diff --git a/BetterGenshinImpact/Core/Config/MaskWindowConfig.cs b/BetterGenshinImpact/Core/Config/MaskWindowConfig.cs
index 98cfccd1..49143e8b 100644
--- a/BetterGenshinImpact/Core/Config/MaskWindowConfig.cs
+++ b/BetterGenshinImpact/Core/Config/MaskWindowConfig.cs
@@ -63,13 +63,6 @@ public partial class MaskWindowConfig : ObservableObject
     [ObservableProperty]
     private bool _showFps = false;
 
-    /// <summary>
-    /// 作为原神子窗体
-    /// 有些bug没解决
-    /// </summary>
-    [ObservableProperty]
-    private bool _useSubform = false;
-
     /// <summary>
     /// 遮罩文本透明度 (0.0-1.0)
     /// </summary>
diff --git a/BetterGenshinImpact/GameTask/TaskTriggerDispatcher.cs b/BetterGenshinImpact/GameTask/TaskTriggerDispatcher.cs
index f274c93a..41e7e5f8 100644
--- a/BetterGenshinImpact/GameTask/TaskTriggerDispatcher.cs
+++ b/BetterGenshinImpact/GameTask/TaskTriggerDispatcher.cs
@@ -1,4 +1,4 @@
-using BetterGenshinImpact.Core.Config;
+using BetterGenshinImpact.Core.Config;
 using BetterGenshinImpact.GameTask.Common;
 using BetterGenshinImpact.Helpers;
 using BetterGenshinImpact.View;
@@ -259,14 +259,11 @@ namespace BetterGenshinImpact.GameTask
                         Debug.WriteLine("游戏窗口不在前台, 不再进行截屏");
                     }
 
-                    if (!TaskContext.Instance().Config.MaskWindowConfig.UseSubform)
+                    var pName = SystemControl.GetActiveProcessName();
+                    if (pName != "Idle" && pName != "BetterGI" && pName != "YuanShen" && pName != "GenshinImpact" && pName != "Genshin Impact Cloud Game")
                     {
-                        var pName = SystemControl.GetActiveProcessName();
-                        if (pName != "Idle" && pName != "BetterGI" && pName != "YuanShen" && pName != "GenshinImpact" && pName != "Genshin Impact Cloud Game")
-                        {
-                            // Debug.WriteLine(pName + "：hide mask window");
-                            maskWindow.Invoke(() => { maskWindow.HideSelf(); });
-                        }
+                        // Debug.WriteLine(pName + "：hide mask window");
+                        maskWindow.Invoke(() => { maskWindow.HideSelf(); });
                     }
 
                     _prevGameActive = active;
@@ -302,23 +299,20 @@ namespace BetterGenshinImpact.GameTask
                 else
                 {
                     PictureInPictureService.Hide(resetManual: true);
-                    if (!TaskContext.Instance().Config.MaskWindowConfig.UseSubform)
+                    // if (!_prevGameActive)
+                    // {
+                    maskWindow.Invoke(() =>
                     {
-                        // if (!_prevGameActive)
-                        // {
-                        maskWindow.Invoke(() =>
+                        if (maskWindow.IsExist())
                         {
-                            if (maskWindow.IsExist())
+                            maskWindow.Show();
+                            if (!_prevGameActive)
                             {
-                                maskWindow.Show();
-                                if (!_prevGameActive)
-                                {
-                                    maskWindow.BringToTop();
-                                }
+                                maskWindow.BringToTop();
                             }
-                        });
-                        // }
-                    }
+                        }
+                    });
+                    // }
 
                     _prevGameActive = active;
                     // // 移动游戏窗口的时候同步遮罩窗口的位置,此时不进行捕获
@@ -528,4 +522,4 @@ namespace BetterGenshinImpact.GameTask
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/BetterGenshinImpact/View/MaskWindow.xaml.cs b/BetterGenshinImpact/View/MaskWindow.xaml.cs
index ba5d0e9b..26d3c830 100644
--- a/BetterGenshinImpact/View/MaskWindow.xaml.cs
+++ b/BetterGenshinImpact/View/MaskWindow.xaml.cs
@@ -43,7 +43,6 @@ public partial class MaskWindow : Window
     private static readonly Typeface _typeface;
     private static readonly Typeface _fgiTypeface;
 
-    private nint _hWnd;
     private MaskWindowViewModel? _viewModel;
 
     private IRichTextBox? _richTextBox;
@@ -104,14 +103,7 @@ public partial class MaskWindow : Window
 
     public void RefreshPosition()
     {
-        if (TaskContext.Instance().Config.MaskWindowConfig.UseSubform)
-        {
-            RefreshPositionForSubform();
-        }
-        else
-        {
-            RefreshPositionForNormal();
-        }
+        RefreshPositionForNormal();
     }
 
     public void RefreshPositionForNormal()
@@ -130,13 +122,6 @@ public partial class MaskWindow : Window
         });
     }
 
-    public void RefreshPositionForSubform()
-    {
-        nint targetHWnd = TaskContext.Instance().GameHandle;
-        _ = User32.GetClientRect(targetHWnd, out RECT targetRect);
-        _ = User32.SetWindowPos(_hWnd, IntPtr.Zero, 0, 0, targetRect.Width, targetRect.Height, User32.SetWindowPosFlags.SWP_SHOWWINDOW);
-    }
-
     public MaskWindow()
     {
         _maskWindow = this;
@@ -204,17 +189,6 @@ public partial class MaskWindow : Window
 
         UpdateClickThroughState();
 
-        if (TaskContext.Instance().Config.MaskWindowConfig.UseSubform)
-        {
-            _hWnd = new WindowInteropHelper(this).Handle;
-            nint targetHWnd = TaskContext.Instance().GameHandle;
-
-            if (User32.GetParent(_hWnd) != targetHWnd)
-            {
-                _ = User32.SetParent(_hWnd, targetHWnd);
-            }
-        }
-
         RefreshPosition();
         PrintSystemInfo();
         if (_viewModel != null)
diff --git a/BetterGenshinImpact/View/Pages/CommonSettingsPage.xaml b/BetterGenshinImpact/View/Pages/CommonSettingsPage.xaml
index 578bb8a4..1f223a77 100644
--- a/BetterGenshinImpact/View/Pages/CommonSettingsPage.xaml
+++ b/BetterGenshinImpact/View/Pages/CommonSettingsPage.xaml
@@ -449,33 +449,6 @@
                                FontSize="14"
                                Text="{Binding Config.MaskWindowConfig.TextOpacity, StringFormat=F2}" />
                 </Grid>
-
-
-                <!--<Grid Margin="16">
-                    <Grid.RowDefinitions>
-                        <RowDefinition Height="Auto" />
-                        <RowDefinition Height="Auto" />
-                    </Grid.RowDefinitions>
-                    <Grid.ColumnDefinitions>
-                        <ColumnDefinition Width="*" />
-                        <ColumnDefinition Width="Auto" />
-                    </Grid.ColumnDefinitions>
-                    <ui:TextBlock Grid.Row="0"
-                                  Grid.Column="0"
-                                  FontTypography="Body"
-                                  Text="遮罩以原神子窗体方式启动（实验功能）"
-                                  TextWrapping="Wrap" />
-                    <ui:TextBlock Grid.Row="1"
-                                  Grid.Column="0"
-                                  Foreground="{ui:ThemeResource TextFillColorTertiaryBrush}"
-                                  Text="遮罩能够完全跟随窗体移动，但存在一些BUG，此配置重启后生效"
-                                  TextWrapping="Wrap" />
-                    <ui:ToggleSwitch Grid.Row="0"
-                                     Grid.RowSpan="2"
-                                     Grid.Column="1"
-                                     Margin="0,0,36,0"
-                                     IsChecked="{Binding Config.MaskWindowConfig.UseSubform, Mode=TwoWay}" />
-                </Grid>-->
             </StackPanel>
         </ui:CardExpander>