diff --git a/ACP/ViewModels/ShellViewModel.cs b/ACP/ViewModels/ShellViewModel.cs
index e4bfeec..af76648 100644
--- a/ACP/ViewModels/ShellViewModel.cs
+++ b/ACP/ViewModels/ShellViewModel.cs
@@ -44,6 +44,16 @@ namespace ACP.ViewModels
         private readonly DispatcherTimer _uiRefreshTimer;
         #endregion
 
+        #region 子程序导航
+
+        /// <summary>
+        /// 当前台架是否可以返回上一级
+        /// </summary>
+        public bool CanGoBack => CurrentContext?.CanGoBack ?? false;
+
+
+        #endregion
+
         #region 属性
         public string Title
         {
@@ -237,6 +247,7 @@ namespace ACP.ViewModels
             RaisePropertyChanged(nameof(RunIcon));
             RaisePropertyChanged(nameof(RunningTime));
             RaisePropertyChanged(nameof(IsTerminate));
+            RaisePropertyChanged(nameof(CanGoBack));
         }
 
         #region 命令处理与事件
@@ -519,6 +530,9 @@ namespace ACP.ViewModels
                 targetContext.IsTerminate = false;
             }
 
+            // 清空子程序导航栈，回到根程序
+            targetContext.ResetNavigation();
+
             if (_globalInfo.CurrentScope == runningScope) RefreshAllContextProperties();
         }
 
@@ -601,6 +615,7 @@ namespace ACP.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);
@@ -665,7 +680,7 @@ namespace ACP.ViewModels
                 targetContext.Program.StepCollection = program.StepCollection;
                 targetContext.Program.ErrorStepCollection = program.ErrorStepCollection;
                 targetContext.CurrentFilePath = filePath;
-
+                targetContext.ResetNavigation();
                 foreach (var item in CurrentConfig.SharedParameterList)
                 {
                     var parameter = targetContext?.Program?.Parameters?.FirstOrDefault(x => x.Name == item.ParameterName);
diff --git a/ACP/Views/ShellView.xaml b/ACP/Views/ShellView.xaml
index 8217e35..39a0696 100644
--- a/ACP/Views/ShellView.xaml
+++ b/ACP/Views/ShellView.xaml
@@ -244,6 +244,8 @@ Command="{Binding GetFileStringCommand}">
                                      Foreground="Black" />
                                 </MenuItem.Icon>
                             </MenuItem>
+                            <Separator/>
+                 
                         </MenuItem>
                         <MenuItem Header="切换初始主界面"
                                  FontSize="13"
diff --git a/TestingModule/ViewModels/StepsManagerViewModel.cs b/TestingModule/ViewModels/StepsManagerViewModel.cs
index 23e7ad4..4b048ff 100644
--- a/TestingModule/ViewModels/StepsManagerViewModel.cs
+++ b/TestingModule/ViewModels/StepsManagerViewModel.cs
@@ -16,6 +16,7 @@ using System.Xml;
 using UIShare.GlobalVariable;
 using UIShare.ViewModelBase;
 using Prism.Events;
+using Prism.Commands;
 
 namespace TestingModule.ViewModels
 {
@@ -94,6 +95,44 @@ 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
+
+        /// <summary>
+        /// 当前显示的程序（绑定到 DataGrid 的 ItemsSource 根）。
+        /// 委托到 ScopedContext.CurrentProgram，保证 ShellViewModel 也能通过 ScopedContext 访问。
+        /// </summary>
+        public ProgramVM CurrentProgram
+        {
+            get => _ScopedContext.CurrentProgram;
+            set
+            {
+                if (_ScopedContext.CurrentProgram != value)
+                {
+                    _ScopedContext.CurrentProgram = value;
+                    RaisePropertyChanged();
+                }
+            }
+        }
+
+        public string BreadcrumbPath
+        {
+            get => _ScopedContext.BreadcrumbPath;
+            set
+            {
+                if (_ScopedContext.BreadcrumbPath != value)
+                {
+                    _ScopedContext.BreadcrumbPath = value;
+                    RaisePropertyChanged();
+                }
+            }
+        }
+
+        public bool CanGoBack => _ScopedContext.CanGoBack;
+
         #endregion
 
         public StepsManagerViewModel(IContainerProvider containerProvider, ScopedContext scopedContext, SystemConfig systemConfig, GlobalInfo globalInfo) : base(containerProvider)
@@ -108,9 +147,31 @@ 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 CurrentProgram 为根程序
+            _ScopedContext.CurrentProgram = Program;
+            _ScopedContext.BreadcrumbPath = "主程序";
+
+            // 订阅 ScopedContext 属性变化，外部（ShellViewModel）修改时转发通知给 UI
+            _ScopedContext.PropertyChanged += (s, e) =>
+            {
+                if (e.PropertyName == nameof(ScopedContext.CurrentProgram))
+                    RaisePropertyChanged(nameof(CurrentProgram));
+                else if (e.PropertyName == nameof(ScopedContext.BreadcrumbPath))
+                    RaisePropertyChanged(nameof(BreadcrumbPath));
+                else if (e.PropertyName == nameof(ScopedContext.CanGoBack))
+                    RaisePropertyChanged(nameof(CanGoBack));
+            };
+
+            // 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 +269,72 @@ namespace TestingModule.ViewModels
         }
         #endregion
 
+        #region 子程序导航方法
+
+        /// <summary>
+        /// 编辑模式：右键打开子程序
+        /// </summary>
+        private void OpenSubProgram()
+        {
+            if (SelectedStep == null || SelectedStep.StepType != "子程序" || SelectedStep.SubProgram == null)
+                return;
+
+            // 压栈：保存当前程序
+            _ScopedContext.SubProgramNavigationStack.Push(CurrentProgram);
+            _ScopedContext.UpdateCanGoBack();
+            // 更新面包屑
+            var stepName = SelectedStep.Name ?? "子程序";
+            BreadcrumbPath = $"{BreadcrumbPath} > {stepName}";
+            // 切换到子程序
+            CurrentProgram = SelectedStep.SubProgram;
+            RaisePropertyChanged(nameof(CanGoBack));
+        }
+
+        /// <summary>
+        /// 返回上一级程序
+        /// </summary>
+        private void GoBack()
+        {
+            if (_ScopedContext.SubProgramNavigationStack.Count == 0)
+                return;
+
+            // 出栈：恢复上一级程序
+            var parentProgram = _ScopedContext.SubProgramNavigationStack.Pop();
+            _ScopedContext.UpdateCanGoBack();
+            CurrentProgram = parentProgram;
+
+            // 更新面包屑：去掉最后一段
+            var parts = BreadcrumbPath.Split(" > ");
+            if (parts.Length > 1)
+                BreadcrumbPath = string.Join(" > ", parts.Take(parts.Length - 1));
+            else
+                BreadcrumbPath = "主程序";
+
+            RaisePropertyChanged(nameof(CanGoBack));
+        }
+
+        /// <summary>
+        /// 运行时：处理 StepRunning 发布的子程序导航事件
+        /// </summary>
+        private void OnSubProgramNavigate(SubProgramNavigatePayload payload)
+        {
+            if (payload.Action == NavigateAction.Enter && payload.SubProgram != null)
+            {
+                _ScopedContext.SubProgramNavigationStack.Push(CurrentProgram);
+                _ScopedContext.UpdateCanGoBack();
+                CurrentProgram = payload.SubProgram;
+                var stepName = payload.StepName ?? "子程序";
+                BreadcrumbPath = $"{BreadcrumbPath} > {stepName}";
+                RaisePropertyChanged(nameof(CanGoBack));
+            }
+            else if (payload.Action == NavigateAction.Exit)
+            {
+                GoBack();
+            }
+        }
+
+        #endregion
+
         #region 辅助方法
 
         /// <summary>
@@ -304,9 +431,9 @@ namespace TestingModule.ViewModels
                     Program.PropertyChanged -= Program_PropertyChanged;
                 }
 
-                // 3. 【核心修复】必须显式退订 Prism 全局事件（AlarmEvent）
-                // 注意：因为订阅时使用的是匿名 Lambda，最安全稳妥的退订方式是把整个事件上的当前 VM 订阅者全部注销
+                // 3. 【核心修复】必须显式退订 Prism 全局事件
                 _eventAggregator?.GetEvent<AlarmEvent>()?.Unsubscribe(null);
+                _eventAggregator?.GetEvent<SubProgramNavigateEvent>()?.Unsubscribe(null);
 
                 // 4. 清空临时缓存集合与 UI 绑定列表，避免悬挂指针
                 tmpCopyList?.Clear();
diff --git a/TestingModule/Views/StepsManager.xaml b/TestingModule/Views/StepsManager.xaml
index e7b3fca..dcb8b75 100644
--- a/TestingModule/Views/StepsManager.xaml
+++ b/TestingModule/Views/StepsManager.xaml
@@ -8,11 +8,26 @@
              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}">
+            <DockPanel>
+                <!-- 面包屑导航栏 -->
+                <Border DockPanel.Dock="Top" Background="#F0F0F0" Padding="6,3" Visibility="{Binding CanGoBack, 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 BreadcrumbPath}" VerticalAlignment="Center" FontSize="12" Foreground="#555"/>
+                    </DockPanel>
+                </Border>
             <TabControl   SelectedIndex="{Binding SelectedTabIndex, Mode=TwoWay}">
                 <i:Interaction.Behaviors>
                     <behaviors:TabControlSelectionChangedBehavior Command="{Binding TabSelectionChangedCommand}"
@@ -29,7 +44,7 @@
                               Background="Transparent"
                               CanUserAddRows="False"
                               CanUserSortColumns="False"
-                              ItemsSource="{Binding Program.StepCollection}"
+                              ItemsSource="{Binding CurrentProgram.StepCollection}"
                               SelectedItem="{Binding SelectedStep, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                               SelectionMode="Extended"
                               SelectionUnit="FullRow">
@@ -120,6 +135,9 @@
                                 <MenuItem Header="删除"
                                           Foreground="Red"
                                           Command="{Binding DeleteStepCommand}" />
+                                <Separator/>
+                                <MenuItem Header="打开子程序"
+                                          Command="{Binding OpenSubProgramCommand}" />
                             </ContextMenu>
                         </DataGrid.ContextMenu>
 
@@ -135,7 +153,7 @@
                               Background="Transparent"
                               CanUserAddRows="False"
                               CanUserSortColumns="False"
-                              ItemsSource="{Binding Program.ErrorStepCollection}"
+                              ItemsSource="{Binding CurrentProgram.ErrorStepCollection}"
                               SelectedItem="{Binding SelectedStep, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                               SelectionMode="Extended"
                               SelectionUnit="FullRow">
@@ -226,21 +244,16 @@
                                 <MenuItem Header="删除"
                                           Foreground="Red"
                                           Command="{Binding DeleteStepCommand}" />
+                                <Separator/>
+                                <MenuItem Header="打开子程序"
+                                          Command="{Binding OpenSubProgramCommand}" />
                             </ContextMenu>
                         </DataGrid.ContextMenu>
 
-                        <!-- 键盘 删除键绑定 Delete 命令 -->
-                        <!--<i:Interaction.Triggers>
-    <i:EventTrigger EventName="PreviewKeyDown">
-        <i:InvokeCommandAction Command="{Binding DeleteStepCommand}"
-                               CommandParameter="{Binding SelectedStep}"
-                               PassEventArgsToCommand="True" />
-    </i:EventTrigger>
-</i:Interaction.Triggers>-->
-
                     </DataGrid>
                 </TabItem>
             </TabControl>
+            </DockPanel>
         </GroupBox>
         
     </Grid>
diff --git a/UIShare/GlobalVariable/ScopedContext.cs b/UIShare/GlobalVariable/ScopedContext.cs
index 7fcffdb..11756d0 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 +15,72 @@ using UIShare.UIViewModel;
 
 namespace UIShare.GlobalVariable
 {
-    public class ScopedContext
+    public class ScopedContext : BindableBase
     {
         private static readonly Random _randomSeed = new Random();
+
+        #region 子程序导航栈（台架隔离）
+
+        /// <summary>
+        /// 子程序导航栈：记录从根程序进入子程序的路径。
+        /// 每个台架（ScopedContext 实例）各自维护一个独立的栈，互不干扰。
+        /// </summary>
+        public Stack<ProgramVM> SubProgramNavigationStack { get; } = new();
+
+        private ProgramVM _currentProgram;
+        /// <summary>
+        /// 当前在 StepManager 中显示的程序（可能是根程序，也可能是某层子程序）。
+        /// UI 的 DataGrid 绑定此属性，而非直接绑定 Program。
+        /// </summary>
+        public ProgramVM CurrentProgram
+        {
+            get => _currentProgram;
+            set => SetProperty(ref _currentProgram, value);
+        }
+
+        private string _breadcrumbPath = "主程序";
+        /// <summary>
+        /// 面包屑导航路径，如 "主程序 > 连接流程 > 初始化"
+        /// </summary>
+        public string BreadcrumbPath
+        {
+            get => _breadcrumbPath;
+            set => SetProperty(ref _breadcrumbPath, value);
+        }
+
+        private bool _canGoBack;
+        /// <summary>
+        /// 是否可以返回上一级（导航栈不为空时为 true）
+        /// </summary>
+        public bool CanGoBack
+        {
+            get => _canGoBack;
+            set => SetProperty(ref _canGoBack, value);
+        }
+
+        /// <summary>
+        /// 清空导航栈，回到根程序界面
+        /// </summary>
+        public void ResetNavigation()
+        {
+            SubProgramNavigationStack.Clear();
+            CurrentProgram = Program;
+            BreadcrumbPath = "主程序";
+            CanGoBack = false;
+        }
+
+        /// <summary>
+        /// 根据栈状态刷新 CanGoBack
+        /// </summary>
+        public void UpdateCanGoBack() => CanGoBack = SubProgramNavigationStack.Count > 0;
+
+        /// <summary>
+        /// 当前导航深度（0 = 根程序，1 = 第一层子程序，以此类推）
+        /// </summary>
+        public int NavigationDepth => SubProgramNavigationStack.Count;
+
+        #endregion
+
         public ProgramVM Program { get; set; } = new();
         public String SelectedStepList { get; set; } = "主程序";
         public string CurrentFilePath { get; set; }
diff --git a/UIShare/GlobalVariable/StepRunning.cs b/UIShare/GlobalVariable/StepRunning.cs
index 25b96b5..56cfcf4 100644
--- a/UIShare/GlobalVariable/StepRunning.cs
+++ b/UIShare/GlobalVariable/StepRunning.cs
@@ -2,6 +2,7 @@
 using UIShare.PubEvent;
 using Common.Tools;
 using Logger;
+
 using MaterialDesignThemes.Wpf;
 using Model.Entity;
 using Service.Interface;
@@ -181,7 +182,21 @@ 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)
                         {
@@ -239,6 +254,7 @@ namespace UIShare
                 tmpParameters.Clear();
                 TestRoundID = Guid.NewGuid();
             }
+            int initialLoopStackCount = loopStack.Count;
             foreach (var item in program.Parameters)
             {
                 tmpParameters.TryAdd(item.ID, item);
@@ -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)
                         {
@@ -403,9 +433,15 @@ namespace UIShare
                         _eventAggregator.GetEvent<RunSingalCompletedEvent>().Publish("Play");
                     }
                     await SaveStepRecordAsync(step, depth, false);
+                    // 仅检查本层执行期间压入的循环是否全部弹出，不关心父程序遗留的循环上下文
                 }
             }
+            bool finalResult = loopStack.Count == initialLoopStackCount && stepSuccess;
 
+            if (depth > 0) // 子程序
+            {
+                return finalResult;
+            }
             return loopStack.Count == 0 && stepSuccess;
         }
 
diff --git a/UIShare/PubEvent/SubProgramNavigateEvent.cs b/UIShare/PubEvent/SubProgramNavigateEvent.cs
new file mode 100644
index 0000000..1330f2f
--- /dev/null
+++ b/UIShare/PubEvent/SubProgramNavigateEvent.cs
@@ -0,0 +1,34 @@
+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; }
+    }
+
+    public enum NavigateAction
+    {
+        Enter,
+        Exit
+    }
+}