diff --git a/src/Rtmp/RtmpMediaSource.h b/src/Rtmp/RtmpMediaSource.h
index 0e0c7091..5718c94f 100644
--- a/src/Rtmp/RtmpMediaSource.h
+++ b/src/Rtmp/RtmpMediaSource.h
@@ -107,6 +107,14 @@ public:
         }
     }
 
+    /**
+     * 更新metadata
+     */
+    void updateMetaData(const AMFValue &metadata) {
+        lock_guard<recursive_mutex> lock(_mtx);
+        _metadata = metadata;
+    }
+
     /**
      * 输入rtmp包
      * @param pkt rtmp包
diff --git a/src/Rtmp/RtmpMediaSourceImp.h b/src/Rtmp/RtmpMediaSourceImp.h
index 4e8aae87..d2a1267a 100644
--- a/src/Rtmp/RtmpMediaSourceImp.h
+++ b/src/Rtmp/RtmpMediaSourceImp.h
@@ -53,9 +53,8 @@ public:
             //该metadata无效，需要重新生成
             _metadata = metadata;
             _recreate_metadata = true;
-        }else{
-            RtmpMediaSource::setMetaData(metadata);
         }
+        RtmpMediaSource::setMetaData(metadata);
     }
 
     /**
@@ -158,8 +157,8 @@ public:
         _all_track_ready = true;
 
         if(_recreate_metadata){
-            //需要重新生成metadata
-            RtmpMediaSource::setMetaData(_metadata);
+            //更新metadata
+            RtmpMediaSource::updateMetaData(_metadata);
         }
     }