diff --git a/Helpers/DatabaseService.cs b/Helpers/DatabaseService.cs
index 26e3bae..81fc69c 100644
--- a/Helpers/DatabaseService.cs
+++ b/Helpers/DatabaseService.cs
@@ -84,5 +84,16 @@ namespace TabletTester2025.Services
             query = query.OrderByDescending(b => b.TestTime).Take(limit);
             return query.ToList();
         }
+
+        public void DeleteBatch(int id)
+        {
+            using var db = new AppDbContext(_connectionString);
+            var batch = db.TestBatches.Find(id);
+            if (batch != null)
+            {
+                db.TestBatches.Remove(batch);
+                db.SaveChanges();
+            }
+        }
     }
 }
diff --git a/Services/ExcelExportService.cs b/Services/ExcelExportService.cs
index c13a32b..3936c61 100644
--- a/Services/ExcelExportService.cs
+++ b/Services/ExcelExportService.cs
@@ -60,7 +60,7 @@ namespace TabletTester2025.Services
         {
             var data = batches.ToList();
             var sheet = package.Workbook.Worksheets.Add("硬度报表");
-            WriteHeader(sheet, "检测时间", "样品名称", "平均值(N)", "平均偏差(N)", "RSD(%)", "最大值(N)", "最小值(N)", "测试次数", "单次数据(N)", "内控下限(N)", "内控上限(N)", "判定");
+            WriteHeader(sheet, "检测时间", "样品名称", "平均值(N)", "平均偏差(N)", "RSD(%)", "最大值(N)", "最小值(N)", "测试次数", "单次数据(N)", "判定");
 
             if (data.Count == 0)
             {
@@ -81,9 +81,7 @@ namespace TabletTester2025.Services
                 sheet.Cells[row, 7].Value = b.HardnessMin;
                 sheet.Cells[row, 8].Value = b.HardnessTestCount;
                 sheet.Cells[row, 9].Value = b.HardnessSampleSummary;
-                sheet.Cells[row, 10].Value = b.HardnessInternalMin;
-                sheet.Cells[row, 11].Value = b.HardnessInternalMax;
-                sheet.Cells[row, 12].Value = b.HardnessPassText;
+                sheet.Cells[row, 10].Value = b.HardnessPassText;
                 row++;
             }
 
@@ -150,7 +148,7 @@ namespace TabletTester2025.Services
         {
             var data = batches.ToList();
             var sheet = package.Workbook.Worksheets.Add("崩解报表");
-            WriteHeader(sheet, "检测时间", "样品名称", "剂型规格", "时限(秒)", "崩解时间(秒)", "剩余未崩解管", "水浴温度(℃)", "判定");
+            WriteHeader(sheet, "检测时间", "样品名称", "崩解时间(秒)", "水浴温度(℃)", "判定");
 
             if (data.Count == 0)
             {
@@ -164,12 +162,9 @@ namespace TabletTester2025.Services
             {
                 sheet.Cells[row, 1].Value = b.TestTime.ToString("yyyy-MM-dd HH:mm:ss");
                 sheet.Cells[row, 2].Value = b.SampleName;
-                sheet.Cells[row, 3].Value = b.DisintegrationDosageForm;
-                sheet.Cells[row, 4].Value = b.DisintegrationLimitSeconds;
-                sheet.Cells[row, 5].Value = b.DisintegrationTimeSec;
-                sheet.Cells[row, 6].Value = b.RemainingTubesAtEnd;
-                sheet.Cells[row, 7].Value = b.DisintegrationTemp;
-                sheet.Cells[row, 8].Value = b.DisintegrationPassText;
+                sheet.Cells[row, 3].Value = b.DisintegrationTimeSec;
+                sheet.Cells[row, 4].Value = b.DisintegrationTemp;
+                sheet.Cells[row, 5].Value = b.DisintegrationPassText;
                 row++;
             }
 
diff --git a/ViewModels/HardnessDisplaySamplePoint.cs b/ViewModels/HardnessDisplaySamplePoint.cs
index 8d5ae75..96c7ca9 100644
--- a/ViewModels/HardnessDisplaySamplePoint.cs
+++ b/ViewModels/HardnessDisplaySamplePoint.cs
@@ -14,6 +14,13 @@ namespace TabletTester2025.ViewModels
         private double _groupAverageDeviation;
         private double _groupRSD;
         private DateTime _recordedAt;
+        private bool _isSummaryRow;
+
+        public bool IsSummaryRow
+        {
+            get => _isSummaryRow;
+            set => SetProperty(ref _isSummaryRow, value);
+        }
 
         public int GroupNo
         {
diff --git a/ViewModels/StationViewModel.cs b/ViewModels/StationViewModel.cs
index f71d4a2..4cc4b1f 100644
--- a/ViewModels/StationViewModel.cs
+++ b/ViewModels/StationViewModel.cs
@@ -1625,6 +1625,7 @@ namespace TabletTester2025.ViewModels
                     throw new InvalidOperationException("硬度测试已停止，未保存结果");
 
                 ApplyHardnessStatistics(count);
+                AddHardnessGroupSummaryRow();
                 resultReady = true;
             }
             catch (Exception ex)
@@ -1775,6 +1776,29 @@ namespace TabletTester2025.ViewModels
             }
         }
 
+        private void AddHardnessGroupSummaryRow()
+        {
+            var stats = TestCalculationService.CalculateHardness(
+                _hardnessResults,
+                HardnessInternalMin,
+                HardnessInternalMax,
+                _hardnessResults.Count);
+
+            HardnessDisplaySamplePoints.Add(new HardnessDisplaySamplePoint
+            {
+                IsSummaryRow = true,
+                GroupNo = _currentHardnessGroupNo,
+                CumulativeNo = 0,
+                SequenceNo = 0,
+                Value = 0,
+                DeviationFromAverage = 0,
+                GroupAverage = stats.Average,
+                GroupAverageDeviation = stats.AverageDeviation,
+                GroupRSD = stats.RsdPercent,
+                RecordedAt = DateTime.MinValue
+            });
+        }
+
         /// 脆碎度测试主逻辑（实时状态显示）
 
         private async Task RunFriabilityAsync()
diff --git a/Views/HistoryWindow.xaml b/Views/HistoryWindow.xaml
index b172c21..e41a920 100644
--- a/Views/HistoryWindow.xaml
+++ b/Views/HistoryWindow.xaml
@@ -79,7 +79,7 @@
             <Setter Property="Template">
                 <Setter.Value>
                     <ControlTemplate TargetType="Button">
-                        <Border Background="{TemplateBinding Background}" CornerRadius="6" 
+                        <Border Background="{TemplateBinding Background}" CornerRadius="6"
                                 BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="1"
                                 Padding="12,0">
                             <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
@@ -94,6 +94,28 @@
             </Setter>
         </Style>
 
+        <Style TargetType="Button" x:Key="DangerButton" BasedOn="{StaticResource ActionButton}">
+            <Setter Property="Background" Value="#DC2626"/>
+            <Setter Property="Foreground" Value="White"/>
+            <Setter Property="BorderBrush" Value="#DC2626"/>
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="Button">
+                        <Border Background="{TemplateBinding Background}" CornerRadius="6"
+                                BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="1"
+                                Padding="12,0">
+                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                        </Border>
+                        <ControlTemplate.Triggers>
+                            <Trigger Property="IsMouseOver" Value="True">
+                                <Setter Property="Background" Value="#B91C1C"/>
+                            </Trigger>
+                        </ControlTemplate.Triggers>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+
         <!-- TabControl 样式 -->
         <Style TargetType="TabControl">
             <Setter Property="Background" Value="Transparent"/>
@@ -163,8 +185,12 @@
                             <RowDefinition Height="Auto"/>
                             <RowDefinition Height="*"/>
                         </Grid.RowDefinitions>
-                        <Button Grid.Row="0" Content="📎 导出硬度报表" Style="{StaticResource ExportButton}" 
-                                Width="140" HorizontalAlignment="Right" Margin="0,0,0,12" Click="ExportHardness_Click"/>
+                        <StackPanel Grid.Row="0" Orientation="Horizontal" HorizontalAlignment="Right" Margin="0,0,0,12">
+                            <Button Content="🗑️ 删除选中" Style="{StaticResource DangerButton}"
+                                    Width="120" Margin="0,0,8,0" Click="DeleteHardness_Click"/>
+                            <Button Content="📎 导出硬度报表" Style="{StaticResource ExportButton}"
+                                    Width="140" Click="ExportHardness_Click"/>
+                        </StackPanel>
                         <DataGrid x:Name="HardnessGrid" Grid.Row="1">
                             <DataGrid.Columns>
                                 <DataGridTextColumn Header="检测时间" Binding="{Binding TestTime, StringFormat=yyyy-MM-dd HH:mm:ss}" Width="160"/>
@@ -176,8 +202,6 @@
                                 <DataGridTextColumn Header="最小值(N)" Binding="{Binding HardnessMin, StringFormat=F1}" Width="90"/>
                                 <DataGridTextColumn Header="测试次数" Binding="{Binding HardnessTestCount}" Width="70"/>
                                 <DataGridTextColumn Header="单次数据(N)" Binding="{Binding HardnessSampleSummary}" Width="220"/>
-                                <DataGridTextColumn Header="内控下限(N)" Binding="{Binding HardnessInternalMin, StringFormat=F1}" Width="100"/>
-                                <DataGridTextColumn Header="内控上限(N)" Binding="{Binding HardnessInternalMax, StringFormat=F1}" Width="100"/>
                                 <DataGridTextColumn Header="判定" Binding="{Binding HardnessPassText}" Width="70"/>
                             </DataGrid.Columns>
                         </DataGrid>
@@ -191,8 +215,12 @@
                             <RowDefinition Height="Auto"/>
                             <RowDefinition Height="*"/>
                         </Grid.RowDefinitions>
-                        <Button Grid.Row="0" Content="📎 导出脆碎度报表" Style="{StaticResource ExportButton}" 
-                                Width="150" HorizontalAlignment="Right" Margin="0,0,0,12" Click="ExportFriability_Click"/>
+                        <StackPanel Grid.Row="0" Orientation="Horizontal" HorizontalAlignment="Right" Margin="0,0,0,12">
+                            <Button Content="🗑️ 删除选中" Style="{StaticResource DangerButton}"
+                                    Width="120" Margin="0,0,8,0" Click="DeleteFriability_Click"/>
+                            <Button Content="📎 导出脆碎度报表" Style="{StaticResource ExportButton}"
+                                    Width="150" Click="ExportFriability_Click"/>
+                        </StackPanel>
                         <DataGrid x:Name="FriabilityGrid" Grid.Row="1">
                             <DataGrid.Columns>
                                 <DataGridTextColumn Header="检测时间" Binding="{Binding TestTime, StringFormat=yyyy-MM-dd HH:mm:ss}" Width="160"/>
@@ -216,16 +244,17 @@
                             <RowDefinition Height="Auto"/>
                             <RowDefinition Height="*"/>
                         </Grid.RowDefinitions>
-                        <Button Grid.Row="0" Content="📎 导出崩解报表" Style="{StaticResource ExportButton}" 
-                                Width="150" HorizontalAlignment="Right" Margin="0,0,0,12" Click="ExportDisintegration_Click"/>
+                        <StackPanel Grid.Row="0" Orientation="Horizontal" HorizontalAlignment="Right" Margin="0,0,0,12">
+                            <Button Content="🗑️ 删除选中" Style="{StaticResource DangerButton}"
+                                    Width="120" Margin="0,0,8,0" Click="DeleteDisintegration_Click"/>
+                            <Button Content="📎 导出崩解报表" Style="{StaticResource ExportButton}"
+                                    Width="150" Click="ExportDisintegration_Click"/>
+                        </StackPanel>
                         <DataGrid x:Name="DisintegrationGrid" Grid.Row="1">
                             <DataGrid.Columns>
                                 <DataGridTextColumn Header="检测时间" Binding="{Binding TestTime, StringFormat=yyyy-MM-dd HH:mm:ss}" Width="160"/>
                                 <DataGridTextColumn Header="样品名称" Binding="{Binding SampleName}" Width="120"/>
-                                <DataGridTextColumn Header="剂型规格" Binding="{Binding DisintegrationDosageForm}" Width="100"/>
-                                <DataGridTextColumn Header="时限(秒)" Binding="{Binding DisintegrationLimitSeconds}" Width="80"/>
                                 <DataGridTextColumn Header="崩解时间(秒)" Binding="{Binding DisintegrationTimeSec}" Width="100"/>
-                                <DataGridTextColumn Header="剩余未崩解管" Binding="{Binding RemainingTubesAtEnd}" Width="110"/>
                                 <DataGridTextColumn Header="水浴温度(℃)" Binding="{Binding DisintegrationTemp, StringFormat=F1}" Width="110"/>
                                 <DataGridTextColumn Header="判定" Binding="{Binding DisintegrationPassText}" Width="70"/>
                             </DataGrid.Columns>
@@ -240,8 +269,12 @@
                             <RowDefinition Height="Auto"/>
                             <RowDefinition Height="*"/>
                         </Grid.RowDefinitions>
-                        <Button Grid.Row="0" Content="📎 导出溶出报表" Style="{StaticResource ExportButton}" 
-                                Width="150" HorizontalAlignment="Right" Margin="0,0,0,12" Click="ExportDissolution_Click"/>
+                        <StackPanel Grid.Row="0" Orientation="Horizontal" HorizontalAlignment="Right" Margin="0,0,0,12">
+                            <Button Content="🗑️ 删除选中" Style="{StaticResource DangerButton}"
+                                    Width="120" Margin="0,0,8,0" Click="DeleteDissolution_Click"/>
+                            <Button Content="📎 导出溶出报表" Style="{StaticResource ExportButton}"
+                                    Width="150" Click="ExportDissolution_Click"/>
+                        </StackPanel>
                         <DataGrid x:Name="DissolutionGrid" Grid.Row="1">
                             <DataGrid.Columns>
                                 <DataGridTextColumn Header="检测时间" Binding="{Binding TestTime, StringFormat=yyyy-MM-dd HH:mm:ss}" Width="160"/>
diff --git a/Views/HistoryWindow.xaml.cs b/Views/HistoryWindow.xaml.cs
index c545d31..50612fc 100644
--- a/Views/HistoryWindow.xaml.cs
+++ b/Views/HistoryWindow.xaml.cs
@@ -43,6 +43,66 @@ namespace TabletTester2025
             LoadData();
         }
 
+        private void DeleteHardness_Click(object sender, RoutedEventArgs e)
+        {
+            if (HardnessGrid.SelectedItem is not TestBatch batch)
+            {
+                MessageBox.Show("请先选择一条记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                return;
+            }
+            var result = MessageBox.Show($"确定要删除该记录吗？\n检测时间：{batch.TestTime:yyyy-MM-dd HH:mm:ss}",
+                "确认删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            if (result != MessageBoxResult.Yes)
+                return;
+            _dbService.DeleteBatch(batch.Id);
+            LoadData();
+        }
+
+        private void DeleteFriability_Click(object sender, RoutedEventArgs e)
+        {
+            if (FriabilityGrid.SelectedItem is not TestBatch batch)
+            {
+                MessageBox.Show("请先选择一条记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                return;
+            }
+            var result = MessageBox.Show($"确定要删除该记录吗？\n检测时间：{batch.TestTime:yyyy-MM-dd HH:mm:ss}",
+                "确认删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            if (result != MessageBoxResult.Yes)
+                return;
+            _dbService.DeleteBatch(batch.Id);
+            LoadData();
+        }
+
+        private void DeleteDisintegration_Click(object sender, RoutedEventArgs e)
+        {
+            if (DisintegrationGrid.SelectedItem is not TestBatch batch)
+            {
+                MessageBox.Show("请先选择一条记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                return;
+            }
+            var result = MessageBox.Show($"确定要删除该记录吗？\n检测时间：{batch.TestTime:yyyy-MM-dd HH:mm:ss}",
+                "确认删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            if (result != MessageBoxResult.Yes)
+                return;
+            _dbService.DeleteBatch(batch.Id);
+            LoadData();
+        }
+
+        private void DeleteDissolution_Click(object sender, RoutedEventArgs e)
+        {
+            if (DissolutionGrid.SelectedItem is not TestBatch batch)
+            {
+                MessageBox.Show("请先选择一条记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                return;
+            }
+            var result = MessageBox.Show($"确定要删除该记录吗？\n检测时间：{batch.TestTime:yyyy-MM-dd HH:mm:ss}",
+                "确认删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            if (result != MessageBoxResult.Yes)
+                return;
+            _dbService.DeleteBatch(batch.Id);
+            LoadData();
+        }
+
         private void ExportHardness_Click(object sender, RoutedEventArgs e)
         {
             var data = HardnessGrid.ItemsSource as IEnumerable<TestBatch>;
diff --git a/Views/MainWindow.xaml b/Views/MainWindow.xaml
index 9d1ce12..858031f 100644
--- a/Views/MainWindow.xaml
+++ b/Views/MainWindow.xaml
@@ -353,16 +353,106 @@
                                                   MinHeight="160"
                                                   ScrollViewer.VerticalScrollBarVisibility="Auto"
                                                   ScrollViewer.HorizontalScrollBarVisibility="Auto">
+                                            <DataGrid.RowStyle>
+                                                <Style TargetType="DataGridRow" BasedOn="{StaticResource {x:Type DataGridRow}}">
+                                                    <Style.Triggers>
+                                                        <DataTrigger Binding="{Binding IsSummaryRow}" Value="True">
+                                                            <Setter Property="Background" Value="#DBEAFE"/>
+                                                            <Setter Property="FontWeight" Value="Bold"/>
+                                                        </DataTrigger>
+                                                    </Style.Triggers>
+                                                </Style>
+                                            </DataGrid.RowStyle>
                                             <DataGrid.Columns>
-                                                <DataGridTextColumn Header="累计次数" Binding="{Binding CumulativeNo}" Width="85"/>
+                                                <DataGridTemplateColumn Header="累计次数" Width="85">
+                                                    <DataGridTemplateColumn.CellTemplate>
+                                                        <DataTemplate>
+                                                            <TextBlock Text="{Binding CumulativeNo}" HorizontalAlignment="Center" VerticalAlignment="Center">
+                                                                <TextBlock.Style>
+                                                                    <Style TargetType="TextBlock">
+                                                                        <Style.Triggers>
+                                                                            <DataTrigger Binding="{Binding IsSummaryRow}" Value="True">
+                                                                                <Setter Property="Text" Value=""/>
+                                                                            </DataTrigger>
+                                                                        </Style.Triggers>
+                                                                    </Style>
+                                                                </TextBlock.Style>
+                                                            </TextBlock>
+                                                        </DataTemplate>
+                                                    </DataGridTemplateColumn.CellTemplate>
+                                                </DataGridTemplateColumn>
                                                 <DataGridTextColumn Header="组号" Binding="{Binding GroupNo}" Width="65"/>
-                                                <DataGridTextColumn Header="组内序号" Binding="{Binding SequenceNo}" Width="80"/>
-                                                <DataGridTextColumn Header="硬度值(N)" Binding="{Binding Value, StringFormat=F1}" Width="95"/>
-                                                <DataGridTextColumn Header="与平均值偏差(N)" Binding="{Binding DeviationFromAverage, StringFormat=F2}" Width="125"/>
+                                                <DataGridTemplateColumn Header="组内序号" Width="80">
+                                                    <DataGridTemplateColumn.CellTemplate>
+                                                        <DataTemplate>
+                                                            <TextBlock Text="{Binding SequenceNo}" HorizontalAlignment="Center" VerticalAlignment="Center">
+                                                                <TextBlock.Style>
+                                                                    <Style TargetType="TextBlock">
+                                                                        <Style.Triggers>
+                                                                            <DataTrigger Binding="{Binding IsSummaryRow}" Value="True">
+                                                                                <Setter Property="Text" Value=""/>
+                                                                            </DataTrigger>
+                                                                        </Style.Triggers>
+                                                                    </Style>
+                                                                </TextBlock.Style>
+                                                            </TextBlock>
+                                                        </DataTemplate>
+                                                    </DataGridTemplateColumn.CellTemplate>
+                                                </DataGridTemplateColumn>
+                                                <DataGridTemplateColumn Header="硬度值(N)" Width="95">
+                                                    <DataGridTemplateColumn.CellTemplate>
+                                                        <DataTemplate>
+                                                            <TextBlock Text="{Binding Value, StringFormat=F1}" HorizontalAlignment="Center" VerticalAlignment="Center">
+                                                                <TextBlock.Style>
+                                                                    <Style TargetType="TextBlock">
+                                                                        <Style.Triggers>
+                                                                            <DataTrigger Binding="{Binding IsSummaryRow}" Value="True">
+                                                                                <Setter Property="Text" Value=""/>
+                                                                            </DataTrigger>
+                                                                        </Style.Triggers>
+                                                                    </Style>
+                                                                </TextBlock.Style>
+                                                            </TextBlock>
+                                                        </DataTemplate>
+                                                    </DataGridTemplateColumn.CellTemplate>
+                                                </DataGridTemplateColumn>
+                                                <DataGridTemplateColumn Header="与平均值偏差(N)" Width="125">
+                                                    <DataGridTemplateColumn.CellTemplate>
+                                                        <DataTemplate>
+                                                            <TextBlock Text="{Binding DeviationFromAverage, StringFormat=F2}" HorizontalAlignment="Center" VerticalAlignment="Center">
+                                                                <TextBlock.Style>
+                                                                    <Style TargetType="TextBlock">
+                                                                        <Style.Triggers>
+                                                                            <DataTrigger Binding="{Binding IsSummaryRow}" Value="True">
+                                                                                <Setter Property="Text" Value=""/>
+                                                                            </DataTrigger>
+                                                                        </Style.Triggers>
+                                                                    </Style>
+                                                                </TextBlock.Style>
+                                                            </TextBlock>
+                                                        </DataTemplate>
+                                                    </DataGridTemplateColumn.CellTemplate>
+                                                </DataGridTemplateColumn>
                                                 <DataGridTextColumn Header="组平均值(N)" Binding="{Binding GroupAverage, StringFormat=F1}" Width="105"/>
                                                 <DataGridTextColumn Header="组平均偏差(N)" Binding="{Binding GroupAverageDeviation, StringFormat=F2}" Width="120"/>
                                                 <DataGridTextColumn Header="组RSD(%)" Binding="{Binding GroupRSD, StringFormat=F2}" Width="95"/>
-                                                <DataGridTextColumn Header="记录时间" Binding="{Binding RecordedAt, StringFormat=HH:mm:ss}" Width="105"/>
+                                                <DataGridTemplateColumn Header="记录时间" Width="105">
+                                                    <DataGridTemplateColumn.CellTemplate>
+                                                        <DataTemplate>
+                                                            <TextBlock Text="{Binding RecordedAt, StringFormat=HH:mm:ss}" HorizontalAlignment="Center" VerticalAlignment="Center">
+                                                                <TextBlock.Style>
+                                                                    <Style TargetType="TextBlock">
+                                                                        <Style.Triggers>
+                                                                            <DataTrigger Binding="{Binding IsSummaryRow}" Value="True">
+                                                                                <Setter Property="Text" Value=""/>
+                                                                            </DataTrigger>
+                                                                        </Style.Triggers>
+                                                                    </Style>
+                                                                </TextBlock.Style>
+                                                            </TextBlock>
+                                                        </DataTemplate>
+                                                    </DataGridTemplateColumn.CellTemplate>
+                                                </DataGridTemplateColumn>
                                             </DataGrid.Columns>
                                         </DataGrid>
                                     </Grid>