diff --git a/v2rayN/ServiceLib/Handler/ConfigHandler.cs b/v2rayN/ServiceLib/Handler/ConfigHandler.cs
index 17271c57..9ebb928d 100644
--- a/v2rayN/ServiceLib/Handler/ConfigHandler.cs
+++ b/v2rayN/ServiceLib/Handler/ConfigHandler.cs
@@ -240,6 +240,7 @@ namespace ServiceLib.Handler
                 item.PublicKey = profileItem.PublicKey;
                 item.ShortId = profileItem.ShortId;
                 item.SpiderX = profileItem.SpiderX;
+                item.Extra = profileItem.Extra;
             }
 
             var ret = item.ConfigType switch
diff --git a/v2rayN/ServiceLib/Handler/Fmt/BaseFmt.cs b/v2rayN/ServiceLib/Handler/Fmt/BaseFmt.cs
index 374fd9cb..c39ffe01 100644
--- a/v2rayN/ServiceLib/Handler/Fmt/BaseFmt.cs
+++ b/v2rayN/ServiceLib/Handler/Fmt/BaseFmt.cs
@@ -107,6 +107,10 @@ namespace ServiceLib.Handler.Fmt
                     {
                         dicQuery.Add("mode", Utils.UrlEncode(item.HeaderType));
                     }
+                    if (Utils.IsNotEmpty(item.Extra))
+                    {
+                        dicQuery.Add("extra", Utils.UrlEncode(item.Extra));
+                    }
                     break;
 
                 case nameof(ETransport.http):
@@ -180,6 +184,7 @@ namespace ServiceLib.Handler.Fmt
                     item.RequestHost = Utils.UrlDecode(query["host"] ?? "");
                     item.Path = Utils.UrlDecode(query["path"] ?? "/");
                     item.HeaderType = Utils.UrlDecode(query["mode"] ?? "");
+                    item.Extra = Utils.UrlDecode(query["extra"] ?? "");
                     break;
 
                 case nameof(ETransport.http):
diff --git a/v2rayN/ServiceLib/Models/ProfileItem.cs b/v2rayN/ServiceLib/Models/ProfileItem.cs
index b6e9aa6a..8bf5405e 100644
--- a/v2rayN/ServiceLib/Models/ProfileItem.cs
+++ b/v2rayN/ServiceLib/Models/ProfileItem.cs
@@ -30,44 +30,25 @@ namespace ServiceLib.Models
 
         public string GetSummary()
         {
-            string summary = string.Format("[{0}] ", (ConfigType).ToString());
-            string[] arrAddr = Address.Split('.');
-            string addr;
-            if (arrAddr.Length > 2)
+            var summary = $"[{(ConfigType).ToString()}] ";
+            var arrAddr = Address.Split('.');
+            var addr = arrAddr.Length switch
             {
-                addr = $"{arrAddr.First()}***{arrAddr.Last()}";
-            }
-            else if (arrAddr.Length > 1)
-            {
-                addr = $"***{arrAddr.Last()}";
-            }
-            else
+                > 2 => $"{arrAddr.First()}***{arrAddr.Last()}",
+                > 1 => $"***{arrAddr.Last()}",
+                _ => Address
+            };
+            summary += ConfigType switch
             {
-                addr = Address;
-            }
-            switch (ConfigType)
-            {
-                case EConfigType.Custom:
-                    summary += string.Format("[{1}]{0}", Remarks, CoreType.ToString());
-                    break;
-
-                default:
-                    summary += string.Format("{0}({1}:{2})", Remarks, addr, Port);
-                    break;
-            }
+                EConfigType.Custom => $"[{CoreType.ToString()}]{Remarks}",
+                _ => $"{Remarks}({addr}:{Port})"
+            };
             return summary;
         }
 
         public List<string>? GetAlpn()
         {
-            if (Utils.IsNullOrEmpty(Alpn))
-            {
-                return null;
-            }
-            else
-            {
-                return Utils.String2List(Alpn);
-            }
+            return Utils.IsNullOrEmpty(Alpn) ? null : Utils.String2List(Alpn);
         }
 
         public string GetNetwork()
@@ -110,5 +91,6 @@ namespace ServiceLib.Models
         public string PublicKey { get; set; }
         public string ShortId { get; set; }
         public string SpiderX { get; set; }
+        public string Extra { get; set; }
     }
 }
\ No newline at end of file
diff --git a/v2rayN/ServiceLib/Models/V2rayConfig.cs b/v2rayN/ServiceLib/Models/V2rayConfig.cs
index 710d627f..725d616a 100644
--- a/v2rayN/ServiceLib/Models/V2rayConfig.cs
+++ b/v2rayN/ServiceLib/Models/V2rayConfig.cs
@@ -353,6 +353,7 @@ namespace ServiceLib.Models
         public string? scMaxConcurrentPosts { get; set; }
         public string? scMinPostsIntervalMs { get; set; }
         public Xmux4Ray? xmux { get; set; }
+        public object? extra { get; set; }
     }
 
     public class Xmux4Ray
diff --git a/v2rayN/ServiceLib/Resx/ResUI.Designer.cs b/v2rayN/ServiceLib/Resx/ResUI.Designer.cs
index 76229529..30568641 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.Designer.cs
+++ b/v2rayN/ServiceLib/Resx/ResUI.Designer.cs
@@ -3697,6 +3697,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 XHTTP Extra raw JSON, format: { XHTTPObject } 的本地化字符串。
+        /// </summary>
+        public static string TransportExtraTip {
+            get {
+                return ResourceManager.GetString("TransportExtraTip", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 *tcp camouflage type 的本地化字符串。
         /// </summary>
diff --git a/v2rayN/ServiceLib/Resx/ResUI.fa-Ir.resx b/v2rayN/ServiceLib/Resx/ResUI.fa-Ir.resx
index 917a82fc..991c9fe2 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.fa-Ir.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.fa-Ir.resx
@@ -1384,4 +1384,7 @@
   <data name="TransportHeaderTypeTip5" xml:space="preserve">
     <value>*xhttp mode</value>
   </data>
+  <data name="TransportExtraTip" xml:space="preserve">
+    <value>XHTTP Extra raw JSON, format: { XHTTPObject }</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/v2rayN/ServiceLib/Resx/ResUI.resx b/v2rayN/ServiceLib/Resx/ResUI.resx
index 22f7d4c2..9c69dc95 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.resx
@@ -1384,4 +1384,7 @@
   <data name="TransportHeaderTypeTip5" xml:space="preserve">
     <value>*xhttp mode</value>
   </data>
+  <data name="TransportExtraTip" xml:space="preserve">
+    <value>XHTTP Extra raw JSON, format: { XHTTPObject }</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/v2rayN/ServiceLib/Resx/ResUI.ru.resx b/v2rayN/ServiceLib/Resx/ResUI.ru.resx
index a7e16f18..20395013 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.ru.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.ru.resx
@@ -1384,4 +1384,7 @@
   <data name="TransportHeaderTypeTip5" xml:space="preserve">
     <value>*xhttp mode</value>
   </data>
+  <data name="TransportExtraTip" xml:space="preserve">
+    <value>XHTTP Extra raw JSON, format: { XHTTPObject }</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx b/v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx
index fc83b374..18631825 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx
@@ -1381,4 +1381,7 @@
   <data name="TransportHeaderTypeTip5" xml:space="preserve">
     <value>*xhttp 模式</value>
   </data>
+  <data name="TransportExtraTip" xml:space="preserve">
+    <value>XHTTP Extra 原始 JSON，格式： { XHTTPObject }</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx b/v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx
index 898ab7f6..c68e0da6 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx
@@ -1381,4 +1381,7 @@
   <data name="TransportHeaderTypeTip5" xml:space="preserve">
     <value>*xhttp 模式</value>
   </data>
+  <data name="TransportExtraTip" xml:space="preserve">
+    <value>XHTTP Extra 原始 JSON，格式： { XHTTPObject }</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
index 511498b9..d8f787e8 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
@@ -949,6 +949,10 @@ namespace ServiceLib.Services.CoreConfig
                         {
                             xhttpSettings.mode = node.HeaderType;
                         }
+                        if (Utils.IsNotEmpty(node.Extra))
+                        {
+                            xhttpSettings.extra = JsonUtils.ParseJson(node.Extra);
+                        }
 
                         streamSettings.xhttpSettings = xhttpSettings;
 
diff --git a/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml b/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml
index 5c6dff35..849bd0ce 100644
--- a/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml
+++ b/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml
@@ -112,7 +112,7 @@
                         x:Name="txtPort"
                         Grid.Row="3"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         HorizontalAlignment="Left"
                         Classes="Margin8" />
                 </Grid>
@@ -164,7 +164,7 @@
                         x:Name="txtAlterId"
                         Grid.Row="2"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         HorizontalAlignment="Left"
                         Classes="Margin8" />
 
@@ -458,7 +458,7 @@
                         x:Name="cmbHeaderType8"
                         Grid.Row="3"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         Classes="Margin8" />
                 </Grid>
                 <Grid
@@ -541,7 +541,7 @@
                         x:Name="txtShortId9"
                         Grid.Row="5"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         HorizontalAlignment="Left"
                         Classes="Margin8" />
                 </Grid>
@@ -584,7 +584,7 @@
                         x:Name="cmbNetwork"
                         Grid.Row="1"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         Classes="Margin8" />
                     <TextBlock
                         Grid.Row="1"
@@ -600,12 +600,50 @@
                         VerticalAlignment="Center"
                         Classes="Margin8"
                         Text="{x:Static resx:ResUI.TbHeaderType}" />
-                    <ComboBox
-                        x:Name="cmbHeaderType"
+                    <StackPanel
                         Grid.Row="2"
                         Grid.Column="1"
-                        Width="100"
-                        Classes="Margin8" />
+                        VerticalAlignment="Center"
+                        Orientation="Horizontal">
+                        <ComboBox
+                            x:Name="cmbHeaderType"
+                            Width="200"
+                            Classes="Margin8" />
+
+                        <Button
+                            x:Name="btnExtra"
+                            Width="30"
+                            Height="30"
+                            Margin="10,0"
+                            Theme="{DynamicResource BorderlessButton}">
+                            <Button.Content>
+                                <PathIcon
+                                    Width="20"
+                                    Height="20"
+                                    Data="{StaticResource building_more}"
+                                    Foreground="{DynamicResource ButtonDefaultTertiaryForeground}" />
+                            </Button.Content>
+                            <Button.Flyout>
+                                <Flyout>
+                                    <StackPanel>
+                                        <TextBlock
+                                            VerticalAlignment="Center"
+                                            Classes="Margin8"
+                                            Text="{x:Static resx:ResUI.TransportExtraTip}" />
+                                        <TextBox
+                                            x:Name="txtExtra"
+                                            Width="400"
+                                            MinHeight="100"
+                                            HorizontalAlignment="Stretch"
+                                            VerticalAlignment="Center"
+                                            Classes="TextArea Margin8"
+                                            MinLines="6"
+                                            TextWrapping="Wrap" />
+                                    </StackPanel>
+                                </Flyout>
+                            </Button.Flyout>
+                        </Button>
+                    </StackPanel>
                     <TextBlock
                         x:Name="tipHeaderType"
                         Grid.Row="2"
@@ -680,7 +718,7 @@
                         x:Name="cmbStreamSecurity"
                         Grid.Row="0"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         Classes="Margin8" />
                 </Grid>
                 <Grid
@@ -749,7 +787,7 @@
                         x:Name="cmbAllowInsecure"
                         Grid.Row="4"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         Classes="Margin8" />
                 </Grid>
                 <Grid
diff --git a/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs b/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs
index 7e2fba9a..f44d3926 100644
--- a/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs
@@ -208,7 +208,8 @@ namespace v2rayN.Desktop.Views
                 this.Bind(ViewModel, vm => vm.SelectedSource.HeaderType, v => v.cmbHeaderType.SelectedValue).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SelectedSource.RequestHost, v => v.txtRequestHost.Text).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SelectedSource.Path, v => v.txtPath.Text).DisposeWith(disposables);
-
+                this.Bind(ViewModel, vm => vm.SelectedSource.Extra, v => v.txtExtra.Text).DisposeWith(disposables);
+                
                 this.Bind(ViewModel, vm => vm.SelectedSource.StreamSecurity, v => v.cmbStreamSecurity.SelectedValue).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SelectedSource.Sni, v => v.txtSNI.Text).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SelectedSource.AllowInsecure, v => v.cmbAllowInsecure.SelectedValue).DisposeWith(disposables);
@@ -326,6 +327,7 @@ namespace v2rayN.Desktop.Views
                 network = Global.DefaultNetwork;
             }
             labHeaderType.IsVisible = true;
+            btnExtra.IsVisible = false;
             tipRequestHost.Text =
             tipPath.Text =
             tipHeaderType.Text = string.Empty;
@@ -354,6 +356,7 @@ namespace v2rayN.Desktop.Views
                     tipPath.Text = ResUI.TransportPathTip1;
                     tipHeaderType.Text = ResUI.TransportHeaderTypeTip5;
                     labHeaderType.IsVisible = false;
+                    btnExtra.IsVisible = true;
                     break;
 
                 case nameof(ETransport.h2):
diff --git a/v2rayN/v2rayN/Views/AddServerWindow.xaml b/v2rayN/v2rayN/Views/AddServerWindow.xaml
index bbec6703..c0f15fed 100644
--- a/v2rayN/v2rayN/Views/AddServerWindow.xaml
+++ b/v2rayN/v2rayN/Views/AddServerWindow.xaml
@@ -17,6 +17,13 @@
     Style="{StaticResource WindowGlobal}"
     WindowStartupLocation="CenterScreen"
     mc:Ignorable="d">
+    <Window.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Popupbox.xaml" />
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </Window.Resources>
     <DockPanel Margin="{StaticResource Margin8}">
         <StackPanel
             Margin="{StaticResource Margin4}"
@@ -128,7 +135,7 @@
                         x:Name="txtPort"
                         Grid.Row="3"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         Margin="{StaticResource Margin4}"
                         HorizontalAlignment="Left"
                         Style="{StaticResource DefTextBox}" />
@@ -188,7 +195,7 @@
                         x:Name="txtAlterId"
                         Grid.Row="2"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         Margin="{StaticResource Margin4}"
                         HorizontalAlignment="Left"
                         Style="{StaticResource DefTextBox}" />
@@ -513,7 +520,7 @@
                         x:Name="cmbHeaderType8"
                         Grid.Row="3"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         Margin="{StaticResource Margin4}"
                         Style="{StaticResource DefComboBox}" />
                 </Grid>
@@ -606,7 +613,7 @@
                         x:Name="txtShortId9"
                         Grid.Row="5"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         Margin="{StaticResource Margin4}"
                         HorizontalAlignment="Left"
                         Style="{StaticResource DefTextBox}" />
@@ -653,7 +660,7 @@
                         x:Name="cmbNetwork"
                         Grid.Row="1"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         Margin="{StaticResource Margin4}"
                         Style="{StaticResource DefComboBox}" />
                     <TextBlock
@@ -672,13 +679,40 @@
                         VerticalAlignment="Center"
                         Style="{StaticResource ToolbarTextBlock}"
                         Text="{x:Static resx:ResUI.TbHeaderType}" />
-                    <ComboBox
-                        x:Name="cmbHeaderType"
+                    <StackPanel
                         Grid.Row="2"
                         Grid.Column="1"
-                        Width="100"
-                        Margin="{StaticResource Margin4}"
-                        Style="{StaticResource DefComboBox}" />
+                        VerticalAlignment="Center"
+                        Orientation="Horizontal">
+                        <ComboBox
+                            x:Name="cmbHeaderType"
+                            Width="200"
+                            Margin="{StaticResource Margin4}"
+                            Style="{StaticResource DefComboBox}" />
+
+                        <materialDesign:PopupBox
+                            x:Name="popExtra"
+                            HorizontalAlignment="Right"
+                            StaysOpen="True"
+                            Style="{StaticResource MaterialDesignToolForegroundPopupBox}">
+                            <StackPanel>
+                                <TextBlock
+                                    Margin="{StaticResource Margin4}"
+                                    VerticalAlignment="Center"
+                                    Style="{StaticResource ToolbarTextBlock}"
+                                    Text="{x:Static resx:ResUI.TransportExtraTip}" />
+                                <TextBox
+                                    x:Name="txtExtra"
+                                    Width="400"
+                                    Margin="{StaticResource Margin4}"
+                                    VerticalAlignment="Top"
+                                    AcceptsReturn="True"
+                                    MinLines="6"
+                                    Style="{StaticResource MyOutlinedTextBox}"
+                                    TextWrapping="Wrap" />
+                            </StackPanel>
+                        </materialDesign:PopupBox>
+                    </StackPanel>
                     <TextBlock
                         x:Name="tipHeaderType"
                         Grid.Row="2"
@@ -764,7 +798,7 @@
                         x:Name="cmbStreamSecurity"
                         Grid.Row="0"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         Margin="{StaticResource Margin4}"
                         Style="{StaticResource DefComboBox}" />
                 </Grid>
@@ -842,7 +876,7 @@
                         x:Name="cmbAllowInsecure"
                         Grid.Row="4"
                         Grid.Column="1"
-                        Width="100"
+                        Width="200"
                         Margin="{StaticResource Margin4}"
                         Style="{StaticResource DefComboBox}" />
                 </Grid>
diff --git a/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs b/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs
index 24c8d637..3d5985a4 100644
--- a/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs
@@ -202,7 +202,8 @@ namespace v2rayN.Views
                 this.Bind(ViewModel, vm => vm.SelectedSource.HeaderType, v => v.cmbHeaderType.Text).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SelectedSource.RequestHost, v => v.txtRequestHost.Text).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SelectedSource.Path, v => v.txtPath.Text).DisposeWith(disposables);
-
+                this.Bind(ViewModel, vm => vm.SelectedSource.Extra, v => v.txtExtra.Text).DisposeWith(disposables);
+                
                 this.Bind(ViewModel, vm => vm.SelectedSource.StreamSecurity, v => v.cmbStreamSecurity.Text).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SelectedSource.Sni, v => v.txtSNI.Text).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SelectedSource.AllowInsecure, v => v.cmbAllowInsecure.Text).DisposeWith(disposables);
@@ -321,6 +322,7 @@ namespace v2rayN.Views
                 network = Global.DefaultNetwork;
             }
             labHeaderType.Visibility = Visibility.Visible;
+            popExtra.Visibility = Visibility.Hidden;
             tipRequestHost.Text =
             tipPath.Text =
             tipHeaderType.Text = string.Empty;
@@ -349,6 +351,7 @@ namespace v2rayN.Views
                     tipPath.Text = ResUI.TransportPathTip1;
                     tipHeaderType.Text = ResUI.TransportHeaderTypeTip5;
                     labHeaderType.Visibility = Visibility.Hidden;
+                    popExtra.Visibility = Visibility.Visible;
                     break;
 
                 case nameof(ETransport.h2):