diff --git a/src/Common/MediaSource.cpp b/src/Common/MediaSource.cpp
index 2b2f5b35..75d6c269 100644
--- a/src/Common/MediaSource.cpp
+++ b/src/Common/MediaSource.cpp
@@ -253,22 +253,25 @@ MediaSource::Ptr MediaSource::find(const string &schema, const string &vhost_tmp
         vhost = DEFAULT_VHOST;
     }
 
-    lock_guard<recursive_mutex> lock(g_mtxMediaSrc);
     MediaSource::Ptr ret;
-	//查找某一媒体源，找到后返回
-    searchMedia(g_mapMediaSrc, schema, vhost, app, id, [&](SchemaVhostAppStreamMap::iterator &it0,
-                                                           VhostAppStreamMap::iterator &it1,
-                                                           AppStreamMap::iterator &it2,
-                                                           StreamMap::iterator &it3) {
-        ret = it3->second.lock();
-        if (!ret) {
-            //该对象已经销毁
-            it2->second.erase(it3);
-            eraseIfEmpty(g_mapMediaSrc,it0, it1, it2);
-            return false;
-        }
-        return true;
-    });
+    {
+        lock_guard<recursive_mutex> lock(g_mtxMediaSrc);
+        //查找某一媒体源，找到后返回
+        searchMedia(g_mapMediaSrc, schema, vhost, app, id, [&](SchemaVhostAppStreamMap::iterator &it0,
+                                                               VhostAppStreamMap::iterator &it1,
+                                                               AppStreamMap::iterator &it2,
+                                                               StreamMap::iterator &it3) {
+            ret = it3->second.lock();
+            if (!ret) {
+                //该对象已经销毁
+                it2->second.erase(it3);
+                eraseIfEmpty(g_mapMediaSrc, it0, it1, it2);
+                return false;
+            }
+            return true;
+        });
+    }
+
     if(!ret && bMake){
         //未查找媒体源，则创建一个
         ret = MP4Reader::onMakeMediaSource(schema, vhost,app,id);
@@ -288,29 +291,34 @@ void MediaSource::regist() {
     InfoL << _strSchema << " " << _strVhost << " " << _strApp << " " << _strId;
     NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaChanged, true, *this);
 }
-bool MediaSource::unregist() {
-    //反注册该源
-    lock_guard<recursive_mutex> lock(g_mtxMediaSrc);
-    return searchMedia(g_mapMediaSrc, _strSchema, _strVhost, _strApp, _strId,[&](SchemaVhostAppStreamMap::iterator &it0,
-                                                                                 VhostAppStreamMap::iterator &it1,
-                                                                                 AppStreamMap::iterator &it2,
-                                                                                 StreamMap::iterator &it3) {
-        auto strongMedia = it3->second.lock();
-        if (strongMedia && this != strongMedia.get()) {
-            //不是自己,不允许反注册
-            return false;
-        }
-        it2->second.erase(it3);
-        eraseIfEmpty(g_mapMediaSrc, it0, it1, it2);
-        unregisted();
-        return true;
-    });
-}
-void MediaSource::unregisted(){
-    InfoL <<  "" <<  _strSchema << " " << _strVhost << " " << _strApp << " " << _strId;
-    NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaChanged, false, *this);
-}
 
+//反注册该源
+bool MediaSource::unregist() {
+    bool ret;
+    {
+        lock_guard<recursive_mutex> lock(g_mtxMediaSrc);
+        ret = searchMedia(g_mapMediaSrc, _strSchema, _strVhost, _strApp, _strId,
+                          [&](SchemaVhostAppStreamMap::iterator &it0,
+                              VhostAppStreamMap::iterator &it1,
+                              AppStreamMap::iterator &it2,
+                              StreamMap::iterator &it3) {
+                              auto strongMedia = it3->second.lock();
+                              if (strongMedia && this != strongMedia.get()) {
+                                  //不是自己,不允许反注册
+                                  return false;
+                              }
+                              it2->second.erase(it3);
+                              eraseIfEmpty(g_mapMediaSrc, it0, it1, it2);
+                              return true;
+                          });
+    }
+
+    if(ret){
+        InfoL <<  "" <<  _strSchema << " " << _strVhost << " " << _strApp << " " << _strId;
+        NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaChanged, false, *this);
+    }
+    return ret;
+}
 
 /////////////////////////////////////MediaInfo//////////////////////////////////////
 
diff --git a/src/Common/MediaSource.h b/src/Common/MediaSource.h
index 385d6d8c..e6920050 100644
--- a/src/Common/MediaSource.h
+++ b/src/Common/MediaSource.h
@@ -151,7 +151,6 @@ public:
 protected:
     void regist() ;
     bool unregist() ;
-    void unregisted();
 private:
     string _strSchema;
     string _strVhost;