diff --git a/CSI-H238M/CSI-H238M/App.xaml.cs b/CSI-H238M/CSI-H238M/App.xaml.cs
index 12b5256..9bd3fe8 100644
--- a/CSI-H238M/CSI-H238M/App.xaml.cs
+++ b/CSI-H238M/CSI-H238M/App.xaml.cs
@@ -107,7 +107,9 @@ namespace CSI_H238M
             // 保存配置（如果需要）
             try
             {
-                _config?.Save(AppConfig.GetDefaultConfigPath());
+                string configPath = AppConfig.GetDefaultConfigPath();
+                _config = AppConfig.Load(configPath);
+                _config?.Save(configPath);
             }
             catch
             {
diff --git a/CSI-H238M/CSI-H238M/Models/AppConfig.cs b/CSI-H238M/CSI-H238M/Models/AppConfig.cs
index d8e126d..09e86ec 100644
--- a/CSI-H238M/CSI-H238M/Models/AppConfig.cs
+++ b/CSI-H238M/CSI-H238M/Models/AppConfig.cs
@@ -42,6 +42,8 @@ namespace COFTester.Models
         /// </summary>
         public string Language { get; set; } = "zh-CN";
 
+        public string ForceDisplayUnit { get; set; } = "N";
+
         /// <summary>
         /// 自動保存測試結果
         /// </summary>
diff --git a/CSI-H238M/CSI-H238M/Models/Model.cs b/CSI-H238M/CSI-H238M/Models/Model.cs
index 93dc880..6fdf704 100644
--- a/CSI-H238M/CSI-H238M/Models/Model.cs
+++ b/CSI-H238M/CSI-H238M/Models/Model.cs
@@ -240,8 +240,10 @@ namespace COFTester.Models
     /// </summary>
     public class TestResult : INotifyPropertyChanged
     {
+        private const double StandardGravity = 9.80665;
         private bool _isVisible = true;
         private string _sampleNumber = string.Empty;
+        private string _forceDisplayUnit = "N";
 
         public Guid TestId { get; set; } = Guid.NewGuid(); // 測試唯一ID
         public DateTime TestDateTime { get; set; } = DateTime.Now; // 測試時間
@@ -267,6 +269,31 @@ namespace COFTester.Models
         /// <summary>
         /// 试样编号
         /// </summary>
+        public string ForceDisplayUnit
+        {
+            get => _forceDisplayUnit;
+            set
+            {
+                string normalizedUnit = string.Equals(value, "g", StringComparison.OrdinalIgnoreCase) ? "g" : "N";
+                if (_forceDisplayUnit == normalizedUnit)
+                {
+                    return;
+                }
+
+                _forceDisplayUnit = normalizedUnit;
+                OnPropertyChanged();
+                OnPropertyChanged(nameof(DisplayedMaxForce));
+                OnPropertyChanged(nameof(DisplayedAvgKineticForce));
+                OnPropertyChanged(nameof(DisplayedPeelStrength25mm));
+            }
+        }
+
+        public double DisplayedMaxForce => ConvertForceForDisplay(MaxForce);
+
+        public double DisplayedAvgKineticForce => ConvertForceForDisplay(AvgKineticForce);
+
+        public double DisplayedPeelStrength25mm => ConvertForceForDisplay(PeelStrength_N_25mm);
+
         public string SampleNumber
         {
             get => _sampleNumber;
@@ -282,6 +309,13 @@ namespace COFTester.Models
             set { _isVisible = value; OnPropertyChanged(); }
         }
 
+        private double ConvertForceForDisplay(double forceInNewton)
+        {
+            return ForceDisplayUnit == "g"
+                ? forceInNewton * 1000.0 / StandardGravity
+                : forceInNewton;
+        }
+
         public event PropertyChangedEventHandler? PropertyChanged;
         protected void OnPropertyChanged([CallerMemberName] string? name = null)
         {
diff --git a/CSI-H238M/CSI-H238M/Services/PdfReportService.cs b/CSI-H238M/CSI-H238M/Services/PdfReportService.cs
index 9904c21..e529f30 100644
--- a/CSI-H238M/CSI-H238M/Services/PdfReportService.cs
+++ b/CSI-H238M/CSI-H238M/Services/PdfReportService.cs
@@ -166,6 +166,7 @@ namespace COFTester.Services
     /// </summary>
     public class PdfReportService
     {
+        private const double StandardGravity = 9.80665;
         private const double PageWidth = 595;  // A4宽度（点）
         private const double PageHeight = 842; // A4高度（点）
         private const double MarginLeft = 50;
@@ -195,10 +196,11 @@ namespace COFTester.Services
         /// <param name="testRecords">测试记录</param>
         /// <param name="parameters">测试参数</param>
         /// <param name="isChinese">是否使用中文（默认根据当前语言）</param>
-        public void GenerateReport(string filePath, IEnumerable<TestResult> testRecords, TestParameters parameters, bool? isChinese = null)
+        public void GenerateReport(string filePath, IEnumerable<TestResult> testRecords, TestParameters parameters, string forceDisplayUnit = "N", bool? isChinese = null)
         {
             // 如果未指定语言，根据当前语言资源判断
             bool useChinese = isChinese ?? (Resources.LanguageResources.Instance.CurrentLanguage == "zh-CN");
+            string normalizedForceUnit = NormalizeForceDisplayUnit(forceDisplayUnit);
             
             if (testRecords == null || !testRecords.Any())
                 throw new ArgumentException(useChinese ? "测试记录不能为空" : "Test records cannot be empty");
@@ -232,13 +234,13 @@ namespace COFTester.Services
             yPosition = DrawHeader(gfx, yPosition, useChinese);
             System.Diagnostics.Debug.WriteLine("标题已绘制");
             
-            yPosition = DrawTestInfo(gfx, yPosition, parameters, useChinese);
+            yPosition = DrawTestInfo(gfx, yPosition, parameters, normalizedForceUnit, useChinese);
             System.Diagnostics.Debug.WriteLine("测试信息已绘制");
             
             yPosition = DrawStatistics(gfx, yPosition, testRecords, useChinese);
             System.Diagnostics.Debug.WriteLine("统计信息已绘制");
             
-            yPosition = DrawDetailedResults(gfx, yPosition, testRecords, document, gfx, page, useChinese);
+            yPosition = DrawDetailedResults(gfx, yPosition, testRecords, normalizedForceUnit, document, gfx, page, useChinese);
             System.Diagnostics.Debug.WriteLine("详细结果已绘制");
             
             // 保存文档
@@ -283,7 +285,7 @@ namespace COFTester.Services
         /// <summary>
         /// 绘制测试信息
         /// </summary>
-        private double DrawTestInfo(XGraphics gfx, double yPosition, TestParameters parameters, bool isChinese)
+        private double DrawTestInfo(XGraphics gfx, double yPosition, TestParameters parameters, string forceDisplayUnit, bool isChinese)
         {
             string fontFamily = GetFontFamily(isChinese);
             XFont sectionFont = new XFont(fontFamily, 14, XFontStyleEx.Bold);
@@ -299,6 +301,7 @@ namespace COFTester.Services
             {
                 $"测试标准: {parameters.Standard}",
                 $"滑块质量: {parameters.SledMass:F1} g",
+                $"力值单位: {forceDisplayUnit}",
                 $"测试速度: {parameters.TestSpeed:F1} mm/min",
                 $"测试行程: {parameters.TestStroke:F1} mm",
                 $"操作员: {parameters.Operator}"
@@ -306,6 +309,7 @@ namespace COFTester.Services
             {
                 $"Test Standard: {parameters.Standard}",
                 $"Sled Mass: {parameters.SledMass:F1} g",
+                $"Force Unit: {forceDisplayUnit}",
                 $"Test Speed: {parameters.TestSpeed:F1} mm/min",
                 $"Test Stroke: {parameters.TestStroke:F1} mm",
                 $"Operator: {parameters.Operator}"
@@ -403,7 +407,7 @@ namespace COFTester.Services
         /// 绘制详细测试结果
         /// </summary>
         private double DrawDetailedResults(XGraphics gfx, double yPosition, IEnumerable<TestResult> testRecords,
-            PdfDocument document, XGraphics currentGfx, PdfPage currentPage, bool isChinese)
+            string forceDisplayUnit, PdfDocument document, XGraphics currentGfx, PdfPage currentPage, bool isChinese)
         {
             string fontFamily = GetFontFamily(isChinese);
             XFont sectionFont = new XFont(fontFamily, 14, XFontStyleEx.Bold);
@@ -434,8 +438,8 @@ namespace COFTester.Services
             
             // 表头
             string[] headers = isChinese ?
-                new[] { "编号", "测试时间", "静摩擦", "动摩擦", "最大力", "平均力" } :
-                new[] { "No.", "Test Time", "Static", "Kinetic", "Max F", "Avg F" };
+                new[] { "编号", "测试时间", "静摩擦", "动摩擦", $"最大力({forceDisplayUnit})", $"平均力({forceDisplayUnit})" } :
+                new[] { "No.", "Test Time", "Static", "Kinetic", $"Max F ({forceDisplayUnit})", $"Avg F ({forceDisplayUnit})" };
             
             double currentX = tableX;
             for (int i = 0; i < headers.Length; i++)
@@ -474,8 +478,8 @@ namespace COFTester.Services
                     record.TestDateTime.ToString("MM-dd HH:mm"),
                     record.StaticCOF.ToString("F4"),
                     record.KineticCOF.ToString("F4"),
-                    record.MaxForce.ToString("F2") + " N",
-                    record.AvgKineticForce.ToString("F2") + " N"
+                    ConvertForceForDisplay(record.MaxForce, forceDisplayUnit).ToString("F2") + " " + forceDisplayUnit,
+                    ConvertForceForDisplay(record.AvgKineticForce, forceDisplayUnit).ToString("F2") + " " + forceDisplayUnit
                 };
                 
                 for (int i = 0; i < rowData.Length; i++)
@@ -555,6 +559,18 @@ namespace COFTester.Services
                 new XRect(0, footerY, PageWidth, 20),
                 XStringFormats.TopCenter);
         }
+
+        private static string NormalizeForceDisplayUnit(string? unit)
+        {
+            return string.Equals(unit, "g", StringComparison.OrdinalIgnoreCase) ? "g" : "N";
+        }
+
+        private static double ConvertForceForDisplay(double forceInNewton, string forceDisplayUnit)
+        {
+            return NormalizeForceDisplayUnit(forceDisplayUnit) == "g"
+                ? forceInNewton * 1000.0 / StandardGravity
+                : forceInNewton;
+        }
         
         /// <summary>
         /// 计算标准差
diff --git a/CSI-H238M/CSI-H238M/ViewModels/ViewModel.cs b/CSI-H238M/CSI-H238M/ViewModels/ViewModel.cs
index 66fcdbf..1256cf0 100644
--- a/CSI-H238M/CSI-H238M/ViewModels/ViewModel.cs
+++ b/CSI-H238M/CSI-H238M/ViewModels/ViewModel.cs
@@ -9,6 +9,7 @@ using System.Windows.Threading;
 using System.Windows;
 using System.Threading.Tasks;
 using System.Threading;
+using System.Globalization;
 using COFTester.Models;
 using COFTester.Services;
 using COFTester.Resources;
@@ -33,6 +34,7 @@ namespace COFTester.ViewModels
         private bool _isUiDataUpdateQueued;
         private long _lastPlotRefreshTick;
         private const int PlotRefreshIntervalMs = 100;
+        private const double StandardGravity = 9.80665;
         
         private double _currentForce;
         private double _currentDisp;
@@ -52,6 +54,8 @@ namespace COFTester.ViewModels
         private bool _stopRequestedByUser = false;
         private bool _acceptIncomingTestData = false;
         private int _testSessionId = 0;
+        private string _selectedSledMassPreset = "200";
+        private string _forceDisplayUnit = "N";
         private string _selectedDirection = ""; // 选中的方向：Up/Down/Right/Left
         private string _resetButtonText; // 复位按钮文本
         private string _testButtonText; // 测试按钮文本
@@ -100,6 +104,9 @@ namespace COFTester.ViewModels
             UpdateCustomParametersCommand = new AsyncRelayCommand(UpdateCustomParametersAsync, () => IsConnected && SelectedStandard == "Custom");
 
             Parameters = _config.DefaultTestParameters ?? new TestParameters();
+            Parameters.PropertyChanged += OnParametersPropertyChanged;
+            _forceDisplayUnit = NormalizeForceDisplayUnit(_config.ForceDisplayUnit);
+            SyncSledMassPresetFromValue();
             TestRecords = new ObservableCollection<TestResult>();
             TestRecords.CollectionChanged += (s, e) =>
             {
@@ -289,6 +296,69 @@ namespace COFTester.ViewModels
         /// 语言资源实例
         /// </summary>
         public LanguageResources Lang => LanguageResources.Instance;
+
+        public string ForceDisplayUnit
+        {
+            get => _forceDisplayUnit;
+            set
+            {
+                var normalizedUnit = NormalizeForceDisplayUnit(value);
+                if (_forceDisplayUnit == normalizedUnit)
+                {
+                    return;
+                }
+
+                _forceDisplayUnit = normalizedUnit;
+                _config.ForceDisplayUnit = normalizedUnit;
+                OnPropertyChanged();
+                NotifyForceDisplayChanged();
+                PersistSettings();
+                RefreshPlotForDisplaySettings();
+            }
+        }
+
+        public string ForceDisplayLabel =>
+            Lang.CurrentLanguage == "zh-CN" ? $"力值 ({ForceDisplayUnit})" : $"Force ({ForceDisplayUnit})";
+
+        public string ForceAxisLabel =>
+            Lang.CurrentLanguage == "zh-CN" ? $"力值 ({ForceDisplayUnit})" : $"Force ({ForceDisplayUnit})";
+
+        public string AvgPeelForceLabel =>
+            Lang.CurrentLanguage == "zh-CN" ? $"平均剥离力 ({ForceDisplayUnit})" : $"Avg Peel Force ({ForceDisplayUnit})";
+
+        public string PeelStrengthLabel =>
+            Lang.CurrentLanguage == "zh-CN" ? $"剥离强度 ({ForceDisplayUnit}/25mm)" : $"Peel Strength ({ForceDisplayUnit}/25mm)";
+
+        public string MaxForceLabel =>
+            Lang.CurrentLanguage == "zh-CN" ? $"最大力值 ({ForceDisplayUnit})" : $"Max Force ({ForceDisplayUnit})";
+
+        public string AvgForceDisplayLabel =>
+            Lang.CurrentLanguage == "zh-CN" ? $"平均力值 ({ForceDisplayUnit})" : $"Avg Force ({ForceDisplayUnit})";
+
+        public string SelectedSledMassPreset
+        {
+            get => _selectedSledMassPreset;
+            set
+            {
+                var normalizedPreset = string.IsNullOrWhiteSpace(value) ? "Custom" : value;
+                if (_selectedSledMassPreset == normalizedPreset)
+                {
+                    return;
+                }
+
+                _selectedSledMassPreset = normalizedPreset;
+                OnPropertyChanged();
+                OnPropertyChanged(nameof(IsCustomSledMass));
+
+                if (double.TryParse(normalizedPreset, NumberStyles.Float, CultureInfo.InvariantCulture, out double presetMass))
+                {
+                    Parameters.SledMass = presetMass;
+                    PersistSettings();
+                }
+            }
+        }
+
+        public bool IsCustomSledMass => SelectedSledMassPreset == "Custom";
         
         /// <summary>
         /// 初始化 ScottPlot 图表
@@ -310,7 +380,7 @@ namespace COFTester.ViewModels
             
             // 设置坐标轴标签（使用已设置的中文字体）
             _wpfPlot.Plot.XLabel(Lang.DisplacementAxis);
-            _wpfPlot.Plot.YLabel(Lang.ForceAxis);
+            _wpfPlot.Plot.YLabel(ForceAxisLabel);
             
             // 设置Y轴最小值为0
             _wpfPlot.Plot.Axes.SetLimitsY(0, 10);
@@ -389,7 +459,7 @@ namespace COFTester.ViewModels
             else
             {
                 var xData = _realTimePoints.Select(p => p.Displacement).ToArray();
-                var yData = _realTimePoints.Select(p => p.Force).ToArray();
+                var yData = _realTimePoints.Select(p => ConvertForceForDisplay(p.Force)).ToArray();
                 
                 // 创建新的散点图
                 _scatterPlot = _wpfPlot.Plot.Add.Scatter(xData, yData);
@@ -509,9 +579,16 @@ namespace COFTester.ViewModels
         public double CurrentForce
         {
             get => _currentForce;
-            set { _currentForce = value; OnPropertyChanged(); }
+            set
+            {
+                _currentForce = value;
+                OnPropertyChanged();
+                OnPropertyChanged(nameof(DisplayedCurrentForce));
+            }
         }
 
+        public double DisplayedCurrentForce => ConvertForceForDisplay(CurrentForce);
+
         public double CurrentDisp
         {
             get => _currentDisp;
@@ -545,9 +622,21 @@ namespace COFTester.ViewModels
         public TestResult? LatestResult
         {
             get => _latestResult;
-            set { _latestResult = value; OnPropertyChanged(); }
+            set
+            {
+                _latestResult = value;
+                OnPropertyChanged();
+                OnPropertyChanged(nameof(DisplayedLatestAvgKineticForce));
+                OnPropertyChanged(nameof(DisplayedLatestPeelStrength));
+            }
         }
 
+        public double? DisplayedLatestAvgKineticForce =>
+            LatestResult == null ? null : ConvertForceForDisplay(LatestResult.AvgKineticForce);
+
+        public double? DisplayedLatestPeelStrength =>
+            LatestResult == null ? null : ConvertForceForDisplay(LatestResult.PeelStrength_N_25mm);
+
         public string StatusMessage
         {
             get => _statusMessage;
@@ -688,6 +777,7 @@ namespace COFTester.ViewModels
                 };
                 
                 // 添加到测试记录集合
+                result.ForceDisplayUnit = ForceDisplayUnit;
                 TestRecords.Add(result);
                 LatestResult = result;
                 
@@ -1552,7 +1642,7 @@ namespace COFTester.ViewModels
                 return;
             
             var xData = result.RawData.Select(p => p.Displacement).ToArray();
-            var yData = result.RawData.Select(p => p.Force).ToArray();
+            var yData = result.RawData.Select(p => ConvertForceForDisplay(p.Force)).ToArray();
             
             var scatter = _wpfPlot.Plot.Add.Scatter(xData, yData);
             scatter.LineWidth = 2;
@@ -1656,7 +1746,7 @@ namespace COFTester.ViewModels
             try
             {
                 var pdfService = new Services.PdfReportService();
-                pdfService.GenerateReport(filePath, TestRecords, Parameters);
+                pdfService.GenerateReport(filePath, TestRecords, Parameters, ForceDisplayUnit);
             }
             catch (Exception ex)
             {
@@ -1689,9 +1779,16 @@ namespace COFTester.ViewModels
             if (_wpfPlot != null)
             {
                 _wpfPlot.Plot.XLabel(Lang.DisplacementAxis);
-                _wpfPlot.Plot.YLabel(Lang.ForceAxis);
+                _wpfPlot.Plot.YLabel(ForceAxisLabel);
                 _wpfPlot.Refresh();
             }
+
+            OnPropertyChanged(nameof(ForceDisplayLabel));
+            OnPropertyChanged(nameof(ForceAxisLabel));
+            OnPropertyChanged(nameof(AvgPeelForceLabel));
+            OnPropertyChanged(nameof(PeelStrengthLabel));
+            OnPropertyChanged(nameof(MaxForceLabel));
+            OnPropertyChanged(nameof(AvgForceDisplayLabel));
             
             // 更新当前状态消息
             if (_statusMessage == "系统就绪" || _statusMessage == "System Ready")
@@ -1711,6 +1808,101 @@ namespace COFTester.ViewModels
                 TestButtonText = Lang.StartTest;
                 ResetButtonText = Lang.ResetSystem;
             }
+
+            PersistSettings();
+        }
+
+        private void OnParametersPropertyChanged(object? sender, PropertyChangedEventArgs e)
+        {
+            if (e.PropertyName == nameof(TestParameters.SledMass))
+            {
+                SyncSledMassPresetFromValue();
+                PersistSettings();
+            }
+        }
+
+        private void SyncSledMassPresetFromValue()
+        {
+            string preset = Math.Abs(Parameters.SledMass - 200.0) < 0.0001 ? "200"
+                : Math.Abs(Parameters.SledMass - 300.0) < 0.0001 ? "300"
+                : Math.Abs(Parameters.SledMass - 500.0) < 0.0001 ? "500"
+                : "Custom";
+
+            if (_selectedSledMassPreset != preset)
+            {
+                _selectedSledMassPreset = preset;
+                OnPropertyChanged(nameof(SelectedSledMassPreset));
+                OnPropertyChanged(nameof(IsCustomSledMass));
+            }
+        }
+
+        private double ConvertForceForDisplay(double forceInNewton)
+        {
+            return ForceDisplayUnit == "g"
+                ? forceInNewton * 1000.0 / StandardGravity
+                : forceInNewton;
+        }
+
+        private string NormalizeForceDisplayUnit(string? unit)
+        {
+            return string.Equals(unit, "g", StringComparison.OrdinalIgnoreCase) ? "g" : "N";
+        }
+
+        private void NotifyForceDisplayChanged()
+        {
+            OnPropertyChanged(nameof(DisplayedCurrentForce));
+            OnPropertyChanged(nameof(DisplayedLatestAvgKineticForce));
+            OnPropertyChanged(nameof(DisplayedLatestPeelStrength));
+            OnPropertyChanged(nameof(ForceDisplayLabel));
+            OnPropertyChanged(nameof(ForceAxisLabel));
+            OnPropertyChanged(nameof(AvgPeelForceLabel));
+            OnPropertyChanged(nameof(PeelStrengthLabel));
+            OnPropertyChanged(nameof(MaxForceLabel));
+            OnPropertyChanged(nameof(AvgForceDisplayLabel));
+
+            foreach (var record in TestRecords)
+            {
+                record.ForceDisplayUnit = ForceDisplayUnit;
+            }
+        }
+
+        private void RefreshPlotForDisplaySettings()
+        {
+            if (_wpfPlot == null)
+            {
+                return;
+            }
+
+            _scatterPlot = null;
+            _testCurves.Clear();
+            InitializeScottPlot();
+
+            foreach (var record in TestRecords)
+            {
+                AddCurveToPlot(record);
+            }
+
+            if (_realTimePoints.Count > 0)
+            {
+                UpdateScottPlot();
+            }
+
+            UpdateAllCurvesVisibility();
+        }
+
+        private void PersistSettings()
+        {
+            try
+            {
+                _config.DefaultTestParameters = Parameters;
+                _config.Language = Lang.CurrentLanguage;
+                _config.ForceDisplayUnit = ForceDisplayUnit;
+                _config.Save(AppConfig.GetDefaultConfigPath());
+            }
+            catch (Exception ex)
+            {
+                System.Diagnostics.Debug.WriteLine($"[ViewModel] 保存配置失败: {ex.Message}");
+            }
         }
 
         private void OpenConfig()
@@ -1865,6 +2057,7 @@ namespace COFTester.ViewModels
                     _daqService.DataReceived -= OnDataReceived;
                     _daqService.TestFinished -= OnTestFinished;
                     _daqService.ErrorOccurred -= OnErrorOccurred;
+                    Parameters.PropertyChanged -= OnParametersPropertyChanged;
 
                     // 停止測試
                     if (_isTesting)
diff --git a/CSI-H238M/CSI-H238M/Views/HistoryPage.xaml b/CSI-H238M/CSI-H238M/Views/HistoryPage.xaml
index ebe66cb..ebb5527 100644
--- a/CSI-H238M/CSI-H238M/Views/HistoryPage.xaml
+++ b/CSI-H238M/CSI-H238M/Views/HistoryPage.xaml
@@ -69,17 +69,17 @@
                                 </DataTemplate>
                             </DataGridTextColumn.HeaderTemplate>
                         </DataGridTextColumn>
-                        <DataGridTextColumn Binding="{Binding MaxForce, StringFormat={}{0:F3}}" Width="120">
+                        <DataGridTextColumn Binding="{Binding DisplayedMaxForce, StringFormat={}{0:F3}}" Width="120">
                             <DataGridTextColumn.HeaderTemplate>
                                 <DataTemplate>
-                                    <TextBlock Text="{Binding DataContext.Lang.MaxForce, RelativeSource={RelativeSource AncestorType=UserControl}}"/>
+                                    <TextBlock Text="{Binding DataContext.MaxForceLabel, RelativeSource={RelativeSource AncestorType=UserControl}}"/>
                                 </DataTemplate>
                             </DataGridTextColumn.HeaderTemplate>
                         </DataGridTextColumn>
-                        <DataGridTextColumn Binding="{Binding AvgKineticForce, StringFormat={}{0:F3}}" Width="120">
+                        <DataGridTextColumn Binding="{Binding DisplayedAvgKineticForce, StringFormat={}{0:F3}}" Width="120">
                             <DataGridTextColumn.HeaderTemplate>
                                 <DataTemplate>
-                                    <TextBlock Text="{Binding DataContext.Lang.AvgForce, RelativeSource={RelativeSource AncestorType=UserControl}}"/>
+                                    <TextBlock Text="{Binding DataContext.AvgForceDisplayLabel, RelativeSource={RelativeSource AncestorType=UserControl}}"/>
                                 </DataTemplate>
                             </DataGridTextColumn.HeaderTemplate>
                         </DataGridTextColumn>
diff --git a/CSI-H238M/CSI-H238M/Views/SettingsPage.xaml b/CSI-H238M/CSI-H238M/Views/SettingsPage.xaml
index 1c5e7b7..75d8f5d 100644
--- a/CSI-H238M/CSI-H238M/Views/SettingsPage.xaml
+++ b/CSI-H238M/CSI-H238M/Views/SettingsPage.xaml
@@ -53,17 +53,49 @@
                     </Grid>
                     
                     <!-- 质量选择 -->
-                    <TextBlock Text="滑块质量" Margin="0,10,0,5" FontSize="13" Foreground="{StaticResource GrayBrush}"/>
-                    <ComboBox SelectedValue="{Binding Parameters.SledMass, Mode=TwoWay}" 
+                    <TextBlock Text="滑块质量预设" Margin="0,10,0,5" FontSize="13" Foreground="{StaticResource GrayBrush}"/>
+                    <ComboBox SelectedValue="{Binding SelectedSledMassPreset, Mode=TwoWay}" 
                               SelectedValuePath="Tag"
                               Margin="0,0,0,15" 
                               Height="40" 
                               FontSize="13"
                               VerticalContentAlignment="Center"
                               BorderBrush="#E0E0E0">
-                        <ComboBoxItem Content="200 g" Tag="200" IsSelected="True"/>
+                        <ComboBoxItem Content="200 g" Tag="200"/>
                         <ComboBoxItem Content="300 g" Tag="300"/>
                         <ComboBoxItem Content="500 g" Tag="500"/>
+                        <ComboBoxItem Content="自定义" Tag="Custom"/>
+                    </ComboBox>
+
+                    <StackPanel Margin="0,0,0,15">
+                        <StackPanel.Style>
+                            <Style TargetType="StackPanel">
+                                <Setter Property="Visibility" Value="Collapsed"/>
+                                <Style.Triggers>
+                                    <DataTrigger Binding="{Binding IsCustomSledMass}" Value="True">
+                                        <Setter Property="Visibility" Value="Visible"/>
+                                    </DataTrigger>
+                                </Style.Triggers>
+                            </Style>
+                        </StackPanel.Style>
+                        <TextBlock Text="自定义滑块质量 (g)" Margin="0,0,0,5" FontSize="13" Foreground="{StaticResource GrayBrush}"/>
+                        <TextBox Text="{Binding Parameters.SledMass, StringFormat={}{0:F1}, Mode=TwoWay, UpdateSourceTrigger=LostFocus}"
+                                 Height="40"
+                                 VerticalContentAlignment="Center"
+                                 FontSize="13"
+                                 BorderBrush="#E0E0E0"/>
+                    </StackPanel>
+
+                    <TextBlock Text="力值显示单位" Margin="0,10,0,5" FontSize="13" Foreground="{StaticResource GrayBrush}"/>
+                    <ComboBox SelectedValue="{Binding ForceDisplayUnit, Mode=TwoWay}"
+                              SelectedValuePath="Tag"
+                              Margin="0,0,0,15"
+                              Height="40"
+                              FontSize="13"
+                              VerticalContentAlignment="Center"
+                              BorderBrush="#E0E0E0">
+                        <ComboBoxItem Content="N" Tag="N"/>
+                        <ComboBoxItem Content="g" Tag="g"/>
                     </ComboBox>
                     
                     <!-- 标准选择 -->
diff --git a/CSI-H238M/CSI-H238M/Views/TestPage.xaml b/CSI-H238M/CSI-H238M/Views/TestPage.xaml
index 8c2b28f..7e65436 100644
--- a/CSI-H238M/CSI-H238M/Views/TestPage.xaml
+++ b/CSI-H238M/CSI-H238M/Views/TestPage.xaml
@@ -88,13 +88,13 @@
                 <!-- 实时力值监控 - 工业仪表盘风格 -->
                 <Border Style="{StaticResource CardStyle}" Background="#0A192F">
                     <StackPanel>
-                        <TextBlock Text="{Binding Lang.Force}" FontSize="14" Foreground="#BDC3C7" HorizontalAlignment="Center" Margin="0,0,0,5"/>
+                        <TextBlock Text="{Binding ForceDisplayLabel}" FontSize="14" Foreground="#BDC3C7" HorizontalAlignment="Center" Margin="0,0,0,5"/>
                         <Border Background="#000000" CornerRadius="4" Padding="10" Margin="0,5">
                             <Viewbox Height="60">
-                                <TextBlock Text="{Binding CurrentForce, StringFormat={}{0:F4}}" Style="{StaticResource DigitalDisplayStyle}"/>
+                                <TextBlock Text="{Binding DisplayedCurrentForce, StringFormat={}{0:F4}}" Style="{StaticResource DigitalDisplayStyle}"/>
                             </Viewbox>
                         </Border>
-                        <TextBlock Text="N" FontSize="12" Foreground="#7F8C8D" HorizontalAlignment="Center"/>
+                        <TextBlock Text="{Binding ForceDisplayUnit}" FontSize="12" Foreground="#7F8C8D" HorizontalAlignment="Center"/>
                     </StackPanel>
                 </Border>
 
@@ -151,13 +151,13 @@
                     <StackPanel>
                         <TextBlock Text="{Binding Lang.TestResults}" FontWeight="Bold" FontSize="14" Foreground="#2C3E50" Margin="0,0,0,10"/>
                         
-                        <TextBlock Text="{Binding Lang.PeelStrength}" FontSize="11" Foreground="#7F8C8D"/>
-                        <TextBlock Text="{Binding LatestResult.PeelStrength_N_25mm, StringFormat={}{0:F3}, FallbackValue=--}" FontSize="32" FontWeight="Bold" Foreground="#27AE60" HorizontalAlignment="Center"/>
+                        <TextBlock Text="{Binding PeelStrengthLabel}" FontSize="11" Foreground="#7F8C8D"/>
+                        <TextBlock Text="{Binding DisplayedLatestPeelStrength, StringFormat={}{0:F3}, FallbackValue=--}" FontSize="32" FontWeight="Bold" Foreground="#27AE60" HorizontalAlignment="Center"/>
                         
                         <Separator Margin="0,10"/>
                         
-                        <TextBlock Text="{Binding Lang.AvgPeelForce}" FontSize="11" Foreground="#7F8C8D"/>
-                        <TextBlock Text="{Binding LatestResult.AvgKineticForce, StringFormat={}{0:F3}, FallbackValue=--}" FontSize="28" FontWeight="Bold" Foreground="#3498DB" HorizontalAlignment="Center"/>
+                        <TextBlock Text="{Binding AvgPeelForceLabel}" FontSize="11" Foreground="#7F8C8D"/>
+                        <TextBlock Text="{Binding DisplayedLatestAvgKineticForce, StringFormat={}{0:F3}, FallbackValue=--}" FontSize="28" FontWeight="Bold" Foreground="#3498DB" HorizontalAlignment="Center"/>
                     </StackPanel>
                 </Border>