diff --git a/COFTester/MainWindow.xaml.cs b/COFTester/MainWindow.xaml.cs
index b8b3f6e..de474eb 100644
--- a/COFTester/MainWindow.xaml.cs
+++ b/COFTester/MainWindow.xaml.cs
@@ -17,11 +17,13 @@ public partial class MainWindow : Window
     {
         InitializeComponent();
         DataContext = _viewModel;
+        _viewModel.RealtimeChartInvalidated += ViewModel_RealtimeChartInvalidated;
         QueueRealtimeChartLayoutRefresh();
     }
 
     protected override void OnClosed(EventArgs e)
     {
+        _viewModel.RealtimeChartInvalidated -= ViewModel_RealtimeChartInvalidated;
         _viewModel.Dispose();
         base.OnClosed(e);
     }
@@ -41,6 +43,7 @@ public partial class MainWindow : Window
     private void ShowRealtimeTab_Click(object sender, RoutedEventArgs e)
     {
         MainWorkspaceTabs.SelectedIndex = 0;
+        QueueRealtimeChartLayoutRefresh();
     }
 
     private void ShowHistoryTab_Click(object sender, RoutedEventArgs e)
@@ -63,6 +66,17 @@ public partial class MainWindow : Window
         QueueRealtimeChartLayoutRefresh();
     }
 
+    private void ViewModel_RealtimeChartInvalidated(object? sender, EventArgs e)
+    {
+        if (!Dispatcher.CheckAccess())
+        {
+            Dispatcher.BeginInvoke(new Action(QueueRealtimeChartLayoutRefresh), DispatcherPriority.Render);
+            return;
+        }
+
+        QueueRealtimeChartLayoutRefresh();
+    }
+
     private void TableMotionButton_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
     {
         if (sender is not Button button || button.Tag is not string direction)
diff --git a/COFTester/Services/RunExportService.cs b/COFTester/Services/RunExportService.cs
index a3554bf..5284bef 100644
--- a/COFTester/Services/RunExportService.cs
+++ b/COFTester/Services/RunExportService.cs
@@ -354,7 +354,7 @@ public sealed class RunExportService
             worksheet.Cell(row, 3).Value = runs[index].CurveColorHex;
             worksheet.Cell(row, 4).Value = runs[index].ValidSamples.Count;
             worksheet.Cell(row, 5).Value = IsChartableRun(runs[index])
-                ? "已绘制"
+                ? "已绘制总览与单图"
                 : "采样点不足，未绘制曲线";
             worksheet.Cell(row, 3).Style.Fill.BackgroundColor = ToXlColor(runs[index].CurveColorHex);
             worksheet.Cell(row, 3).Style.Font.FontColor = XLColor.White;
@@ -445,11 +445,16 @@ public sealed class RunExportService
             var titleRef = BuildCellReference(sheetName, startRow, xColumn);
             var startDataRow = startRow + 2;
             var endDataRow = Math.Max(startDataRow, currentRow - 1);
+            var xValues = item.ValidSamples.Select(sample => sample.DisplacementMm).ToArray();
+            var yValues = item.ValidSamples.Select(sample => sample.ForceN).ToArray();
             var layout = new SeriesLayout(
                 titleRef,
                 BuildRangeReference(sheetName, startDataRow, xColumn, endDataRow, xColumn),
                 BuildRangeReference(sheetName, startDataRow, yColumn, endDataRow, yColumn),
-                item.CurveColorHex);
+                item.CurveColorHex,
+                BuildCurveLabel(item),
+                xValues,
+                yValues);
 
             if (IsChartableRun(item))
             {
@@ -458,10 +463,26 @@ public sealed class RunExportService
         }
 
         var charts = new List<ChartDefinition>();
-        var perRunStartRow = Math.Max(10, runs.Count + 8);
+        var overviewStartRow = Math.Max(10, runs.Count + 8);
+        const int overviewChartHeight = 13;
         const int chartHeight = 11;
         const int chartWidth = 19;
         const int rowGap = 2;
+        var perRunStartRow = overviewStartRow;
+
+        if (perRunSeries.Count > 0)
+        {
+            charts.Add(new ChartDefinition(
+                "历史实时摩擦曲线总览",
+                "位移 (mm)",
+                "力值 (N)",
+                true,
+                perRunSeries.Select(item => item.Series).ToArray(),
+                new ChartAnchor(0, overviewStartRow, chartWidth, overviewStartRow + overviewChartHeight),
+                "历史实时摩擦曲线总览"));
+
+            perRunStartRow = overviewStartRow + overviewChartHeight + rowGap;
+        }
 
         for (var index = 0; index < perRunSeries.Count; index++)
         {
@@ -492,7 +513,8 @@ public sealed class RunExportService
     private static int CalculateChartSheetLastRow(IReadOnlyList<ExportCurveData> runs)
     {
         var chartCount = runs.Count(IsChartableRun);
-        return Math.Max(24, runs.Count + 22 + chartCount * 13);
+        var renderedChartCount = chartCount == 0 ? 0 : chartCount + 1;
+        return Math.Max(24, runs.Count + 22 + renderedChartCount * 13);
     }
 
     private static void ApplyDefaultWorksheetStyle(IXLWorksheet worksheet)
@@ -695,11 +717,11 @@ public sealed class RunExportService
             var scatterSeries = new C.ScatterChartSeries(
                 new C.Index { Val = (uint)index },
                 new C.Order { Val = (uint)index },
-                new C.SeriesText(new C.StringReference(new C.Formula(series.TitleReference))),
+                new C.SeriesText(CreateStringReference(series.TitleReference, series.TitleText)),
                 chartShape,
                 new C.Marker(new C.Symbol { Val = C.MarkerStyleValues.None }),
-                new C.XValues(new C.NumberReference(new C.Formula(series.XValuesReference))),
-                new C.YValues(new C.NumberReference(new C.Formula(series.YValuesReference))),
+                new C.XValues(CreateNumberReference(series.XValuesReference, series.XValues)),
+                new C.YValues(CreateNumberReference(series.YValuesReference, series.YValues)),
                 new C.Smooth { Val = false });
 
             scatterChart.Append(scatterSeries);
@@ -754,6 +776,28 @@ public sealed class RunExportService
         chartPart.ChartSpace.Save();
     }
 
+    private static C.StringReference CreateStringReference(string formula, string value)
+    {
+        var stringCache = new C.StringCache(new C.PointCount { Val = 1U });
+        stringCache.Append(new C.StringPoint(new C.NumericValue(value)) { Index = 0U });
+        return new C.StringReference(new C.Formula(formula), stringCache);
+    }
+
+    private static C.NumberReference CreateNumberReference(string formula, IReadOnlyList<double> values)
+    {
+        var numberingCache = new C.NumberingCache(new C.FormatCode("General"), new C.PointCount { Val = (uint)values.Count });
+        for (var index = 0; index < values.Count; index++)
+        {
+            numberingCache.Append(new C.NumericPoint(
+                new C.NumericValue(values[index].ToString("G17", CultureInfo.InvariantCulture)))
+            {
+                Index = (uint)index
+            });
+        }
+
+        return new C.NumberReference(new C.Formula(formula), numberingCache);
+    }
+
     private static void AppendChartAnchor(Xdr.WorksheetDrawing worksheetDrawing, string chartRelationshipId, ChartAnchor anchor, string shapeName)
     {
         var graphicFrameId = worksheetDrawing.Descendants<Xdr.NonVisualDrawingProperties>()
@@ -952,7 +996,14 @@ public sealed class RunExportService
         int ExcludedRunCount,
         int ValidSampleCount);
 
-    private sealed record SeriesLayout(string TitleReference, string XValuesReference, string YValuesReference, string ColorHex);
+    private sealed record SeriesLayout(
+        string TitleReference,
+        string XValuesReference,
+        string YValuesReference,
+        string ColorHex,
+        string TitleText,
+        IReadOnlyList<double> XValues,
+        IReadOnlyList<double> YValues);
 
     private sealed record PerRunSeriesLayout(ExportCurveData Data, SeriesLayout Series);
 
diff --git a/COFTester/ViewModels/MainViewModel.cs b/COFTester/ViewModels/MainViewModel.cs
index 1859f88..716ad3d 100644
--- a/COFTester/ViewModels/MainViewModel.cs
+++ b/COFTester/ViewModels/MainViewModel.cs
@@ -258,6 +258,8 @@ public sealed class MainViewModel : ObservableObject, IDisposable
         _ = InitializeDeviceConnectionAsync();
     }
 
+    public event EventHandler? RealtimeChartInvalidated;
+
     public string StandardVersion => "静摩擦与动摩擦系数工控界面";
 
     public TestRecipe Recipe { get; }
@@ -735,12 +737,9 @@ public sealed class MainViewModel : ObservableObject, IDisposable
             _activeRecipeSnapshot = TestRecipeSnapshot.FromRecipe(Recipe);
             _activeRunStartedByPlc = startedByPlc;
             _displayedRecipeSnapshot = _activeRecipeSnapshot;
-            _isShowingHistoricalRun = false;
+            ClearHistoricalSelectionForLiveRun();
             _currentRunSamples.Clear();
-            _forceSamples.Clear();
-            _peakLineSamples.Clear();
-            _averageLineSamples.Clear();
-            _currentPointSample.Clear();
+            ClearRealtimeChartSamples();
             ResetRealtimeSamplingMetrics();
             CurrentForceN = 0;
             CurrentDisplacementMm = 0;
@@ -763,13 +762,15 @@ public sealed class MainViewModel : ObservableObject, IDisposable
             _kineticBand.Xj = Recipe.TravelMm;
             _kineticBand.Yi = 0;
             _kineticBand.Yj = 1;
+            SetAxisLimits(GetEmptyChartXAxisMaxLimit(), EmptyChartYAxisMaxLimit);
+            NotifyRealtimeChartChanged();
             _deviceDataReader.Initialize(Recipe);
             AddInfoEvent($"批次 {Recipe.BatchNumber} 第 {NextRunIndex} 轮开始。模式={Recipe.TestMode}, 水平速度={Recipe.SpeedMmPerMin:F0} mm/min");
         }
         else if (isRecoveringActiveRun)
         {
             _activeRunStartedByPlc |= startedByPlc;
-            _isShowingHistoricalRun = false;
+            ClearHistoricalSelectionForLiveRun();
             _displayedRecipeSnapshot = _activeRecipeSnapshot;
             AddInfoEvent($"试验通信恢复后继续运行，已保留 {_currentRunSamples.Count} 个采样点。");
         }
@@ -785,6 +786,7 @@ public sealed class MainViewModel : ObservableObject, IDisposable
         InterlockMessage = "采样进行中。实时监控力值与摩擦系数。";
         _timer.Start();
         RaiseStatusProperties();
+        NotifyRealtimeChartChanged();
     }
 
     private async void Pause()
@@ -1078,6 +1080,8 @@ public sealed class MainViewModel : ObservableObject, IDisposable
             _exportReportCommand.RaiseCanExecuteChanged();
         }
 
+        NotifyRealtimeChartChanged();
+
         return true;
     }
 
@@ -1206,6 +1210,7 @@ public sealed class MainViewModel : ObservableObject, IDisposable
         ForceYAxes[0].MaxLimit = yMax;
         OnPropertyChanged(nameof(ForceXAxes));
         OnPropertyChanged(nameof(ForceYAxes));
+        NotifyRealtimeChartChanged();
     }
 
     private static bool ShouldUpdateAxisLimit(double currentLimit, double nextLimit)
@@ -1324,6 +1329,35 @@ public sealed class MainViewModel : ObservableObject, IDisposable
         _lastRealtimeChartRefreshAt = DateTime.MinValue;
     }
 
+    private void ClearRealtimeChartSamples()
+    {
+        _forceSamples.Clear();
+        _peakLineSamples.Clear();
+        _averageLineSamples.Clear();
+        _currentPointSample.Clear();
+        OnPropertyChanged(nameof(ForceSeries));
+    }
+
+    private void ClearHistoricalSelectionForLiveRun()
+    {
+        _isShowingHistoricalRun = false;
+        if (_selectedRunRecord is null)
+        {
+            return;
+        }
+
+        _selectedRunRecord = null;
+        OnPropertyChanged(nameof(SelectedRunRecord));
+        OnPropertyChanged(nameof(ExportReportSummary));
+        OnPropertyChanged(nameof(AnalysisModeSummary));
+        RaiseCommandStates();
+    }
+
+    private void NotifyRealtimeChartChanged()
+    {
+        RealtimeChartInvalidated?.Invoke(this, EventArgs.Empty);
+    }
+
     private TestRecipeSnapshot GetDisplayRecipeSnapshot()
     {
         return _isShowingHistoricalRun && _displayedRecipeSnapshot is not null
@@ -1652,7 +1686,7 @@ public sealed class MainViewModel : ObservableObject, IDisposable
 
     private void LoadSamplesIntoChart(IReadOnlyList<RawSampleRecord> samples)
     {
-        _forceSamples.Clear();
+        ClearRealtimeChartSamples();
         foreach (var sample in samples)
         {
             _forceSamples.Add(new ObservablePoint(sample.DisplacementMm, sample.ForceN));
@@ -1667,14 +1701,13 @@ public sealed class MainViewModel : ObservableObject, IDisposable
         {
             ShowEmptyRealtimeChartFrame();
         }
+
+        NotifyRealtimeChartChanged();
     }
 
     private void ShowEmptyRealtimeChartFrame()
     {
-        _forceSamples.Clear();
-        _peakLineSamples.Clear();
-        _averageLineSamples.Clear();
-        _currentPointSample.Clear();
+        ClearRealtimeChartSamples();
         _currentPointSample.Add(new ObservablePoint(0, EmptyChartPointForceN));
         SetAxisLimits(GetEmptyChartXAxisMaxLimit(), EmptyChartYAxisMaxLimit);
         _kineticBand.Xi = Recipe.TravelMm * 0.35;
@@ -1682,6 +1715,7 @@ public sealed class MainViewModel : ObservableObject, IDisposable
         _kineticBand.Yi = 0;
         _kineticBand.Yj = EmptyChartYAxisMaxLimit;
         OnPropertyChanged(nameof(ForceSections));
+        NotifyRealtimeChartChanged();
     }
 
     private void RefreshEmptyRealtimeChartFrameIfVisible()
@@ -1704,10 +1738,7 @@ public sealed class MainViewModel : ObservableObject, IDisposable
 
     private void ResetRealtimePresentation()
     {
-        _forceSamples.Clear();
-        _peakLineSamples.Clear();
-        _averageLineSamples.Clear();
-        _currentPointSample.Clear();
+        ClearRealtimeChartSamples();
         ResetRealtimeSamplingMetrics();
 
         CurrentForceN = 0;