diff --git a/src/Combinear.css b/src/Combinear.css
index 9252859..d8a146a 100644
--- a/src/Combinear.css
+++ b/src/Combinear.css
@@ -97,6 +97,7 @@ QToolButton#flip{qproperty-icon:url(":/InfiniteViewer/Icon/flip.png")}
 QToolButton#cine{qproperty-icon:url(":/InfiniteViewer/Icon/cine.png")}
 QToolButton#fusion{qproperty-icon:url(":/InfiniteViewer/Icon/fusion.png")}
 QToolButton#MPR{qproperty-icon:url(":/InfiniteViewer/Icon/MPR.png")}
+QToolButton#VR{qproperty-icon:url(":/InfiniteViewer/Icon/VR.png")}
 
 QToolButton#minimize{
 	min-height: 25px;
@@ -241,4 +242,9 @@ QSlider::handle:horizontal:disabled
 	border: 1px solid #aaa;
 	border-radius: 3px;
 
+}
+
+VolumeRenderingWindow#volumeWin{
+	border:1px solid #cdcdcd;
+	border-top:1px solid #333333;
 }
\ No newline at end of file
diff --git a/src/Icon/VR.png b/src/Icon/VR.png
new file mode 100644
index 0000000..c4eb09b
Binary files /dev/null and b/src/Icon/VR.png differ
diff --git a/src/QDicomViewer.qrc b/src/QDicomViewer.qrc
index 395472b..77bec28 100644
--- a/src/QDicomViewer.qrc
+++ b/src/QDicomViewer.qrc
@@ -51,6 +51,7 @@
         <file>Icon/fusionable.png</file>
         <file>Icon/unfusionable.png</file>
         <file>Icon/unMPR.png</file>
+        <file>Icon/VR.png</file>
     </qresource>
     <qresource prefix="/pqWidgets">
         <file>Icon/pq/pqBold24.png</file>
diff --git a/src/src/UI/Widget/ToolBar/DefaultToolBar.cpp b/src/src/UI/Widget/ToolBar/DefaultToolBar.cpp
index a9232ff..dcfcb97 100644
--- a/src/src/UI/Widget/ToolBar/DefaultToolBar.cpp
+++ b/src/src/UI/Widget/ToolBar/DefaultToolBar.cpp
@@ -43,6 +43,7 @@ DefaultToolBar::DefaultToolBar(QWidget *parent) : QToolBar(parent)
         , mBtnCine(new QToolButton(this))
         , mBtnFusion(new QToolButton(this))
         , mBtnMPR(new QToolButton(this))
+        , mBtnVR(new QToolButton(this))
         , mBtnMinimize(new QToolButton(this))
         , mBtnMaximize(new QToolButton(this))
         , mBtnClose(new QToolButton(this))
@@ -106,6 +107,7 @@ void DefaultToolBar::initToolBarButtons() {
     addButton(mBtnCine, "cine");
     addButton(mBtnFusion, "fusion");
     addButton(mBtnMPR, "MPR");
+    addButton(mBtnVR, "VR");
 
     QWidget *spacer = new QWidget(this);
     spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
@@ -130,6 +132,7 @@ void DefaultToolBar::initToolBarButtons() {
     initTransformButton();
     initFusionButton();
     initMPRButton();
+    initVRButton();
     initCineButton();
     initClearButton();
     initScreenButtons();
@@ -456,4 +459,8 @@ void DefaultToolBar::initScreenButtons() {
 
     mBtnClose->setToolTip(QString("Close"));
     connect(mBtnClose, &QToolButton::clicked, this, &DefaultToolBar::parentWindowClose);
-}
\ No newline at end of file
+}
+
+void DefaultToolBar::initVRButton() {
+    connect(mBtnVR, &QToolButton::clicked, this, &DefaultToolBar::volumeRendering);
+}
diff --git a/src/src/UI/Widget/ToolBar/DefaultToolBar.h b/src/src/UI/Widget/ToolBar/DefaultToolBar.h
index 27c81de..2009c1c 100644
--- a/src/src/UI/Widget/ToolBar/DefaultToolBar.h
+++ b/src/src/UI/Widget/ToolBar/DefaultToolBar.h
@@ -39,6 +39,7 @@ signals:
     void parentWindowClose();
     void transform(TransFormType type);
     void showMeta();
+    void volumeRendering();
     void referenceLineStateChange(bool isShow);
 private:
     QAction *addButton(QToolButton *button, const char *objectName);
@@ -47,7 +48,6 @@ private:
 
     void initToolBarButtons();
     void syncStateChanged() const;
-    void initMPRButton();
 
     void initFileButton();
     void initImportButton();
@@ -60,6 +60,8 @@ private:
     void initFusionButton();
     void initCineButton();
     void initClearButton();
+    void initMPRButton();
+    void initVRButton();
     void initTransformButton();
     void initScreenButtons();
 
@@ -82,6 +84,7 @@ private:
     QToolButton *mBtnCine;
     QToolButton *mBtnFusion;
     QToolButton *mBtnMPR;
+    QToolButton *mBtnVR;
     QToolButton *mBtnMinimize;
     QToolButton *mBtnMaximize;
     QToolButton *mBtnClose;