diff --git a/PersonalToolBox.Tests/ViewModels/CategoryEditViewModelTests.cs b/PersonalToolBox.Tests/ViewModels/CategoryEditViewModelTests.cs
new file mode 100644
index 0000000..fe00357
--- /dev/null
+++ b/PersonalToolBox.Tests/ViewModels/CategoryEditViewModelTests.cs
@@ -0,0 +1,94 @@
+using Moq;
+using PersonalToolBox.Models;
+using PersonalToolBox.Services;
+using PersonalToolBox.ViewModels;
+
+namespace PersonalToolBox.Tests.ViewModels;
+
+public class CategoryEditViewModelTests
+{
+    private readonly Mock<IDataService> _dataServiceMock = new();
+    private readonly Mock<ILogService> _logServiceMock = new();
+    private readonly AppConfig _config;
+
+    public CategoryEditViewModelTests()
+    {
+        _config = new AppConfig();
+        _dataServiceMock.Setup(d => d.Config).Returns(_config);
+    }
+
+    [Fact]
+    public void Constructor_AddMode_SetsTitle()
+    {
+        var vm = new CategoryEditViewModel(_dataServiceMock.Object, _logServiceMock.Object);
+
+        Assert.Equal("添加分类", vm.WindowTitle);
+        Assert.Empty(vm.Name);
+    }
+
+    [Fact]
+    public void Constructor_EditMode_SetsTitleAndName()
+    {
+        var cat = new Category { Name = "开发工具" };
+        var vm = new CategoryEditViewModel(_dataServiceMock.Object, _logServiceMock.Object, cat);
+
+        Assert.Equal("编辑分类", vm.WindowTitle);
+        Assert.Equal("开发工具", vm.Name);
+    }
+
+    [Fact]
+    public void Save_EmptyName_LogsWarning()
+    {
+        var vm = new CategoryEditViewModel(_dataServiceMock.Object, _logServiceMock.Object);
+
+        vm.SaveCommand.Execute(null);
+
+        _logServiceMock.Verify(x => x.Warning(It.Is<string>(s => s.Contains("名称不能为空"))), Times.Once);
+    }
+
+    [Fact]
+    public void Save_AddMode_AddsCategoryAndCloses()
+    {
+        var vm = new CategoryEditViewModel(_dataServiceMock.Object, _logServiceMock.Object) { Name = "新分类" };
+        bool? closeResult = null;
+        vm.CloseAction = (r) => closeResult = r;
+
+        vm.SaveCommand.Execute(null);
+
+        Assert.True(vm.Saved);
+        Assert.True(closeResult);
+        Assert.Single(_config.Categories);
+        Assert.Equal("新分类", _config.Categories[0].Name);
+        _dataServiceMock.Verify(x => x.Save(), Times.Once);
+    }
+
+    [Fact]
+    public void Save_EditMode_UpdatesCategoryAndCloses()
+    {
+        var cat = new Category { Name = "旧名称" };
+        var vm = new CategoryEditViewModel(_dataServiceMock.Object, _logServiceMock.Object, cat) { Name = "新名称" };
+        bool? closeResult = null;
+        vm.CloseAction = (r) => closeResult = r;
+
+        vm.SaveCommand.Execute(null);
+
+        Assert.True(vm.Saved);
+        Assert.True(closeResult);
+        Assert.Equal("新名称", cat.Name);
+        _dataServiceMock.Verify(x => x.Save(), Times.Once);
+    }
+
+    [Fact]
+    public void Cancel_ClosesWithoutSaving()
+    {
+        var vm = new CategoryEditViewModel(_dataServiceMock.Object, _logServiceMock.Object);
+        bool? closeResult = null;
+        vm.CloseAction = (r) => closeResult = r;
+
+        vm.CancelCommand.Execute(null);
+
+        Assert.False(vm.Saved);
+        Assert.False(closeResult);
+        _dataServiceMock.Verify(x => x.Save(), Times.Never);
+    }
+}
diff --git a/PersonalToolBox/App.xaml.cs b/PersonalToolBox/App.xaml.cs
index 08f2458..b70e649 100644
--- a/PersonalToolBox/App.xaml.cs
+++ b/PersonalToolBox/App.xaml.cs
@@ -70,6 +70,7 @@ public partial class App : Application
         services.AddSingleton<IProcessExecutionService, ProcessExecutionService>();
         services.AddSingleton<ViewModels.MainViewModel>();
         services.AddTransient<ViewModels.ToolEditViewModel>();
+        services.AddTransient<ViewModels.CategoryEditViewModel>();
         services.AddSingleton<MainWindow>();
     }
 
diff --git a/PersonalToolBox/ViewModels/CategoryEditViewModel.cs b/PersonalToolBox/ViewModels/CategoryEditViewModel.cs
new file mode 100644
index 0000000..6e8db66
--- /dev/null
+++ b/PersonalToolBox/ViewModels/CategoryEditViewModel.cs
@@ -0,0 +1,80 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using PersonalToolBox.Models;
+using PersonalToolBox.Services;
+
+namespace PersonalToolBox.ViewModels;
+
+/// <summary>
+/// 分类编辑窗口 ViewModel，管理添加/编辑分类的交互逻辑
+/// </summary>
+public partial class CategoryEditViewModel : ObservableObject
+{
+    private readonly IDataService _dataService;
+    private readonly ILogService _logService;
+    private readonly Category? _editingCategory;
+
+    [ObservableProperty]
+    private string _windowTitle = "添加分类";
+
+    [ObservableProperty]
+    private string _name = string.Empty;
+
+    public Action<bool?>? CloseAction { get; set; }
+    public bool Saved { get; private set; }
+
+    public CategoryEditViewModel(IDataService dataService, ILogService logService, Category? categoryToEdit = null)
+    {
+        _dataService = dataService;
+        _logService = logService;
+        _editingCategory = categoryToEdit;
+
+        if (categoryToEdit != null)
+        {
+            WindowTitle = "编辑分类";
+            Name = categoryToEdit.Name;
+        }
+    }
+
+    [RelayCommand]
+    private void Save()
+    {
+        try
+        {
+            if (string.IsNullOrWhiteSpace(Name))
+            {
+                _logService.Warning("分类名称不能为空");
+                return;
+            }
+
+            if (_editingCategory != null)
+            {
+                _editingCategory.Name = Name.Trim();
+                _logService.Info($"已更新分类: {Name.Trim()}");
+            }
+            else
+            {
+                _dataService.Config.Categories.Add(new Category
+                {
+                    Id = Guid.NewGuid().ToString(),
+                    Name = Name.Trim()
+                });
+                _logService.Info($"已添加分类: {Name.Trim()}");
+            }
+
+            _dataService.Save();
+            Saved = true;
+            CloseAction?.Invoke(true);
+        }
+        catch (Exception ex)
+        {
+            _logService.Error($"保存分类失败: {ex.Message}");
+        }
+    }
+
+    [RelayCommand]
+    private void Cancel()
+    {
+        CloseAction?.Invoke(false);
+    }
+}
diff --git a/PersonalToolBox/ViewModels/MainViewModel.cs b/PersonalToolBox/ViewModels/MainViewModel.cs
index 7539af3..c9760e6 100644
--- a/PersonalToolBox/ViewModels/MainViewModel.cs
+++ b/PersonalToolBox/ViewModels/MainViewModel.cs
@@ -1,5 +1,6 @@
 using System.Collections.ObjectModel;
 using System.Linq;
+using System.Windows;
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
 using Microsoft.Extensions.DependencyInjection;
@@ -121,6 +122,63 @@ public partial class MainViewModel : ObservableObject
         _processService.Execute(tool);
     }
 
+    // ───────────────────────────── 分类管理命令 ─────────────────────────────
+
+    /// <summary>
+    /// 添加分类
+    /// </summary>
+    [RelayCommand]
+    private void AddCategory()
+    {
+        var vm = _serviceProvider.GetRequiredService<CategoryEditViewModel>();
+        var window = new CategoryEditWindow(vm);
+        window.ShowDialog();
+
+        if (vm.Saved) RefreshData();
+    }
+
+    /// <summary>
+    /// 编辑分类（右键菜单触发）
+    /// </summary>
+    [RelayCommand]
+    private void EditCategory(Category? category)
+    {
+        if (category == null || string.IsNullOrEmpty(category.Id)) return;
+
+        var dataService = _serviceProvider.GetRequiredService<IDataService>();
+        var logService = _serviceProvider.GetRequiredService<ILogService>();
+        var editVm = new CategoryEditViewModel(dataService, logService, category);
+        var window = new CategoryEditWindow(editVm);
+        window.ShowDialog();
+
+        if (editVm.Saved) RefreshData();
+    }
+
+    /// <summary>
+    /// 删除分类，其下所有工具移入"全部"
+    /// </summary>
+    [RelayCommand]
+    private void DeleteCategory(Category? category)
+    {
+        if (category == null || string.IsNullOrEmpty(category.Id)) return;
+
+        if (MessageBox.Show(
+                $"确定删除分类 \"{category.Name}\" 吗？\n该分类下的所有工具将移入「全部」。",
+                "确认删除", MessageBoxButton.YesNo, MessageBoxImage.Warning) != MessageBoxResult.Yes)
+            return;
+
+        // 将属于该分类的工具设为"全部"
+        foreach (var tool in _dataService.Config.Tools.Where(t => t.CategoryId == category.Id))
+            tool.CategoryId = string.Empty;
+
+        // 从配置中移除分类
+        _dataService.Config.Categories.Remove(category);
+        _dataService.Save();
+
+        _logService.Info($"已删除分类: {category.Name}");
+        RefreshData();
+    }
+
     // ───────────────────────────── 数据刷新 ─────────────────────────────
 
     /// <summary>
diff --git a/PersonalToolBox/Views/CategoryEditWindow.xaml b/PersonalToolBox/Views/CategoryEditWindow.xaml
new file mode 100644
index 0000000..e144e65
--- /dev/null
+++ b/PersonalToolBox/Views/CategoryEditWindow.xaml
@@ -0,0 +1,54 @@
+<Window x:Class="PersonalToolBox.Views.CategoryEditWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="{Binding WindowTitle}" Height="170" Width="380"
+        WindowStartupLocation="CenterOwner"
+        ResizeMode="NoResize"
+        Background="{DynamicResource Theme.Background}">
+
+    <Grid Margin="20">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="Auto"/>
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="60"/>
+            <ColumnDefinition Width="*"/>
+        </Grid.ColumnDefinitions>
+
+        <TextBlock Grid.Row="0" Grid.Column="0"
+                   Text="名称:" Foreground="{DynamicResource Theme.Foreground}"
+                   VerticalAlignment="Center" Margin="0,0,0,12"/>
+        <TextBox Grid.Row="0" Grid.Column="1"
+                 Text="{Binding Name, UpdateSourceTrigger=PropertyChanged}"
+                 Background="{DynamicResource Theme.InputBackground}"
+                 Foreground="{DynamicResource Theme.Foreground}"
+                 BorderBrush="{DynamicResource Theme.InputBorder}"
+                 Height="30" Margin="0,0,0,16" Padding="6,0"/>
+
+        <Border Grid.Row="2" Grid.ColumnSpan="2"
+                BorderBrush="{DynamicResource Theme.CardBorder}"
+                BorderThickness="0,1,0,0" Margin="0,0,0,14"/>
+
+        <StackPanel Grid.Row="3" Grid.Column="1"
+                    Orientation="Horizontal" HorizontalAlignment="Right">
+            <Button Content="保存"
+                    Command="{Binding SaveCommand}"
+                    Background="{DynamicResource Theme.ButtonBackground}"
+                    Foreground="{DynamicResource Theme.ButtonForeground}"
+                    BorderThickness="0"
+                    Width="80" Height="30" FontSize="13"
+                    Cursor="Hand" Margin="0,0,10,0"/>
+            <Button Content="取消"
+                    Command="{Binding CancelCommand}"
+                    Background="{DynamicResource Theme.CardBackground}"
+                    Foreground="{DynamicResource Theme.Foreground}"
+                    BorderBrush="{DynamicResource Theme.CardBorder}"
+                    BorderThickness="1"
+                    Width="80" Height="30" FontSize="13"
+                    Cursor="Hand"/>
+        </StackPanel>
+    </Grid>
+</Window>
diff --git a/PersonalToolBox/Views/CategoryEditWindow.xaml.cs b/PersonalToolBox/Views/CategoryEditWindow.xaml.cs
new file mode 100644
index 0000000..9fc4cb6
--- /dev/null
+++ b/PersonalToolBox/Views/CategoryEditWindow.xaml.cs
@@ -0,0 +1,17 @@
+using System.Windows;
+using PersonalToolBox.ViewModels;
+
+namespace PersonalToolBox.Views;
+
+public partial class CategoryEditWindow : Window
+{
+    public CategoryEditWindow(CategoryEditViewModel viewModel)
+    {
+        InitializeComponent();
+
+        viewModel.CloseAction = (result) => { DialogResult = result; };
+
+        Owner = Application.Current.MainWindow;
+        DataContext = viewModel;
+    }
+}
diff --git a/PersonalToolBox/Views/MainWindow.xaml b/PersonalToolBox/Views/MainWindow.xaml
index 3dcd302..dec7267 100644
--- a/PersonalToolBox/Views/MainWindow.xaml
+++ b/PersonalToolBox/Views/MainWindow.xaml
@@ -78,8 +78,9 @@
             <Border Grid.Column="0" Background="{DynamicResource Theme.SidebarBackground}">
                 <Grid>
                     <Grid.RowDefinitions>
-                        <RowDefinition Height="60"/>
+                        <RowDefinition Height="50"/>
                         <RowDefinition Height="*"/>
+                        <RowDefinition Height="42"/>
                         <RowDefinition Height="45"/>
                     </Grid.RowDefinitions>
 
@@ -91,6 +92,7 @@
                                HorizontalAlignment="Center"/>
 
                     <ListBox Grid.Row="1"
+                             x:Name="CategoryListBox"
                              ItemsSource="{Binding Categories}"
                              SelectedItem="{Binding SelectedCategory}"
                              Background="Transparent"
@@ -100,6 +102,7 @@
                         <ListBox.ItemContainerStyle>
                             <Style TargetType="ListBoxItem">
                                 <Setter Property="Padding" Value="16,10"/>
+                                <Setter Property="Tag" Value="{Binding DataContext, RelativeSource={RelativeSource AncestorType=Window}}"/>
                                 <Setter Property="Template">
                                     <Setter.Value>
                                         <ControlTemplate TargetType="ListBoxItem">
@@ -107,7 +110,18 @@
                                                     Background="Transparent"
                                                     BorderBrush="Transparent"
                                                     BorderThickness="3,0,0,0"
-                                                    Padding="{TemplateBinding Padding}">
+                                                    Padding="{TemplateBinding Padding}"
+                                                    Tag="{TemplateBinding Tag}">
+                                                <Border.ContextMenu>
+                                                    <ContextMenu>
+                                                        <MenuItem Header="编辑"
+                                                                  Command="{Binding PlacementTarget.Tag.EditCategoryCommand, RelativeSource={RelativeSource AncestorType=ContextMenu}}"
+                                                                  CommandParameter="{Binding}"/>
+                                                        <MenuItem Header="删除"
+                                                                  Command="{Binding PlacementTarget.Tag.DeleteCategoryCommand, RelativeSource={RelativeSource AncestorType=ContextMenu}}"
+                                                                  CommandParameter="{Binding}"/>
+                                                    </ContextMenu>
+                                                </Border.ContextMenu>
                                                 <TextBlock Text="{Binding Name}"
                                                            Foreground="{DynamicResource Theme.Foreground}"
                                                            FontSize="14"/>
@@ -128,7 +142,24 @@
                         </ListBox.ItemContainerStyle>
                     </ListBox>
 
+                    <!-- 分类管理按钮 -->
                     <Button Grid.Row="2"
+                            Command="{Binding AddCategoryCommand}"
+                            Background="Transparent"
+                            BorderThickness="1"
+                            BorderBrush="{DynamicResource Theme.CardBorder}"
+                            Foreground="{DynamicResource Theme.Foreground}"
+                            FontSize="12"
+                            Height="35" Margin="10,0,10,3"
+                            Cursor="Hand">
+                        <StackPanel Orientation="Horizontal">
+                            <TextBlock Text="+" FontSize="16" Margin="0,0,8,0"
+                                       VerticalAlignment="Center"/>
+                            <TextBlock Text="添加分类" VerticalAlignment="Center"/>
+                        </StackPanel>
+                    </Button>
+
+                    <Button Grid.Row="3"
                             Command="{Binding ToggleThemeCommand}"
                             Background="Transparent"
                             BorderThickness="1"
diff --git a/PersonalToolBox/Views/ToolEditWindow.xaml b/PersonalToolBox/Views/ToolEditWindow.xaml
index 860f957..cebdf78 100644
--- a/PersonalToolBox/Views/ToolEditWindow.xaml
+++ b/PersonalToolBox/Views/ToolEditWindow.xaml
@@ -7,6 +7,93 @@
         ResizeMode="NoResize"
         Background="{DynamicResource Theme.Background}">
 
+    <Window.Resources>
+        <!-- ComboBox 下拉项统一样式 -->
+        <Style TargetType="ComboBoxItem">
+            <Setter Property="Background" Value="{DynamicResource Theme.InputBackground}"/>
+            <Setter Property="Foreground" Value="{DynamicResource Theme.Foreground}"/>
+            <Setter Property="Padding" Value="6,3"/>
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="ComboBoxItem">
+                        <Border x:Name="Border"
+                                Background="{TemplateBinding Background}"
+                                Padding="{TemplateBinding Padding}">
+                            <ContentPresenter/>
+                        </Border>
+                        <ControlTemplate.Triggers>
+                            <Trigger Property="IsHighlighted" Value="True">
+                                <Setter TargetName="Border" Property="Background" Value="{DynamicResource Theme.Accent}"/>
+                                <Setter Property="Foreground" Value="{DynamicResource Theme.ButtonForeground}"/>
+                            </Trigger>
+                        </ControlTemplate.Triggers>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+
+        <!-- ComboBox 整体样式（覆盖弹出层背景） -->
+        <Style TargetType="ComboBox">
+            <Setter Property="Background" Value="{DynamicResource Theme.InputBackground}"/>
+            <Setter Property="Foreground" Value="{DynamicResource Theme.Foreground}"/>
+            <Setter Property="BorderBrush" Value="{DynamicResource Theme.InputBorder}"/>
+            <Setter Property="BorderThickness" Value="1"/>
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="ComboBox">
+                        <Grid>
+                            <ToggleButton x:Name="ToggleButton"
+                                          Background="{TemplateBinding Background}"
+                                          BorderBrush="{TemplateBinding BorderBrush}"
+                                          BorderThickness="{TemplateBinding BorderThickness}"
+                                          Foreground="{TemplateBinding Foreground}"
+                                          IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"
+                                          Padding="{TemplateBinding Padding}">
+                                <ToggleButton.Template>
+                                    <ControlTemplate TargetType="ToggleButton">
+                                        <Border Background="{TemplateBinding Background}"
+                                                BorderBrush="{TemplateBinding BorderBrush}"
+                                                BorderThickness="{TemplateBinding BorderThickness}"
+                                                Padding="{TemplateBinding Padding}">
+                                            <Grid>
+                                                <TextBlock Text="{Binding Text, RelativeSource={RelativeSource AncestorType=ComboBox}}"
+                                                       Foreground="{TemplateBinding Foreground}"
+                                                       VerticalAlignment="Center"
+                                                       HorizontalAlignment="Left"
+                                                       Margin="6,0,0,0"/>
+                                                <Path x:Name="Arrow" Data="M0,0 L4,4 8,0" Stroke="{TemplateBinding Foreground}"
+                                                      StrokeThickness="1.5" HorizontalAlignment="Right" Width="8"
+                                                      VerticalAlignment="Center" Margin="0,0,6,0"/>
+                                            </Grid>
+                                        </Border>
+                                    </ControlTemplate>
+                                </ToggleButton.Template>
+                            </ToggleButton>
+                            <Popup x:Name="Popup"
+                                   IsOpen="{TemplateBinding IsDropDownOpen}"
+                                   Placement="Bottom"
+                                   AllowsTransparency="True"
+                                   Focusable="False"
+                                   PopupAnimation="Slide">
+                                <Grid MaxHeight="{TemplateBinding MaxDropDownHeight}"
+                                      MinWidth="{TemplateBinding ActualWidth}">
+                                    <Border Background="{DynamicResource Theme.InputBackground}"
+                                            BorderBrush="{DynamicResource Theme.InputBorder}"
+                                            BorderThickness="1"
+                                            SnapsToDevicePixels="True">
+                                        <ScrollViewer>
+                                            <ItemsPresenter/>
+                                        </ScrollViewer>
+                                    </Border>
+                                </Grid>
+                            </Popup>
+                        </Grid>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+    </Window.Resources>
+
     <Grid Margin="20">
         <Grid.RowDefinitions>
             <RowDefinition Height="Auto"/>
@@ -73,9 +160,6 @@
                   ItemsSource="{Binding Categories}"
                   SelectedItem="{Binding SelectedCategory}"
                   DisplayMemberPath="Name"
-                  Background="{DynamicResource Theme.InputBackground}"
-                  Foreground="{DynamicResource Theme.Foreground}"
-                  BorderBrush="{DynamicResource Theme.InputBorder}"
                   Height="30" Margin="0,0,0,12" Padding="4,0"/>
 
         <!-- 全局快捷键 -->