diff --git a/client/webrtc_demo/src/mainwindow.cpp b/client/webrtc_demo/src/mainwindow.cpp
index 025daed..eed0f92 100644
--- a/client/webrtc_demo/src/mainwindow.cpp
+++ b/client/webrtc_demo/src/mainwindow.cpp
@@ -58,6 +58,7 @@ MainWindow::MainWindow(QWidget *parent)
     ,mSignalClient(nullptr)
     ,mModel(nullptr)
     ,mCalling(false)
+    ,mRemoteStream(nullptr)
 {
     ui->setupUi(this);
     ui->openGLWidget->show();
@@ -451,10 +452,10 @@ void MainWindow::on_local_sdp(QString sdp)
 void MainWindow::on_track_add(webrtc::MediaStreamTrackInterface *data)
 {
     qDebug()<<"on_track_add"<<data->kind().c_str();
-    auto* track = reinterpret_cast<webrtc::MediaStreamTrackInterface*>(data);
+    mRemoteStream = reinterpret_cast<webrtc::MediaStreamTrackInterface*>(data);
 
-    if (track->kind() == webrtc::MediaStreamTrackInterface::kVideoKind) {
-        auto* video_track = static_cast<webrtc::VideoTrackInterface*>(track);
+    if (mRemoteStream->kind() == webrtc::MediaStreamTrackInterface::kVideoKind) {
+        auto* video_track = static_cast<webrtc::VideoTrackInterface*>(mRemoteStream);
         qDebug()<<"remote trackid is "<<video_track->id().c_str();
         remote_renderer_.reset(new VideoRenderer( 1, 1, video_track));
 
@@ -466,8 +467,10 @@ void MainWindow::on_track_add(webrtc::MediaStreamTrackInterface *data)
         connect((VideoRenderer*)(remote_renderer_.get()),SIGNAL(NotifySize(uint32_t ,uint32_t )),
                this,SLOT(on_notify_size(uint32_t ,uint32_t)),
                 Qt::ConnectionType::QueuedConnection);
+
+        gLog()->Log((QString::asprintf("%s %d",__FILE__,__LINE__)   +
+                     " on_track_add ").toStdString());
     }
-    track->Release();
 }
 
 void MainWindow::on_notify_size(uint32_t width, uint32_t height)
@@ -614,3 +617,16 @@ void VideoRenderer::SetSize(int width, int height)
         width * height * (bmi_.bmiHeader.biBitCount >> 3);
            image_ = new uint8_t[bmi_.bmiHeader.biSizeImage];
 }
+
+void MainWindow::on_pushButton_3_clicked()
+{
+    if(mRemoteStream != nullptr){
+        mRemoteStream->set_enabled(false);
+    }
+
+}
+
+void MainWindow::on_pushButton_4_clicked()
+{
+
+}
diff --git a/client/webrtc_demo/src/mainwindow.h b/client/webrtc_demo/src/mainwindow.h
index 01c3172..e1248d9 100644
--- a/client/webrtc_demo/src/mainwindow.h
+++ b/client/webrtc_demo/src/mainwindow.h
@@ -157,6 +157,8 @@ private slots:
     void on_local_sdp(QString);
     void on_track_add(webrtc::MediaStreamTrackInterface*);
     void on_notify_size(uint32_t,uint32_t);
+    void on_pushButton_3_clicked();
+
 private:
     Ui::MainWindow *ui;
     rtc::scoped_refptr<WebrtcHanlder> mHandler;
@@ -167,6 +169,6 @@ private:
     bool mCalling;
     std::unique_ptr<VideoRenderer> local_renderer_;
     std::unique_ptr<VideoRenderer> remote_renderer_;
-
+    webrtc::MediaStreamTrackInterface* mRemoteStream;
 };
 #endif // MAINWINDOW_H
diff --git a/client/webrtc_demo/src/mainwindow.ui b/client/webrtc_demo/src/mainwindow.ui
index 864af62..1831f3f 100644
--- a/client/webrtc_demo/src/mainwindow.ui
+++ b/client/webrtc_demo/src/mainwindow.ui
@@ -14,7 +14,7 @@
    <string>MainWindow</string>
   </property>
   <widget class="QWidget" name="centralwidget">
-   <layout class="QVBoxLayout" name="verticalLayout_2" stretch="1,15,0">
+   <layout class="QVBoxLayout" name="verticalLayout_2" stretch="1,15,1,0">
     <item>
      <layout class="QHBoxLayout" name="horizontalLayout" stretch="0,1,0,1,0,2,0,0,1,0">
       <item>
@@ -136,6 +136,50 @@
       </item>
      </layout>
     </item>
+    <item>
+     <layout class="QHBoxLayout" name="horizontalLayout_4" stretch="0,0,0,8">
+      <item>
+       <spacer name="horizontalSpacer_2">
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="sizeHint" stdset="0">
+         <size>
+          <width>40</width>
+          <height>20</height>
+         </size>
+        </property>
+       </spacer>
+      </item>
+      <item>
+       <widget class="QPushButton" name="pushButton_3">
+        <property name="text">
+         <string>暂停对方视频流</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QPushButton" name="pushButton_4">
+        <property name="text">
+         <string>暂停本地视频流</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <spacer name="horizontalSpacer">
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="sizeHint" stdset="0">
+         <size>
+          <width>40</width>
+          <height>20</height>
+         </size>
+        </property>
+       </spacer>
+      </item>
+     </layout>
+    </item>
     <item>
      <layout class="QHBoxLayout" name="horizontalLayout_3" stretch="0,0">
       <item>