diff --git a/AboutDlg.cpp b/AboutDlg.cpp
new file mode 100644
index 0000000..cd095e6
--- /dev/null
+++ b/AboutDlg.cpp
@@ -0,0 +1,27 @@
+#include "AboutDlg.h"
+#include "ui_AboutDlg.h"
+
+#include <QMessageBox>
+
+AboutDlg::AboutDlg(QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::AboutDlg)
+{
+    ui->setupUi(this);
+}
+
+AboutDlg::~AboutDlg()
+{
+    delete ui;
+}
+
+void AboutDlg::on_toolButton_AboutQt_clicked()
+{
+    QMessageBox::aboutQt(this);
+}
+
+void AboutDlg::on_pushButton_Ok_clicked()
+{
+    accept();
+}
+
diff --git a/AboutDlg.h b/AboutDlg.h
new file mode 100644
index 0000000..270ff5b
--- /dev/null
+++ b/AboutDlg.h
@@ -0,0 +1,27 @@
+#ifndef ABOUTDLG_H
+#define ABOUTDLG_H
+
+#include <QDialog>
+
+namespace Ui {
+class AboutDlg;
+}
+
+class AboutDlg : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit AboutDlg(QWidget *parent = nullptr);
+    ~AboutDlg();
+
+private slots:
+    void on_toolButton_AboutQt_clicked();
+
+    void on_pushButton_Ok_clicked();
+
+private:
+    Ui::AboutDlg *ui;
+};
+
+#endif // ABOUTDLG_H
diff --git a/AboutDlg.ui b/AboutDlg.ui
new file mode 100644
index 0000000..d9100eb
--- /dev/null
+++ b/AboutDlg.ui
@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>AboutDlg</class>
+ <widget class="QDialog" name="AboutDlg">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>600</width>
+    <height>200</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>关于软件</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QPlainTextEdit" name="plainTextEdit">
+     <property name="plainText">
+      <string>Email: LiaoChengO@qq.com
+https://github.com/CharlesLiaoO/EncodingConverter
+Build with Qt/C++</string>
+     </property>
+     <property name="textInteractionFlags">
+      <set>Qt::LinksAccessibleByKeyboard|Qt::LinksAccessibleByMouse|Qt::TextBrowserInteraction|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QToolButton" name="toolButton_AboutQt">
+       <property name="text">
+        <string>About Qt</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>
+     <item>
+      <widget class="QPushButton" name="pushButton_Ok">
+       <property name="text">
+        <string>确认</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/EncodingConverter.pro b/EncodingConverter.pro
index f9a10a3..95361b0 100644
--- a/EncodingConverter.pro
+++ b/EncodingConverter.pro
@@ -17,13 +17,16 @@ else: unix:!android: target.path = /opt/$${TARGET}/bin
 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
 
 SOURCES += \
+    AboutDlg.cpp \
     NotPrjRel.cpp \
     main.cpp \
     MainWindow.cpp
 
 HEADERS += \
+    AboutDlg.h \
     MainWindow.h \
     NotPrjRel.h
 
 FORMS += \
+    AboutDlg.ui \
     MainWindow.ui
diff --git a/MainWindow.cpp b/MainWindow.cpp
index 9e27f3e..133641b 100644
--- a/MainWindow.cpp
+++ b/MainWindow.cpp
@@ -24,6 +24,7 @@ MainWindow::MainWindow(QWidget *parent)
     , ui(new Ui::MainWindow)
 {
     ui->setupUi(this);
+    ui->toolButton_About->setIcon(style()->standardIcon(QStyle::SP_MessageBoxInformation));
 
     iBigFileSizeMB = (double)iBigFileSize / (1024*1024);
     iMaxFileSizeGB = (double)iMaxFileSize / (1024*1024*1024);
@@ -317,3 +318,10 @@ void MainWindow::UpdateProgress(int lineNum, float percentage)
     ui->plainTextEdit_MsgOutput->appendPlainText(sOutputLine);
 }
 
+#include <AboutDlg.h>
+void MainWindow::on_toolButton_About_clicked()
+{
+    AboutDlg aboutDlg(this);
+    aboutDlg.exec();
+}
+
diff --git a/MainWindow.h b/MainWindow.h
index 75f91bf..e8b2a53 100644
--- a/MainWindow.h
+++ b/MainWindow.h
@@ -25,6 +25,8 @@ private slots:
     void on_comboBox_EncodingDest_currentTextChanged(const QString &arg1);
     void closeEvent(QCloseEvent *e);
 
+    void on_toolButton_About_clicked();
+
 private:
     Ui::MainWindow *ui;
 
diff --git a/MainWindow.ui b/MainWindow.ui
index fb0e69d..1da7100 100644
--- a/MainWindow.ui
+++ b/MainWindow.ui
@@ -300,6 +300,13 @@
           </property>
          </spacer>
         </item>
+        <item>
+         <widget class="QToolButton" name="toolButton_About">
+          <property name="text">
+           <string notr="true"/>
+          </property>
+         </widget>
+        </item>
        </layout>
       </item>
       <item>
@@ -341,16 +348,6 @@
     </item>
    </layout>
   </widget>
-  <widget class="QMenuBar" name="menubar">
-   <property name="geometry">
-    <rect>
-     <x>0</x>
-     <y>0</y>
-     <width>800</width>
-     <height>18</height>
-    </rect>
-   </property>
-  </widget>
  </widget>
  <resources/>
  <connections/>