diff --git a/v2rayN/ServiceLib/Handler/Fmt/TuicFmt.cs b/v2rayN/ServiceLib/Handler/Fmt/TuicFmt.cs
index 56f78ea9..d1f802b0 100644
--- a/v2rayN/ServiceLib/Handler/Fmt/TuicFmt.cs
+++ b/v2rayN/ServiceLib/Handler/Fmt/TuicFmt.cs
@@ -30,7 +30,10 @@ public class TuicFmt : BaseFmt
 
         var query = Utils.ParseQueryString(url.Query);
         ResolveUriQuery(query, ref item);
-        item.HeaderType = GetQueryValue(query, "congestion_control");
+        item.SetProtocolExtra(item.GetProtocolExtra() with
+        {
+            CongestionControl = GetQueryValue(query, "congestion_control")
+        });
 
         return item;
     }
@@ -51,7 +54,10 @@ public class TuicFmt : BaseFmt
         var dicQuery = new Dictionary<string, string>();
         ToUriQueryLite(item, ref dicQuery);
 
-        dicQuery.Add("congestion_control", item.HeaderType);
+        if (!item.GetProtocolExtra().CongestionControl.IsNullOrEmpty())
+        {
+            dicQuery.Add("congestion_control", item.GetProtocolExtra().CongestionControl);
+        }
 
         return ToUri(EConfigType.TUIC, item.Address, item.Port, $"{item.Username ?? ""}:{item.Password}", dicQuery, remark);
     }
diff --git a/v2rayN/ServiceLib/Manager/AppManager.cs b/v2rayN/ServiceLib/Manager/AppManager.cs
index e773c2ef..0caf89b9 100644
--- a/v2rayN/ServiceLib/Manager/AppManager.cs
+++ b/v2rayN/ServiceLib/Manager/AppManager.cs
@@ -281,12 +281,11 @@ public sealed class AppManager
         return await SQLiteHelper.Instance.TableAsync<FullConfigTemplateItem>().FirstOrDefaultAsync(it => it.CoreType == eCoreType);
     }
 
+#pragma warning disable CS0618
     public async Task MigrateProfileExtra()
     {
         await MigrateProfileExtraGroup();
 
-#pragma warning disable CS0618
-
         const int pageSize = 100;
         var offset = 0;
 
@@ -310,7 +309,6 @@ public sealed class AppManager
         }
 
         //await ProfileGroupItemManager.Instance.ClearAll();
-#pragma warning restore CS0618
     }
 
     private async Task<int> MigrateProfileExtraSub(List<ProfileItem> batch)
@@ -356,6 +354,7 @@ public sealed class AppManager
                         break;
 
                     case EConfigType.TUIC:
+                        extra = extra with { CongestionControl = item.HeaderType.NullIfEmpty(), };
                         item.Username = item.Id;
                         item.Id = item.Security;
                         item.Password = item.Security;
@@ -412,7 +411,6 @@ public sealed class AppManager
 
     private async Task<bool> MigrateProfileExtraGroup()
     {
-#pragma warning disable CS0618
         var list = await SQLiteHelper.Instance.TableAsync<ProfileGroupItem>().ToListAsync();
         var groupItems = new ConcurrentDictionary<string, ProfileGroupItem>(list.Where(t => !string.IsNullOrEmpty(t.IndexId)).ToDictionary(t => t.IndexId!));
 
@@ -477,8 +475,8 @@ public sealed class AppManager
         return true;
 
         //await ProfileGroupItemManager.Instance.ClearAll();
-#pragma warning restore CS0618
     }
+#pragma warning restore CS0618
 
     #endregion SqliteHelper
 
diff --git a/v2rayN/ServiceLib/Models/ProtocolExtraItem.cs b/v2rayN/ServiceLib/Models/ProtocolExtraItem.cs
index a768ba80..a76bad45 100644
--- a/v2rayN/ServiceLib/Models/ProtocolExtraItem.cs
+++ b/v2rayN/ServiceLib/Models/ProtocolExtraItem.cs
@@ -2,6 +2,9 @@ namespace ServiceLib.Models;
 
 public record ProtocolExtraItem
 {
+    public bool? Uot { get; init; }
+    public string? CongestionControl { get; init; }
+
     // vmess
     public string? AlterId { get; init; }
     public string? VmessSecurity { get; init; }
diff --git a/v2rayN/ServiceLib/Models/SingboxConfig.cs b/v2rayN/ServiceLib/Models/SingboxConfig.cs
index 02deaabf..75eef8d7 100644
--- a/v2rayN/ServiceLib/Models/SingboxConfig.cs
+++ b/v2rayN/ServiceLib/Models/SingboxConfig.cs
@@ -133,6 +133,7 @@ public class Outbound4Sbox : BaseServer4Sbox
     public int? recv_window_conn { get; set; }
     public int? recv_window { get; set; }
     public bool? disable_mtu_discovery { get; set; }
+    public bool? udp_over_tcp { get; set; }
     public string? method { get; set; }
     public string? username { get; set; }
     public string? password { get; set; }
diff --git a/v2rayN/ServiceLib/Models/V2rayConfig.cs b/v2rayN/ServiceLib/Models/V2rayConfig.cs
index 80baf43b..37ad555e 100644
--- a/v2rayN/ServiceLib/Models/V2rayConfig.cs
+++ b/v2rayN/ServiceLib/Models/V2rayConfig.cs
@@ -179,6 +179,8 @@ public class ServersItem4Ray
 
     public string flow { get; set; }
 
+    public bool? uot { get; set; }
+
     public List<SocksUsersItem4Ray> users { get; set; }
 }
 
diff --git a/v2rayN/ServiceLib/Resx/ResUI.Designer.cs b/v2rayN/ServiceLib/Resx/ResUI.Designer.cs
index 8f798007..d56e6446 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.Designer.cs
+++ b/v2rayN/ServiceLib/Resx/ResUI.Designer.cs
@@ -4455,6 +4455,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 UDP over TCP 的本地化字符串。
+        /// </summary>
+        public static string TbUot {
+            get {
+                return ResourceManager.GetString("TbUot", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Validate Regional Domain IPs 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 9aba2fed..6a2e591a 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.fa-Ir.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.fa-Ir.resx
@@ -1668,4 +1668,7 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbFinalmask" xml:space="preserve">
     <value>Finalmask</value>
   </data>
+  <data name="TbUot" xml:space="preserve">
+    <value>UDP over TCP</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/v2rayN/ServiceLib/Resx/ResUI.fr.resx b/v2rayN/ServiceLib/Resx/ResUI.fr.resx
index 3dfbcc09..df2959a0 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.fr.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.fr.resx
@@ -1665,4 +1665,7 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbFinalmask" xml:space="preserve">
     <value>Finalmask</value>
   </data>
+  <data name="TbUot" xml:space="preserve">
+    <value>UDP over TCP</value>
+  </data>
 </root>
diff --git a/v2rayN/ServiceLib/Resx/ResUI.hu.resx b/v2rayN/ServiceLib/Resx/ResUI.hu.resx
index e69a0a54..004f4eea 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.hu.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.hu.resx
@@ -1668,4 +1668,7 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbFinalmask" xml:space="preserve">
     <value>Finalmask</value>
   </data>
+  <data name="TbUot" xml:space="preserve">
+    <value>UDP over TCP</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/v2rayN/ServiceLib/Resx/ResUI.resx b/v2rayN/ServiceLib/Resx/ResUI.resx
index cc304154..f1b2fa99 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.resx
@@ -1668,4 +1668,7 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbFinalmask" xml:space="preserve">
     <value>Finalmask</value>
   </data>
+  <data name="TbUot" xml:space="preserve">
+    <value>UDP over TCP</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 6f093f72..768af4d0 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.ru.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.ru.resx
@@ -1668,4 +1668,7 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbFinalmask" xml:space="preserve">
     <value>Finalmask</value>
   </data>
+  <data name="TbUot" xml:space="preserve">
+    <value>UDP over TCP</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 c0f8665d..e28d2b47 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx
@@ -1665,4 +1665,7 @@
   <data name="TbFinalmask" xml:space="preserve">
     <value>Finalmask</value>
   </data>
+  <data name="TbUot" xml:space="preserve">
+    <value>UDP over TCP</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 9002c3af..35034a9a 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx
@@ -1665,4 +1665,7 @@
   <data name="TbFinalmask" xml:space="preserve">
     <value>Finalmask</value>
   </data>
+  <data name="TbUot" xml:space="preserve">
+    <value>UDP over TCP</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs
index b30c9c48..29754b02 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs
@@ -112,6 +112,7 @@ public partial class CoreConfigSingboxService
                         outbound.method = AppManager.Instance.GetShadowsocksSecurities(_node).Contains(protocolExtra.SsMethod)
                             ? protocolExtra.SsMethod : Global.None;
                         outbound.password = _node.Password;
+                        outbound.udp_over_tcp = protocolExtra.Uot == true ? true : null;
 
                         if (_node.Network == nameof(ETransport.tcp) && _node.HeaderType == Global.TcpHeaderHttp)
                         {
@@ -269,7 +270,7 @@ public partial class CoreConfigSingboxService
                     {
                         outbound.uuid = _node.Username;
                         outbound.password = _node.Password;
-                        outbound.congestion_control = _node.HeaderType;
+                        outbound.congestion_control = protocolExtra.CongestionControl;
                         break;
                     }
                 case EConfigType.Anytls:
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs
index c8862648..853ada7f 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs
@@ -153,6 +153,7 @@ public partial class CoreConfigV2rayService
                         serversItem.password = _node.Password;
                         serversItem.method = AppManager.Instance.GetShadowsocksSecurities(_node).Contains(protocolExtra.SsMethod)
                             ? protocolExtra.SsMethod : "none";
+                        serversItem.uot = protocolExtra.Uot == true ? true : null;
 
                         serversItem.ota = false;
                         serversItem.level = 1;
diff --git a/v2rayN/ServiceLib/ViewModels/AddServerViewModel.cs b/v2rayN/ServiceLib/ViewModels/AddServerViewModel.cs
index f56bb1c0..a786580c 100644
--- a/v2rayN/ServiceLib/ViewModels/AddServerViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/AddServerViewModel.cs
@@ -61,6 +61,12 @@ public class AddServerViewModel : MyReactiveObject
     [Reactive]
     public int WgMtu { get; set; }
 
+    [Reactive]
+    public bool Uot { get; set; }
+
+    [Reactive]
+    public string CongestionControl { get; set; }
+
     public ReactiveCommand<Unit, Unit> FetchCertCmd { get; }
     public ReactiveCommand<Unit, Unit> FetchCertChainCmd { get; }
     public ReactiveCommand<Unit, Unit> SaveCmd { get; }
@@ -123,6 +129,8 @@ public class AddServerViewModel : MyReactiveObject
         WgInterfaceAddress = protocolExtra?.WgInterfaceAddress ?? string.Empty;
         WgReserved = protocolExtra?.WgReserved ?? string.Empty;
         WgMtu = protocolExtra?.WgMtu ?? 1280;
+        Uot = protocolExtra?.Uot ?? false;
+        CongestionControl = protocolExtra?.CongestionControl ?? string.Empty;
     }
 
     private async Task SaveServerAsync()
@@ -185,6 +193,8 @@ public class AddServerViewModel : MyReactiveObject
             WgInterfaceAddress = WgInterfaceAddress.NullIfEmpty(),
             WgReserved = WgReserved.NullIfEmpty(),
             WgMtu = WgMtu >= 576 ? WgMtu : null,
+            Uot = Uot ? true : null,
+            CongestionControl = CongestionControl.NullIfEmpty(),
         });
 
         if (await ConfigHandler.AddServer(_config, SelectedSource) == 0)
diff --git a/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml b/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml
index 477eca5d..2a1cd63f 100644
--- a/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml
+++ b/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml
@@ -197,6 +197,19 @@
                         Width="300"
                         Margin="{StaticResource Margin4}" />
 
+                    <TextBlock
+                        Grid.Row="3"
+                        Grid.Column="0"
+                        Margin="{StaticResource Margin4}"
+                        VerticalAlignment="Center"
+                        Text="{x:Static resx:ResUI.TbUot}" />
+                    <ToggleSwitch
+                        x:Name="togUotEnabled3"
+                        Grid.Row="3"
+                        Grid.Column="1"
+                        Margin="{StaticResource Margin4}"
+                        HorizontalAlignment="Left" />
+
                     <TextBlock
                         Grid.Row="4"
                         Grid.Column="0"
diff --git a/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs b/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs
index fdd097b2..b0143607 100644
--- a/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs
@@ -122,6 +122,7 @@ public partial class AddServerWindow : WindowBase<AddServerViewModel>
                 case EConfigType.Shadowsocks:
                     this.Bind(ViewModel, vm => vm.SelectedSource.Password, v => v.txtId3.Text).DisposeWith(disposables);
                     this.Bind(ViewModel, vm => vm.SsMethod, v => v.cmbSecurity3.SelectedValue).DisposeWith(disposables);
+                    this.Bind(ViewModel, vm => vm.Uot, v => v.togUotEnabled3.IsChecked).DisposeWith(disposables);
                     this.Bind(ViewModel, vm => vm.SelectedSource.MuxEnabled, v => v.togmuxEnabled3.IsChecked).DisposeWith(disposables);
                     break;
 
@@ -156,7 +157,7 @@ public partial class AddServerWindow : WindowBase<AddServerViewModel>
                 case EConfigType.TUIC:
                     this.Bind(ViewModel, vm => vm.SelectedSource.Username, v => v.txtId8.Text).DisposeWith(disposables);
                     this.Bind(ViewModel, vm => vm.SelectedSource.Password, v => v.txtSecurity8.Text).DisposeWith(disposables);
-                    this.Bind(ViewModel, vm => vm.SelectedSource.HeaderType, v => v.cmbHeaderType8.SelectedValue).DisposeWith(disposables);
+                    this.Bind(ViewModel, vm => vm.CongestionControl, v => v.cmbHeaderType8.SelectedValue).DisposeWith(disposables);
                     break;
 
                 case EConfigType.WireGuard:
diff --git a/v2rayN/v2rayN/Views/AddServerWindow.xaml b/v2rayN/v2rayN/Views/AddServerWindow.xaml
index e78e7f9b..50641332 100644
--- a/v2rayN/v2rayN/Views/AddServerWindow.xaml
+++ b/v2rayN/v2rayN/Views/AddServerWindow.xaml
@@ -277,6 +277,20 @@
                         Margin="{StaticResource Margin4}"
                         Style="{StaticResource DefComboBox}" />
 
+                    <TextBlock
+                        Grid.Row="3"
+                        Grid.Column="0"
+                        Margin="{StaticResource Margin4}"
+                        VerticalAlignment="Center"
+                        Style="{StaticResource ToolbarTextBlock}"
+                        Text="{x:Static resx:ResUI.TbUot}" />
+                    <ToggleButton
+                        x:Name="togUotEnabled3"
+                        Grid.Row="3"
+                        Grid.Column="1"
+                        Margin="{StaticResource Margin4}"
+                        HorizontalAlignment="Left" />
+
                     <TextBlock
                         Grid.Row="4"
                         Grid.Column="0"
diff --git a/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs b/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs
index 4875afa5..5458fb7c 100644
--- a/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs
@@ -117,6 +117,7 @@ public partial class AddServerWindow
                 case EConfigType.Shadowsocks:
                     this.Bind(ViewModel, vm => vm.SelectedSource.Password, v => v.txtId3.Text).DisposeWith(disposables);
                     this.Bind(ViewModel, vm => vm.SsMethod, v => v.cmbSecurity3.Text).DisposeWith(disposables);
+                    this.Bind(ViewModel, vm => vm.Uot, v => v.togUotEnabled3.IsChecked).DisposeWith(disposables);
                     this.Bind(ViewModel, vm => vm.SelectedSource.MuxEnabled, v => v.togmuxEnabled3.IsChecked).DisposeWith(disposables);
                     break;
 
@@ -151,7 +152,7 @@ public partial class AddServerWindow
                 case EConfigType.TUIC:
                     this.Bind(ViewModel, vm => vm.SelectedSource.Username, v => v.txtId8.Text).DisposeWith(disposables);
                     this.Bind(ViewModel, vm => vm.SelectedSource.Password, v => v.txtSecurity8.Text).DisposeWith(disposables);
-                    this.Bind(ViewModel, vm => vm.SelectedSource.HeaderType, v => v.cmbHeaderType8.Text).DisposeWith(disposables);
+                    this.Bind(ViewModel, vm => vm.CongestionControl, v => v.cmbHeaderType8.Text).DisposeWith(disposables);
                     break;
 
                 case EConfigType.WireGuard: