diff --git a/ADP/ViewModels/ShellViewModel.cs b/ADP/ViewModels/ShellViewModel.cs
index b656b16..f39b168 100644
--- a/ADP/ViewModels/ShellViewModel.cs
+++ b/ADP/ViewModels/ShellViewModel.cs
@@ -154,6 +154,24 @@ namespace ADP.ViewModels
         public ICommand MonitorValueSettingCommand { get; set; }
         public ICommand GetFileStringCommand { get; set; }
         public ICommand SilenceBuzzerCommand { get; set; }
+        public ICommand GoBackCommand { get; set; }
+        #endregion
+
+        #region 子程序导航
+
+        public bool CanGoBack =>
+            (CurrentContext?.MainNav.CanGoBack ?? false) ||
+            (CurrentContext?.ErrorNav.CanGoBack ?? false);
+
+        private void OnGoBack()
+        {
+            var ctx = CurrentContext;
+            if (ctx == null) return;
+            // 工具栏按钮同时重置两个 Tab 的导航
+            ctx.MainNav.Reset(ctx.Program, "主程序");
+            ctx.ErrorNav.Reset(ctx.Program, "错误程序");
+        }
+
         #endregion
 
         public ShellViewModel(IContainerProvider containerProvider)
@@ -188,6 +206,7 @@ namespace ADP.ViewModels
             MonitorValueSettingCommand = new DelegateCommand(MonitorValueSetting);
             GetFileStringCommand = new DelegateCommand(GetFileString);
             SilenceBuzzerCommand = new AsyncDelegateCommand(SilenceBuzzer);
+            GoBackCommand = new DelegateCommand(OnGoBack);
 
             _globalInfo.ContextDic.Add("default", new ScopedContext());
 
@@ -457,6 +476,9 @@ namespace ADP.ViewModels
 
             LoggerHelper.InfoWithNotify(runningScope, $"{_globalInfo.UserName} 执行工位 [{runningScope}] 复位命令");
 
+            // 重置导航栈，回到根程序界面
+            targetContext.ResetNavigation();
+
             _executionTasks.TryGetValue(runningScope, out var currentTask);
             _errorExecutionTasks.TryGetValue(runningScope, out var errorTask);
 
@@ -573,6 +595,7 @@ namespace ADP.ViewModels
             targetContext.Program.Parameters.Clear();
             targetContext.Program.StepCollection.Clear();
             targetContext.Program.ErrorStepCollection.Clear();
+            targetContext.ResetNavigation();
             foreach (var item in CurrentConfig.ParameterList)
             {
                 var param = CurrentConfig.SharedParameterList.FirstOrDefault(x => x.ParameterName == item.Name);
diff --git a/ADP/Views/ShellView.xaml b/ADP/Views/ShellView.xaml
index 88df17c..a1b0306 100644
--- a/ADP/Views/ShellView.xaml
+++ b/ADP/Views/ShellView.xaml
@@ -226,6 +226,16 @@ Command="{Binding GetFileStringCommand}">
                                      Foreground="Black" />
                                 </MenuItem.Icon>
                             </MenuItem>
+                            <Separator/>
+                            <!-- 返回上一级程序 -->
+                            <MenuItem Header="返回上一级程序"
+              Foreground="Black"
+              Command="{Binding GoBackCommand}">
+                                <MenuItem.Icon>
+                                    <materialDesign:PackIcon Kind="ArrowLeftBold"
+                                     Foreground="Black" />
+                                </MenuItem.Icon>
+                            </MenuItem>
                         </MenuItem>
                         <MenuItem Header="切换九宫格"
                                  FontSize="13"
diff --git a/TestingModule/ViewModels/CommandTreeViewModel.cs b/TestingModule/ViewModels/CommandTreeViewModel.cs
index 3fe6e04..af240e0 100644
--- a/TestingModule/ViewModels/CommandTreeViewModel.cs
+++ b/TestingModule/ViewModels/CommandTreeViewModel.cs
@@ -568,16 +568,35 @@ namespace TestingModule.ViewModels
         {
             // 查找最近的未匹配循环开始
             StepVM? lastUnmatchedLoopStart = null;
-            for (int i = Program.StepCollection.Count - 1; i >= 0; i--)
+            if (_ScopedContext.SelectedStepList == "主程序")
             {
-                if (Program.StepCollection[i].StepType == "循环开始")
+                for (int i = Program.StepCollection.Count - 1; i >= 0; i--)
                 {
-                    bool isMatched = Program.StepCollection.Any(s => s.StepType == "循环结束" && s.LoopStartStepId == Program.StepCollection[i].ID);
-
-                    if (!isMatched)
+                    if (Program.StepCollection[i].StepType == "循环开始")
                     {
-                        lastUnmatchedLoopStart = Program.StepCollection[i];
-                        break;
+                        bool isMatched = Program.StepCollection.Any(s => s.StepType == "循环结束" && s.LoopStartStepId == Program.StepCollection[i].ID);
+
+                        if (!isMatched)
+                        {
+                            lastUnmatchedLoopStart = Program.StepCollection[i];
+                            break;
+                        }
+                    }
+                }
+            }
+            else
+            {
+                for (int i = Program.ErrorStepCollection.Count - 1; i >= 0; i--)
+                {
+                    if (Program.ErrorStepCollection[i].StepType == "循环开始")
+                    {
+                        bool isMatched = Program.ErrorStepCollection.Any(s => s.StepType == "循环结束" && s.LoopStartStepId == Program.StepCollection[i].ID);
+
+                        if (!isMatched)
+                        {
+                            lastUnmatchedLoopStart = Program.ErrorStepCollection[i];
+                            break;
+                        }
                     }
                 }
             }
diff --git a/TestingModule/ViewModels/StepsManagerViewModel.cs b/TestingModule/ViewModels/StepsManagerViewModel.cs
index 23e7ad4..8df45a3 100644
--- a/TestingModule/ViewModels/StepsManagerViewModel.cs
+++ b/TestingModule/ViewModels/StepsManagerViewModel.cs
@@ -94,6 +94,29 @@ namespace TestingModule.ViewModels
         public ICommand DeleteStepCommand { get;set; }
         public ICommand TabSelectionChangedCommand { get;set; }
         public ICommand SelectionChangedCommand { get;set; }
+        public ICommand OpenSubProgramCommand { get; set; }
+        public ICommand GoBackCommand { get; set; }
+        #endregion
+
+        #region 子程序导航（主程序 / 错误程序各自独立）
+
+        // --- 主程序 Tab 导航属性 ---
+        public ProgramVM MainCurrentProgram => _ScopedContext.MainNav.CurrentProgram;
+        public string MainBreadcrumbPath => _ScopedContext.MainNav.BreadcrumbPath;
+        public bool MainCanGoBack => _ScopedContext.MainNav.CanGoBack;
+        public ObservableCollection<StepVM> MainDisplaySteps => _ScopedContext.MainNav.DisplaySteps;
+
+        // --- 错误程序 Tab 导航属性 ---
+        public ProgramVM ErrorCurrentProgram => _ScopedContext.ErrorNav.CurrentProgram;
+        public string ErrorBreadcrumbPath => _ScopedContext.ErrorNav.BreadcrumbPath;
+        public bool ErrorCanGoBack => _ScopedContext.ErrorNav.CanGoBack;
+        public ObservableCollection<StepVM> ErrorDisplaySteps => _ScopedContext.ErrorNav.DisplaySteps;
+
+        /// <summary>
+        /// 当前激活的导航状态（根据选中的 Tab 索引决定）
+        /// </summary>
+        private ProgramNavigationState ActiveNav => SelectedTabIndex == 1 ? _ScopedContext.ErrorNav : _ScopedContext.MainNav;
+
         #endregion
 
         public StepsManagerViewModel(IContainerProvider containerProvider, ScopedContext scopedContext, SystemConfig systemConfig, GlobalInfo globalInfo) : base(containerProvider)
@@ -108,9 +131,48 @@ namespace TestingModule.ViewModels
             DeleteStepCommand = new DelegateCommand(DeleteStep);
             TabSelectionChangedCommand = new DelegateCommand<string>(TabSelectionChanged);
             SelectionChangedCommand = new DelegateCommand<object>(SelectionChanged);
+            OpenSubProgramCommand = new DelegateCommand(OpenSubProgram);
+            GoBackCommand = new DelegateCommand(GoBack);
             SubscribeStepCollections();
             Program.PropertyChanged += Program_PropertyChanged;
             Admin = _globalInfo.IsAdmin;
+
+            // 初始化两套导航状态
+            _ScopedContext.MainNav.Initialize(Program, "主程序");
+            _ScopedContext.ErrorNav.Initialize(Program, "错误程序");
+
+            // 订阅主程序导航状态变化 → 转发给 UI
+            _ScopedContext.MainNav.PropertyChanged += (s, e) =>
+            {
+                if (e.PropertyName == nameof(ProgramNavigationState.CurrentProgram))
+                {
+                    RaisePropertyChanged(nameof(MainCurrentProgram));
+                    RaisePropertyChanged(nameof(MainDisplaySteps));
+                }
+                else if (e.PropertyName == nameof(ProgramNavigationState.BreadcrumbPath))
+                    RaisePropertyChanged(nameof(MainBreadcrumbPath));
+                else if (e.PropertyName == nameof(ProgramNavigationState.CanGoBack))
+                    RaisePropertyChanged(nameof(MainCanGoBack));
+            };
+
+            // 订阅错误程序导航状态变化 → 转发给 UI
+            _ScopedContext.ErrorNav.PropertyChanged += (s, e) =>
+            {
+                if (e.PropertyName == nameof(ProgramNavigationState.CurrentProgram))
+                {
+                    RaisePropertyChanged(nameof(ErrorCurrentProgram));
+                    RaisePropertyChanged(nameof(ErrorDisplaySteps));
+                }
+                else if (e.PropertyName == nameof(ProgramNavigationState.BreadcrumbPath))
+                    RaisePropertyChanged(nameof(ErrorBreadcrumbPath));
+                else if (e.PropertyName == nameof(ProgramNavigationState.CanGoBack))
+                    RaisePropertyChanged(nameof(ErrorCanGoBack));
+            };
+
+            // 订阅子程序导航事件（运行时由 StepRunning 发布）
+            _eventAggregator.GetEvent<SubProgramNavigateEvent>()
+                .Subscribe(OnSubProgramNavigate, ThreadOption.UIThread, false,
+                    payload => payload.Scope == _systemConfig.Title);
         }
 
         private void SelectionChanged(object parameter)
@@ -208,6 +270,72 @@ namespace TestingModule.ViewModels
         }
         #endregion
 
+        #region 子程序导航方法
+
+        /// <summary>
+        /// 编辑模式：右键打开子程序（操作当前激活的 Tab 的导航状态）
+        /// </summary>
+        private void OpenSubProgram()
+        {
+            if (SelectedStep == null || SelectedStep.StepType != "子程序" || SelectedStep.SubProgram == null)
+                return;
+
+            var nav = ActiveNav;
+            nav.NavigationStack.Push(nav.CurrentProgram);
+            nav.UpdateCanGoBack();
+            var stepName = SelectedStep.Name ?? "子程序";
+            nav.BreadcrumbPath = $"{nav.BreadcrumbPath} > {stepName}";
+            nav.CurrentProgram = SelectedStep.SubProgram;
+        }
+
+        /// <summary>
+        /// 返回上一级程序（操作当前激活的 Tab 的导航状态）
+        /// </summary>
+        private void GoBack()
+        {
+            var nav = ActiveNav;
+            if (nav.NavigationStack.Count == 0)
+                return;
+
+            var parentProgram = nav.NavigationStack.Pop();
+            nav.UpdateCanGoBack();
+            nav.CurrentProgram = parentProgram;
+
+            var parts = nav.BreadcrumbPath.Split(" > ");
+            nav.BreadcrumbPath = parts.Length > 1
+                ? string.Join(" > ", parts.Take(parts.Length - 1))
+                : nav == _ScopedContext.MainNav ? "主程序" : "错误程序";
+        }
+
+        /// <summary>
+        /// 运行时：处理 StepRunning 发布的子程序导航事件
+        /// </summary>
+        private void OnSubProgramNavigate(SubProgramNavigatePayload payload)
+        {
+            var nav = payload.IsErrorProgram ? _ScopedContext.ErrorNav : _ScopedContext.MainNav;
+            if (payload.Action == NavigateAction.Enter && payload.SubProgram != null)
+            {
+                nav.NavigationStack.Push(nav.CurrentProgram);
+                nav.UpdateCanGoBack();
+                nav.CurrentProgram = payload.SubProgram;
+                var stepName = payload.StepName ?? "子程序";
+                nav.BreadcrumbPath = $"{nav.BreadcrumbPath} > {stepName}";
+            }
+            else if (payload.Action == NavigateAction.Exit)
+            {
+                if (nav.NavigationStack.Count == 0) return;
+                var parentProgram = nav.NavigationStack.Pop();
+                nav.UpdateCanGoBack();
+                nav.CurrentProgram = parentProgram;
+                var parts = nav.BreadcrumbPath.Split(" > ");
+                nav.BreadcrumbPath = parts.Length > 1
+                    ? string.Join(" > ", parts.Take(parts.Length - 1))
+                    : nav == _ScopedContext.MainNav ? "主程序" : "错误程序";
+            }
+        }
+
+        #endregion
+
         #region 辅助方法
 
         /// <summary>
diff --git a/TestingModule/Views/StepsManager.xaml b/TestingModule/Views/StepsManager.xaml
index e7b3fca..2d044ca 100644
--- a/TestingModule/Views/StepsManager.xaml
+++ b/TestingModule/Views/StepsManager.xaml
@@ -8,9 +8,13 @@
              xmlns:behaviors="clr-namespace:UIShare.Behaviors;assembly=UIShare"
              xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
              xmlns:prism="http://prismlibrary.com/"
+             xmlns:converters="clr-namespace:UIShare.Converters;assembly=UIShare"
              d:DesignHeight="450"
              d:DesignWidth="800"
              mc:Ignorable="d">
+    <UserControl.Resources>
+        <converters:BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
+    </UserControl.Resources>
     <Grid>
         <GroupBox Header="{Binding Title}">
             <TabControl   SelectedIndex="{Binding SelectedTabIndex, Mode=TwoWay}">
@@ -19,6 +23,17 @@
                                                                   CommandParameter="{Binding SelectedTabHeader}" />
                 </i:Interaction.Behaviors>
                 <TabItem Header="主程序">
+                    <DockPanel>
+                        <!-- 主程序面包屑导航栏 -->
+                        <Border DockPanel.Dock="Top" Background="#F0F0F0" Padding="6,3" Visibility="{Binding MainCanGoBack, Converter={StaticResource BooleanToVisibilityConverter}}">
+                            <DockPanel>
+                                <Button DockPanel.Dock="Right" Content="↩ 返回上一级" 
+                                        Command="{Binding GoBackCommand}"
+                                        Style="{StaticResource MaterialDesignFlatButton}"
+                                        FontSize="12" Padding="8,2" Margin="8,0,0,0"/>
+                                <TextBlock Text="{Binding MainBreadcrumbPath}" VerticalAlignment="Center" FontSize="12" Foreground="#555"/>
+                            </DockPanel>
+                        </Border>
                     <DataGrid dd:DragDrop.IsDragSource="{Binding Admin}"
                               dd:DragDrop.IsDropTarget="{Binding Admin}"
                               dd:DragDrop.UseDefaultDragAdorner="{Binding Admin}"
@@ -29,7 +44,7 @@
                               Background="Transparent"
                               CanUserAddRows="False"
                               CanUserSortColumns="False"
-                              ItemsSource="{Binding Program.StepCollection}"
+                              ItemsSource="{Binding MainDisplaySteps}"
                               SelectedItem="{Binding SelectedStep, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                               SelectionMode="Extended"
                               SelectionUnit="FullRow">
@@ -120,14 +135,29 @@
                                 <MenuItem Header="删除"
                                           Foreground="Red"
                                           Command="{Binding DeleteStepCommand}" />
+                                <Separator/>
+                                <MenuItem Header="打开子程序"
+                                          Command="{Binding OpenSubProgramCommand}" />
                             </ContextMenu>
                         </DataGrid.ContextMenu>
 
 
 
                     </DataGrid>
+                    </DockPanel>
                 </TabItem>
                 <TabItem Header="错误程序">
+                    <DockPanel>
+                        <!-- 错误程序面包屑导航栏 -->
+                        <Border DockPanel.Dock="Top" Background="#F0F0F0" Padding="6,3" Visibility="{Binding ErrorCanGoBack, Converter={StaticResource BooleanToVisibilityConverter}}">
+                            <DockPanel>
+                                <Button DockPanel.Dock="Right" Content="↩ 返回上一级" 
+                                        Command="{Binding GoBackCommand}"
+                                        Style="{StaticResource MaterialDesignFlatButton}"
+                                        FontSize="12" Padding="8,2" Margin="8,0,0,0"/>
+                                <TextBlock Text="{Binding ErrorBreadcrumbPath}" VerticalAlignment="Center" FontSize="12" Foreground="#555"/>
+                            </DockPanel>
+                        </Border>
                     <DataGrid dd:DragDrop.IsDragSource="True"
                               dd:DragDrop.IsDropTarget="True"
                               dd:DragDrop.UseDefaultDragAdorner="True"
@@ -135,7 +165,7 @@
                               Background="Transparent"
                               CanUserAddRows="False"
                               CanUserSortColumns="False"
-                              ItemsSource="{Binding Program.ErrorStepCollection}"
+                              ItemsSource="{Binding ErrorDisplaySteps}"
                               SelectedItem="{Binding SelectedStep, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                               SelectionMode="Extended"
                               SelectionUnit="FullRow">
@@ -226,6 +256,9 @@
                                 <MenuItem Header="删除"
                                           Foreground="Red"
                                           Command="{Binding DeleteStepCommand}" />
+                                <Separator/>
+                                <MenuItem Header="打开子程序"
+                                          Command="{Binding OpenSubProgramCommand}" />
                             </ContextMenu>
                         </DataGrid.ContextMenu>
 
@@ -239,6 +272,7 @@
 </i:Interaction.Triggers>-->
 
                     </DataGrid>
+                    </DockPanel>
                 </TabItem>
             </TabControl>
         </GroupBox>
diff --git a/UIShare/GlobalVariable/ProgramNavigationState.cs b/UIShare/GlobalVariable/ProgramNavigationState.cs
new file mode 100644
index 0000000..ae9df3f
--- /dev/null
+++ b/UIShare/GlobalVariable/ProgramNavigationState.cs
@@ -0,0 +1,89 @@
+using Prism.Mvvm;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using UIShare.UIViewModel;
+
+namespace UIShare.GlobalVariable
+{
+    /// <summary>
+    /// 单个 Tab（主程序 / 错误程序）的子程序导航状态。
+    /// 主程序和错误程序各自持有一个独立实例，互不干扰。
+    /// </summary>
+    public class ProgramNavigationState : BindableBase
+    {
+        /// <summary>是否为错误程序 Tab</summary>
+        public bool IsErrorTab { get; set; }
+
+        public Stack<ProgramVM> NavigationStack { get; } = new();
+
+        private ProgramVM _currentProgram;
+        public ProgramVM CurrentProgram
+        {
+            get => _currentProgram;
+            set
+            {
+                if (SetProperty(ref _currentProgram, value))
+                    RaisePropertyChanged(nameof(DisplaySteps));
+            }
+        }
+
+        /// <summary>
+        /// DataGrid 实际绑定的步骤集合。
+        /// 根程序 + 错误 Tab → ErrorStepCollection；其他情况 → StepCollection。
+        /// </summary>
+        public ObservableCollection<StepVM> DisplaySteps
+        {
+            get
+            {
+                if (CurrentProgram == null)
+                    return new ObservableCollection<StepVM>();
+                // 在根程序且是错误 Tab → 显示错误步骤集合
+                if (NavigationStack.Count == 0 && IsErrorTab)
+                    return CurrentProgram.ErrorStepCollection;
+                // 其他情况（主 Tab 或已进入子程序）→ 显示正常步骤集合
+                return CurrentProgram.StepCollection;
+            }
+        }
+
+        private string _breadcrumbPath = "主程序";
+        public string BreadcrumbPath
+        {
+            get => _breadcrumbPath;
+            set => SetProperty(ref _breadcrumbPath, value);
+        }
+
+        private bool _canGoBack;
+        public bool CanGoBack
+        {
+            get => _canGoBack;
+            set => SetProperty(ref _canGoBack, value);
+        }
+
+        /// <summary>
+        /// 用根程序初始化导航状态
+        /// </summary>
+        public void Initialize(ProgramVM rootProgram, string label)
+        {
+            NavigationStack.Clear();
+            CurrentProgram = rootProgram;
+            BreadcrumbPath = label;
+            CanGoBack = false;
+        }
+
+        /// <summary>
+        /// 清空导航栈，回到根程序
+        /// </summary>
+        public void Reset(ProgramVM rootProgram, string label)
+        {
+            NavigationStack.Clear();
+            CurrentProgram = rootProgram;
+            BreadcrumbPath = label;
+            CanGoBack = false;
+        }
+
+        /// <summary>
+        /// 根据栈状态刷新 CanGoBack
+        /// </summary>
+        public void UpdateCanGoBack() => CanGoBack = NavigationStack.Count > 0;
+    }
+}
diff --git a/UIShare/GlobalVariable/ScopedContext.cs b/UIShare/GlobalVariable/ScopedContext.cs
index 7fcffdb..4a371a3 100644
--- a/UIShare/GlobalVariable/ScopedContext.cs
+++ b/UIShare/GlobalVariable/ScopedContext.cs
@@ -1,5 +1,6 @@
 using DeviceCommand.Base;
 using MaterialDesignThemes.Wpf;
+using Prism.Mvvm;
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
@@ -14,9 +15,35 @@ using UIShare.UIViewModel;
 
 namespace UIShare.GlobalVariable
 {
-    public class ScopedContext
+    public class ScopedContext : BindableBase
     {
         private static readonly Random _randomSeed = new Random();
+
+        #region 子程序导航（主程序 / 错误程序各自独立）
+
+        /// <summary>主程序 Tab 的导航状态</summary>
+        public ProgramNavigationState MainNav { get; } = new();
+
+        /// <summary>错误程序 Tab 的导航状态</summary>
+        public ProgramNavigationState ErrorNav { get; } = new();
+
+        /// <summary>
+        /// 根据当前选中的 Tab 返回对应的导航状态
+        /// </summary>
+        public ProgramNavigationState ActiveNav =>
+            SelectedStepList == "错误程序" ? ErrorNav : MainNav;
+
+        /// <summary>
+        /// 重置两个 Tab 的导航栈，回到根程序
+        /// </summary>
+        public void ResetNavigation()
+        {
+            MainNav.Reset(Program, "主程序");
+            ErrorNav.Reset(Program, "错误程序");
+        }
+
+        #endregion
+
         public ProgramVM Program { get; set; } = new();
         public String SelectedStepList { get; set; } = "主程序";
         public string CurrentFilePath { get; set; }
@@ -45,6 +72,7 @@ namespace UIShare.GlobalVariable
         public int DebugRandomId { get; private set; }
         public ScopedContext()
         {
+            ErrorNav.IsErrorTab = true;
             lock (_randomSeed)
             {
                 // 每次诞生一个新上下文，就在 10000 到 99999 之间随机摇一个数
diff --git a/UIShare/GlobalVariable/StepRunning.cs b/UIShare/GlobalVariable/StepRunning.cs
index 94d1edf..f48b1e1 100644
--- a/UIShare/GlobalVariable/StepRunning.cs
+++ b/UIShare/GlobalVariable/StepRunning.cs
@@ -181,7 +181,23 @@ namespace UIShare
                             _scopedContext.SingleStep = false;
                         }
                         LoggerHelper.InfoWithNotify(_systemConfig.Title, $"开始执行子程序 [ {step.Index} ]  [ {step.Name} ] ", depth);
+                        // 发布进入子程序导航事件
+                        _eventAggregator.GetEvent<SubProgramNavigateEvent>().Publish(new SubProgramNavigatePayload
+                        {
+                            Scope = _systemConfig.Title,
+                            Action = NavigateAction.Enter,
+                            SubProgram = step.SubProgram,
+                            StepName = step.Name,
+                            IsErrorProgram = true
+                        });
                         stepSuccess = await ExecuteSteps(step.SubProgram, depth + 1, cancellationToken);
+                        // 发布退出子程序导航事件
+                        _eventAggregator.GetEvent<SubProgramNavigateEvent>().Publish(new SubProgramNavigatePayload
+                        {
+                            Scope = _systemConfig.Title,
+                            Action = NavigateAction.Exit,
+                            IsErrorProgram = true
+                        });
                         UpdateCurrentStepResult(step, true, stepSuccess, depth);
                         if (SubSingleStep)
                         {
@@ -356,7 +372,21 @@ namespace UIShare
                             _scopedContext.SingleStep = false;
                         }
                          LoggerHelper.InfoWithNotify(_systemConfig.Title, $"开始执行子程序 [ {step.Index} ]  [ {step.Name} ] ", depth);
+                        // 发布进入子程序导航事件
+                        _eventAggregator.GetEvent<SubProgramNavigateEvent>().Publish(new SubProgramNavigatePayload
+                        {
+                            Scope = _systemConfig.Title,
+                            Action = NavigateAction.Enter,
+                            SubProgram = step.SubProgram,
+                            StepName = step.Name
+                        });
                         stepSuccess = await ExecuteSteps(step.SubProgram, depth + 1, cancellationToken);
+                        // 发布退出子程序导航事件
+                        _eventAggregator.GetEvent<SubProgramNavigateEvent>().Publish(new SubProgramNavigatePayload
+                        {
+                            Scope = _systemConfig.Title,
+                            Action = NavigateAction.Exit
+                        });
                         UpdateCurrentStepResult(step, true, stepSuccess, depth);
                         if (SubSingleStep)
                         {
diff --git a/UIShare/PubEvent/SubProgramNavigateEvent.cs b/UIShare/PubEvent/SubProgramNavigateEvent.cs
new file mode 100644
index 0000000..c3407b4
--- /dev/null
+++ b/UIShare/PubEvent/SubProgramNavigateEvent.cs
@@ -0,0 +1,37 @@
+using Prism.Events;
+using UIShare.UIViewModel;
+
+namespace UIShare.PubEvent
+{
+    /// <summary>
+    /// 子程序导航事件：运行时进入/退出子程序时发布，
+    /// StepsManagerViewModel 订阅后自动切换显示。
+    /// </summary>
+    public class SubProgramNavigateEvent : PubSubEvent<SubProgramNavigatePayload>
+    {
+    }
+
+    public class SubProgramNavigatePayload
+    {
+        /// <summary>目标台架的作用域标识</summary>
+        public string Scope { get; set; } = "";
+
+        /// <summary>Enter = 进入子程序，Exit = 退出回到上一级</summary>
+        public NavigateAction Action { get; set; }
+
+        /// <summary>进入时：子程序的 ProgramVM；退出时可为 null</summary>
+        public ProgramVM? SubProgram { get; set; }
+
+        /// <summary>子程序步骤的名称（用于面包屑显示）</summary>
+        public string? StepName { get; set; }
+
+        /// <summary>是否为错误程序 Tab 的导航（默认 false = 主程序 Tab）</summary>
+        public bool IsErrorProgram { get; set; }
+    }
+
+    public enum NavigateAction
+    {
+        Enter,
+        Exit
+    }
+}