_t ReadAt(uint32_t length, const std::shared_ptr<AVSharedMemory> &mem)
+    {
+        return ReadAt(mem, length);
+    }
+
+private:
+    OH_AVDataSourceExt* dataSourceExt_ = nullptr;
+    void* userData_ = nullptr;
+};
+
 void PlayerObject::StartListenCurrentResource()
 {
     if (callback_ != nullptr) {
@@ -1425,4 +1462,18 @@ OH_AVErrCode OH_AVPlayer_SetLoudnessGain(OH_AVPlayer *player, float loudnessGain
     int32_t ret = playerObj->player_->SetLoudnessGain(loudnessGain);
     CHECK_AND_RETURN_RET_LOG(ret == MSERR_OK, AV_ERR_INVALID_STATE, "player SetLoudnessGain failed");
     return AV_ERR_OK;
+}
+
+OH_AVErrCode OH_AVPlayer_SetDataSource(OH_AVPlayer *player, OH_AVDataSourceExt* datasrc, void* userData)
+{
+    CHECK_AND_RETURN_RET_LOG(player != nullptr, AV_ERR_INVALID_VAL, "input player is nullptr!");
+    struct PlayerObject *playerObj = reinterpret_cast<PlayerObject *>(player);
+    CHECK_AND_RETURN_RET_LOG(playerObj->player_ != nullptr, AV_ERR_INVALID_VAL, "player_ is null");
+    CHECK_AND_RETURN_RET_LOG(datasrc != nullptr, AV_ERR_INVALID_VAL, "datasrc is null");
+    CHECK_AND_RETURN_RET_LOG(datasrc->readAt != nullptr, AV_ERR_INVALID_VAL, "datasrc readAt is null");
+    playerObj->StartListenCurrentResource();
+    std::shared_ptr<IMediaDataSource> avDataSource = std::make_shared<NativeAVDataSource>(datasrc, userData);
+    int32_t ret = playerObj->player_->SetSource(avDataSource);
+    CHECK_AND_RETURN_RET_LOG(ret == MSERR_OK, AV_ERR_INVALID_VAL, "player setDataSource failed");
+    return AV_ERR_OK;
 }
\ No newline at end of file
diff --git a/interfaces/kits/c/avplayer.h b/interfaces/kits/c/avplayer.h
index f4f5413781ad5b00e20e6d3b5691b12668033848..0f3ec8947bda8c318854dfcae58db311aacfa8fb 100644
--- a/interfaces/kits/c/avplayer.h
+++ b/interfaces/kits/c/avplayer.h
@@ -44,6 +44,7 @@
 #include "native_averrors.h"
 #include "avplayer_base.h"
 #include "native_audiostream_base.h"
+#include "native_avcodec_base.h"
 
 
 #ifdef __cplusplus
@@ -588,6 +589,18 @@ OH_AVErrCode OH_AVPlayer_SetOnErrorCallback(OH_AVPlayer *player, OH_AVPlayerOnEr
  */
 OH_AVErrCode OH_AVPlayer_SetLoudnessGain(OH_AVPlayer *player, float loudnessGain);
 
+/**
+ * @brief Set the media source of the player. The data of this media source is provided by the application.
+ * @param {OH_AVPlayer*} player Pointer to an OH_AVPlayer instance
+ * @param {OH_AVDataSourceExt*} datasrc Pointer to an OH_AVDataSourceExt instance
+ * @param {void*} userData The handle passed in by the user is used to pass in the callback
+ * @return Function result code.
+ *         {@link AV_ERR_OK} if the execution is successful.
+ *         {@link AV_ERR_INVALID_VAL} if input player is nullptr or player setDataSource failed.
+ * @since 21
+ */
+OH_AVErrCode OH_AVPlayer_SetDataSource(OH_AVPlayer *player, OH_AVDataSourceExt* datasrc, void* userData);
+
 #ifdef __cplusplus
 }
 #endif