diff --git a/src/Combinear.css b/src/Combinear.css
index 3af1c42..b46e6cd 100644
--- a/src/Combinear.css
+++ b/src/Combinear.css
@@ -98,6 +98,8 @@ 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#About{qproperty-icon:url(":/InfiniteViewer/Icon/about.png")}
+
 
 QToolButton#reset{qproperty-icon:url(":/InfiniteViewer/Icon/Reset.png")}
 QToolButton#planeRotate{qproperty-icon:url(":/InfiniteViewer/Icon/rotate.png")}
diff --git a/src/Icon/about.png b/src/Icon/about.png
new file mode 100644
index 0000000..4407533
Binary files /dev/null and b/src/Icon/about.png differ
diff --git a/src/QDicomViewer.qrc b/src/QDicomViewer.qrc
index ab665d8..65a1a32 100644
--- a/src/QDicomViewer.qrc
+++ b/src/QDicomViewer.qrc
@@ -59,6 +59,7 @@
         <file>Icon/preset.png</file>
         <file>Icon/diameter.png</file>
         <file>Icon/crosshair.png</file>
+        <file>Icon/about.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 cf58bf0..03ca436 100644
--- a/src/src/UI/Widget/ToolBar/DefaultToolBar.cpp
+++ b/src/src/UI/Widget/ToolBar/DefaultToolBar.cpp
@@ -5,6 +5,7 @@
 #include <QMenu>
 #include <QButtonGroup>
 #include <QActionGroup>
+#include <QMessageBox>
 #include "Rendering/Measure/Measure.h"
 #include "UI/Widget/ImageView/DicomImageView.h"
 #include "UI/Manager/ImageViewManager.h"
@@ -50,6 +51,7 @@ DefaultToolBar::DefaultToolBar(QWidget *parent) : QToolBar(parent)
         , mBtnFusion(new QToolButton(this))
         , mBtnMPR(new QToolButton(this))
         , mBtnVR(new QToolButton(this))
+        , mBtnAbout(new QToolButton(this))
         , mBtnMinimize(new QToolButton(this))
         , mBtnMaximize(new QToolButton(this))
         , mBtnClose(new QToolButton(this))
@@ -164,6 +166,9 @@ void DefaultToolBar::initToolBarButtons() {
     mBtnVR->setEnabled(false);    
     actionVR->setVisible(false);
     
+    auto actionAbout = addButton(mBtnAbout, "About");
+    mBtnAbout->setEnabled(true);    
+    actionAbout->setVisible(true);
 
     QWidget *spacer = new QWidget(this);
     spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
@@ -189,6 +194,8 @@ void DefaultToolBar::initToolBarButtons() {
     initFusionButton();
     initMPRButton();
     initVRButton();
+    initAboutButton();
+
     initCineButton();
     initClearButton();
     initScreenButtons();
@@ -617,3 +624,17 @@ void DefaultToolBar::initScreenButtons() {
 void DefaultToolBar::initVRButton() {
     connect(mBtnVR, &QToolButton::clicked, this, &DefaultToolBar::volumeRendering);
 }
+
+void DefaultToolBar::initAboutButton()
+{
+    connect(mBtnAbout, &QToolButton::clicked, [=](){
+        QMessageBox::about(this,tr("About"),QString("%1(%2:%3)\n%4\n%5")
+        .arg("USCT Viewer")
+        .arg("Version")
+        .arg("1.0.0")
+        .arg(tr("Built with Qt 5.12.0 and VTK 9.2."))
+        .arg(QString(tr("Copyright © %1 Zhejiang Equilibrium Nine Medical Equipment Co., Ltd. \nAll Rights Reserved"))
+        .arg(2025)));
+    });
+
+}
diff --git a/src/src/UI/Widget/ToolBar/DefaultToolBar.h b/src/src/UI/Widget/ToolBar/DefaultToolBar.h
index 538bde0..8402f95 100644
--- a/src/src/UI/Widget/ToolBar/DefaultToolBar.h
+++ b/src/src/UI/Widget/ToolBar/DefaultToolBar.h
@@ -63,6 +63,7 @@ private:
     void initClearButton();
     void initMPRButton();
     void initVRButton();
+    void initAboutButton();
     void initTransformButton();
     void initScreenButtons();
 
@@ -86,6 +87,7 @@ private:
     QToolButton *mBtnFusion;
     QToolButton *mBtnMPR;
     QToolButton *mBtnVR;
+    QToolButton *mBtnAbout;
     QToolButton *mBtnMinimize;
     QToolButton *mBtnMaximize;
     QToolButton *mBtnClose;