diff --git a/XplorePlane/ViewModels/Cnc/CncEditorViewModel.cs b/XplorePlane/ViewModels/Cnc/CncEditorViewModel.cs
index 61a3cdb..b870f77 100644
--- a/XplorePlane/ViewModels/Cnc/CncEditorViewModel.cs
+++ b/XplorePlane/ViewModels/Cnc/CncEditorViewModel.cs
@@ -33,6 +33,7 @@ namespace XplorePlane.ViewModels.Cnc
         private CncNodeViewModel _selectedNode;
         private bool _isModified;
         private string _programName;
+        private string _programDisplayName = "NewCncProgram";
         private Guid? _preferredSelectedNodeId;
 
         public CncEditorViewModel(
@@ -110,6 +111,12 @@ namespace XplorePlane.ViewModels.Cnc
             set => SetProperty(ref _programName, value);
         }
 
+        public string ProgramDisplayName
+        {
+            get => _programDisplayName;
+            private set => SetProperty(ref _programDisplayName, value);
+        }
+
         public DelegateCommand InsertReferencePointCommand { get; }
         public DelegateCommand InsertSaveNodeWithImageCommand { get; }
         public DelegateCommand InsertSaveNodeCommand { get; }
@@ -256,6 +263,7 @@ namespace XplorePlane.ViewModels.Cnc
                     return;
 
                 await _cncProgramService.SaveAsync(_currentProgram, dlg.FileName);
+                ProgramDisplayName = Path.GetFileName(dlg.FileName);
                 IsModified = false;
             }
             catch (Exception ex)
@@ -280,6 +288,7 @@ namespace XplorePlane.ViewModels.Cnc
 
                 _currentProgram = await _cncProgramService.LoadAsync(dlg.FileName);
                 ProgramName = _currentProgram.Name;
+                ProgramDisplayName = Path.GetFileName(dlg.FileName);
                 IsModified = false;
                 RefreshNodes();
             }
@@ -294,6 +303,7 @@ namespace XplorePlane.ViewModels.Cnc
             var name = string.IsNullOrWhiteSpace(ProgramName) ? "NewCncProgram" : ProgramName;
             _currentProgram = _cncProgramService.CreateProgram(name);
             ProgramName = _currentProgram.Name;
+            ProgramDisplayName = FormatProgramDisplayName(_currentProgram.Name);
             IsModified = false;
             RefreshNodes();
         }
@@ -622,5 +632,11 @@ namespace XplorePlane.ViewModels.Cnc
                 .GetEvent<CncProgramChangedEvent>()
                 .Publish(new CncProgramChangedPayload(ProgramName ?? string.Empty, IsModified));
         }
+
+        private static string FormatProgramDisplayName(string programName)
+        {
+            var name = string.IsNullOrWhiteSpace(programName) ? "NewCncProgram" : programName;
+            return name.EndsWith(".xp", StringComparison.OrdinalIgnoreCase) ? name : $"{name}.xp";
+        }
     }
 }
diff --git a/XplorePlane/Views/Cnc/CncPageView.xaml b/XplorePlane/Views/Cnc/CncPageView.xaml
index 975b87d..1b86e33 100644
--- a/XplorePlane/Views/Cnc/CncPageView.xaml
+++ b/XplorePlane/Views/Cnc/CncPageView.xaml
@@ -106,14 +106,14 @@
                             FontFamily="{StaticResource UiFont}"
                             FontSize="13"
                             FontWeight="SemiBold"
-                            Text="{Binding ProgramName, TargetNullValue=CNC编辑}"
+                            Text="{Binding ProgramDisplayName, TargetNullValue=CNC编辑}"
                             TextWrapping="Wrap" />
                         <TextBlock
                             Margin="0,3,0,0"
                             FontFamily="{StaticResource UiFont}"
                             FontSize="10"
                             Foreground="#666666"
-                            Text="保存位置节点下会自动显示检测标记和检测模块，清晰表达当前检测位置与检测内容的父子关系。"
+                            Text="新建或加载已有的CNC检测程序，后缀.xp。"
                             TextWrapping="Wrap" />
                     </StackPanel>
                 </Border>
@@ -125,6 +125,7 @@
                     Background="Transparent"
                     BorderThickness="0"
                     ItemsSource="{Binding TreeNodes}"
+                    PreviewKeyDown="CncTreeView_PreviewKeyDown"
                     SelectedItemChanged="CncTreeView_SelectedItemChanged">
                     <TreeView.Resources>
                         <HierarchicalDataTemplate DataType="{x:Type vm:CncNodeViewModel}" ItemsSource="{Binding Children}">
@@ -204,32 +205,6 @@
                                         VerticalAlignment="Center"
                                         Orientation="Horizontal"
                                         Visibility="Collapsed">
-                                        <Button
-                                            Width="20"
-                                            Height="20"
-                                            Margin="1,0"
-                                            Background="White"
-                                            BorderBrush="#CDCBCB"
-                                            BorderThickness="1"
-                                            Command="{Binding DataContext.MoveNodeUpCommand, RelativeSource={RelativeSource AncestorType=TreeView}}"
-                                            CommandParameter="{Binding}"
-                                            Content="↑"
-                                            Cursor="Hand"
-                                            FontSize="10"
-                                            ToolTip="上移" />
-                                        <Button
-                                            Width="20"
-                                            Height="20"
-                                            Margin="1,0"
-                                            Background="White"
-                                            BorderBrush="#CDCBCB"
-                                            BorderThickness="1"
-                                            Command="{Binding DataContext.MoveNodeDownCommand, RelativeSource={RelativeSource AncestorType=TreeView}}"
-                                            CommandParameter="{Binding}"
-                                            Content="↓"
-                                            Cursor="Hand"
-                                            FontSize="10"
-                                            ToolTip="下移" />
                                         <Button
                                             Width="20"
                                             Height="20"
diff --git a/XplorePlane/Views/Cnc/CncPageView.xaml.cs b/XplorePlane/Views/Cnc/CncPageView.xaml.cs
index 77ed0d1..2d1eb05 100644
--- a/XplorePlane/Views/Cnc/CncPageView.xaml.cs
+++ b/XplorePlane/Views/Cnc/CncPageView.xaml.cs
@@ -4,6 +4,7 @@ using System.Globalization;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Data;
+using System.Windows.Input;
 using XP.Common.Logging.Interfaces;
 using XplorePlane.Services;
 using XplorePlane.ViewModels.Cnc;
@@ -70,6 +71,18 @@ namespace XplorePlane.Views.Cnc
                 viewModel.SelectedNode = e.NewValue as CncNodeViewModel;
             }
         }
+
+        private void CncTreeView_PreviewKeyDown(object sender, KeyEventArgs e)
+        {
+            if (e.Key != Key.Delete || DataContext is not CncEditorViewModel viewModel)
+                return;
+
+            if (!viewModel.DeleteNodeCommand.CanExecute())
+                return;
+
+            viewModel.DeleteNodeCommand.Execute();
+            e.Handled = true;
+        }
     }
 
     public class NullToVisibilityConverter : IValueConverter