diff --git a/src/Common/MediaSource.cpp b/src/Common/MediaSource.cpp
index 5e378124..66d333c1 100644
--- a/src/Common/MediaSource.cpp
+++ b/src/Common/MediaSource.cpp
@@ -153,6 +153,8 @@ std::shared_ptr<void> MediaSource::getOwnership() {
         //已经被所有
         return nullptr;
     }
+    // 关闭所有rtp推流，确保线程安全
+    stopSendRtp("");
     weak_ptr<MediaSource> weak_self = shared_from_this();
     //确保返回的Ownership智能指针不为空，0x01无实际意义
     return std::shared_ptr<void>((void *) 0x01, [weak_self](void *ptr) {
diff --git a/src/Common/MultiMediaSourceMuxer.cpp b/src/Common/MultiMediaSourceMuxer.cpp
index f1a076c9..389da30f 100644
--- a/src/Common/MultiMediaSourceMuxer.cpp
+++ b/src/Common/MultiMediaSourceMuxer.cpp
@@ -246,6 +246,10 @@ void MultiMediaSourceMuxer::startSendRtp(MediaSource &sender, const MediaSourceE
         if (!strong_self || ex) {
             return;
         }
+        if (!strong_self->getOwnerPoller(MediaSource::NullMediaSource())->isCurrentThread()) {
+            // poller线程发生变更了
+            return;
+        }
         for (auto &track : strong_self->getTracks(false)) {
             rtp_sender->addTrack(track);
         }