diff --git a/README.md b/README.md
index fee0e5d7..c0fd512f 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@
 
 开源的Git客户端，仅用于Windows 10。单文件，无需安装，< 500KB。
 
+## 预览
+
 * DarkTheme
 
 ![Preview_Dark](./Preview_Dark.png)
@@ -10,3 +12,7 @@
 
 ![Preview_Light](./Preview_Light.png)
 
+
+## Thanks
+
+* [PUMA](https://gitee.com/whgfu) 配置默认User
diff --git a/UI/Preference.xaml b/UI/Preference.xaml
index 7bd3d5e0..57296653 100644
--- a/UI/Preference.xaml
+++ b/UI/Preference.xaml
@@ -8,7 +8,7 @@
         xmlns:app="clr-namespace:SourceGit"
         xmlns:git="clr-namespace:SourceGit.Git"
         mc:Ignorable="d"
-        Height="362" Width="500">
+        Height="472" Width="500">
     <Grid>
         <Grid.RowDefinitions>
             <RowDefinition Height="36"/>
@@ -21,6 +21,10 @@
             <RowDefinition Height="36"/>
             <RowDefinition Height="28"/>
             <RowDefinition Height="28"/>
+            <RowDefinition Height="18"/>
+            <RowDefinition Height="36"/>
+            <RowDefinition Height="28"/>
+            <RowDefinition Height="28"/>
             <RowDefinition Height="28"/>
             <RowDefinition Height="18"/>
             <RowDefinition Height="32"/>
@@ -75,11 +79,18 @@
                 <Path Width="14" Style="{StaticResource Style.Icon}" Data="{StaticResource Icon.Folder}"/>
             </Button>
         </Grid>
+        
+        <!-- Global User -->
+        <Label Grid.Row="7" Grid.ColumnSpan="2" Content="Global User" FontSize="18"/>
+        <Label Grid.Row="8" Grid.Column="0" Content="Name :" HorizontalAlignment="Right"/>
+        <TextBox Grid.Row="8" Grid.Column="1" Height="24" helpers:TextBoxHelper.Placeholder="Global git user name" Text="{Binding ElementName=me, Path=GlobalUser, Mode=TwoWay}"/>
+        <Label Grid.Row="9" Grid.Column="0" Content="Email :" HorizontalAlignment="Right"/>
+        <TextBox Grid.Row="9" Grid.Column="1" Height="24" helpers:TextBoxHelper.Placeholder="Global git user email" Text="{Binding ElementName=me, Path=GlobalUserEmail, Mode=TwoWay}"/>
 
         <!-- 合并工具配置 -->
-        <Label Grid.Row="7" Grid.ColumnSpan="2" Content="Merge Tool" FontSize="18"/>
-        <Label Grid.Row="8" Grid.Column="0" Content="Choose Merger :" HorizontalAlignment="Right"/>
-        <ComboBox Grid.Row="8" Grid.Column="1"
+        <Label Grid.Row="11" Grid.ColumnSpan="2" Content="Merge Tool" FontSize="18"/>
+        <Label Grid.Row="12" Grid.Column="0" Content="Choose Merger :" HorizontalAlignment="Right"/>
+        <ComboBox Grid.Row="12" Grid.Column="1"
              Height="24"
              Padding="2,0,0,0"
              HorizontalContentAlignment="Left"
@@ -88,8 +99,8 @@
              ItemsSource="{Binding Source={x:Static git:MergeTool.Supported}}"
              DisplayMemberPath="Name"
              SelectionChanged="ChangeMergeTool"/>
-        <Label Grid.Row="9" Grid.Column="0" Content="Install Path :" HorizontalAlignment="Right"/>
-        <Grid Grid.Row="9" Grid.Column="1">
+        <Label Grid.Row="13" Grid.Column="0" Content="Install Path :" HorizontalAlignment="Right"/>
+        <Grid Grid.Row="13" Grid.Column="1">
             <Grid.ColumnDefinitions>
                 <ColumnDefinition Width="*"/>
                 <ColumnDefinition Width="28"/>
@@ -104,13 +115,13 @@
                 <Path Width="14" Style="{StaticResource Style.Icon}" Data="{StaticResource Icon.Folder}"/>
             </Button>
         </Grid>
-        <Label Grid.Row="10" Grid.Column="0" Content="Command :" HorizontalAlignment="Right"/>
-        <TextBlock Grid.Row="10" Grid.Column="1" 
+        <Label Grid.Row="14" Grid.Column="0" Content="Command :" HorizontalAlignment="Right"/>
+        <TextBlock Grid.Row="14" Grid.Column="1" 
                    x:Name="txtMergeParam"
                    VerticalAlignment="Center"
                    Foreground="{StaticResource Brush.FG2}"/>
 
-        <Button Grid.Row="12" Grid.Column="1" 
+        <Button Grid.Row="16" Grid.Column="1" 
                 Content="CLOSE"
                 Click="Close"
                 Width="80"
diff --git a/UI/Preference.xaml.cs b/UI/Preference.xaml.cs
index d415efae..a9785d0a 100644
--- a/UI/Preference.xaml.cs
+++ b/UI/Preference.xaml.cs
@@ -1,5 +1,7 @@
 using Microsoft.Win32;
 using System;
+using System.Diagnostics;
+using System.Text;
 using System.Windows;
 using System.Windows.Controls;
 
@@ -10,10 +12,29 @@ namespace SourceGit.UI {
     /// </summary>
     public partial class Preference : UserControl {
 
+        /// <summary>
+        ///     Git global user name.
+        /// </summary>
+        public string GlobalUser {
+            get;
+            set;
+        }
+
+        /// <summary>
+        ///     Git global user email.
+        /// </summary>
+        public string GlobalUserEmail {
+            get;
+            set;
+        }
+
         /// <summary>
         ///     Constructor.
         /// </summary>
         public Preference() {
+            GlobalUser = GetConfig("user.name");
+            GlobalUserEmail = GetConfig("user.email");
+
             InitializeComponent();
 
             int mergeType = App.Preference.MergeTool;
@@ -33,6 +54,12 @@ namespace SourceGit.UI {
         ///     Close this dialog
         /// </summary>
         private void Close(object sender, RoutedEventArgs e) {
+            var oldUser = GetConfig("user.name");
+            if (oldUser != GlobalUser) SetConfig("user.name", GlobalUser);
+
+            var oldEmail = GetConfig("user.email");
+            if (oldEmail != GlobalUserEmail) SetConfig("user.email", GlobalUserEmail);
+
             PopupManager.Close();
         }
 
@@ -110,5 +137,42 @@ namespace SourceGit.UI {
                 App.Preference.MergeExecutable = dialog.FileName;
             }
         }
+
+        #region CONFIG
+        private string GetConfig(string key) {
+            if (!App.IsGitConfigured) return "";
+
+            var startInfo = new ProcessStartInfo();
+            startInfo.FileName = App.Preference.GitExecutable;
+            startInfo.Arguments = $"config --global {key}";
+            startInfo.UseShellExecute = false;
+            startInfo.CreateNoWindow = true;
+            startInfo.RedirectStandardOutput = true;
+            startInfo.StandardOutputEncoding = Encoding.UTF8;
+
+            var proc = new Process() { StartInfo = startInfo };
+            proc.Start();
+            var output = proc.StandardOutput.ReadToEnd();
+            proc.WaitForExit();
+            proc.Close();
+
+            return output.Trim();
+        }
+
+        private void SetConfig(string key, string val) {
+            if (!App.IsGitConfigured) return;
+
+            var startInfo = new ProcessStartInfo();
+            startInfo.FileName = App.Preference.GitExecutable;
+            startInfo.Arguments = $"config --global {key} \"{val}\"";
+            startInfo.UseShellExecute = false;
+            startInfo.CreateNoWindow = true;
+
+            var proc = new Process() { StartInfo = startInfo };
+            proc.Start();
+            proc.WaitForExit();
+            proc.Close();
+        }
+        #endregion
     }
 }