diff --git a/api/include/mk_recorder.h b/api/include/mk_recorder.h
index effd77e7..7419fce3 100644
--- a/api/include/mk_recorder.h
+++ b/api/include/mk_recorder.h
@@ -52,12 +52,13 @@ API_EXPORT void API_CALL mk_flv_recorder_release(mk_flv_recorder ctx);
 /**
  * 开始录制flv
  * @param ctx flv录制器
+ * @param vhost 虚拟主机
  * @param app 绑定的RtmpMediaSource的 app名
  * @param stream 绑定的RtmpMediaSource的 stream名
  * @param file_path 文件存放地址
  * @return 0:开始超过，-1:失败,打开文件失败或该RtmpMediaSource不存在
  */
-API_EXPORT int API_CALL mk_flv_recorder_start(mk_flv_recorder ctx, const char *app, const char *stream, const char *file_path);
+API_EXPORT int API_CALL mk_flv_recorder_start(mk_flv_recorder ctx, const char *vhost, const char *app, const char *stream, const char *file_path);
 
 
 ///////////////////////////////////////////hls/mp4录制/////////////////////////////////////////////
diff --git a/api/source/mk_recorder.cpp b/api/source/mk_recorder.cpp
index ee5baa4a..7ac4968c 100644
--- a/api/source/mk_recorder.cpp
+++ b/api/source/mk_recorder.cpp
@@ -39,11 +39,11 @@ API_EXPORT void API_CALL mk_flv_recorder_release(mk_flv_recorder ctx){
     FlvRecorder::Ptr *record = (FlvRecorder::Ptr *)(ctx);
     delete record;
 }
-API_EXPORT int API_CALL mk_flv_recorder_start(mk_flv_recorder ctx, const char *app, const char *stream, const char *file_path){
-    assert(ctx && app && stream && file_path);
+API_EXPORT int API_CALL mk_flv_recorder_start(mk_flv_recorder ctx, const char *vhost, const char *app, const char *stream, const char *file_path){
+    assert(ctx && vhost && app && stream && file_path);
     try {
         FlvRecorder::Ptr *record = (FlvRecorder::Ptr *)(ctx);
-        (*record)->startRecord(EventPollerPool::Instance().getPoller(), DEFAULT_VHOST,app,stream,file_path);
+        (*record)->startRecord(EventPollerPool::Instance().getPoller(),vhost,app,stream,file_path);
         return 0;
     }catch (std::exception &ex){
         WarnL << ex.what();