diff --git a/DMS.Application/Interfaces/IVariableAppService.cs b/DMS.Application/Interfaces/IVariableAppService.cs
index efd3bf8..df1952c 100644
--- a/DMS.Application/Interfaces/IVariableAppService.cs
+++ b/DMS.Application/Interfaces/IVariableAppService.cs
@@ -27,6 +27,11 @@ public interface IVariableAppService
     /// </summary>
     Task<int> UpdateVariableAsync(VariableDto variableDto);
 
+    /// <summary>
+    /// 异步更新一个已存在的变量。
+    /// </summary>
+    Task<int> UpdateVariablesAsync(List<VariableDto> variableDtos);
+
     /// <summary>
     /// 异步删除一个变量。
     /// </summary>
diff --git a/DMS.Application/Services/VariableAppService.cs b/DMS.Application/Services/VariableAppService.cs
index c0c5a6c..20b93c2 100644
--- a/DMS.Application/Services/VariableAppService.cs
+++ b/DMS.Application/Services/VariableAppService.cs
@@ -100,6 +100,41 @@ public class VariableAppService : IVariableAppService
         }
     }
 
+    /// <summary>
+    /// 异步批量更新变量（事务性操作）。
+    /// </summary>
+    /// <param name="variableDtos">要更新的变量数据传输对象列表。</param>
+    /// <returns>受影响的行数。</returns>
+    /// <exception cref="ApplicationException">如果更新变量时发生错误。</exception>
+    public async Task<int> UpdateVariablesAsync(List<VariableDto> variableDtos)
+    {
+        try
+        {
+            await _repoManager.BeginTranAsync();
+            int totalAffected = 0;
+            
+            foreach (var variableDto in variableDtos)
+            {
+                var variable = await _repoManager.Variables.GetByIdAsync(variableDto.Id);
+                if (variable == null)
+                {
+                    throw new ApplicationException($"Variable with ID {variableDto.Id} not found.");
+                }
+                _mapper.Map(variableDto, variable);
+                int res = await _repoManager.Variables.UpdateAsync(variable);
+                totalAffected += res;
+            }
+            
+            await _repoManager.CommitAsync();
+            return totalAffected;
+        }
+        catch (Exception ex)
+        {
+            await _repoManager.RollbackAsync();
+            throw new ApplicationException($"批量更新变量时发生错误，操作已回滚,错误信息:{ex.Message}", ex);
+        }
+    }
+
     /// <summary>
     /// 异步删除一个变量（事务性操作）。
     /// </summary>
diff --git a/DMS.WPF/Services/DialogService.cs b/DMS.WPF/Services/DialogService.cs
index d1f31f1..0413fd9 100644
--- a/DMS.WPF/Services/DialogService.cs
+++ b/DMS.WPF/Services/DialogService.cs
@@ -20,6 +20,7 @@ namespace DMS.WPF.Services
             { typeof(ImportExcelDialogViewModel), typeof(ImportExcelDialog) },
             { typeof(ImportOpcUaDialogViewModel), typeof(ImportOpcUaDialog) },
             { typeof(VariableDialogViewModel), typeof(VariableDialog) },
+            { typeof(PollLevelDialogViewModel), typeof(PollLevelDialog) },
             // { typeof(MqttDialogViewModel), typeof(MqttDialog) }, // Add other mappings here
             // ... other dialogs
         };
diff --git a/DMS.WPF/ViewModels/Dialogs/PollLevelDialogViewModel.cs b/DMS.WPF/ViewModels/Dialogs/PollLevelDialogViewModel.cs
index 327793c..1d47aa7 100644
--- a/DMS.WPF/ViewModels/Dialogs/PollLevelDialogViewModel.cs
+++ b/DMS.WPF/ViewModels/Dialogs/PollLevelDialogViewModel.cs
@@ -2,11 +2,12 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
 using DMS.Core.Enums;
 
 namespace DMS.WPF.ViewModels.Dialogs
 {
-    public partial class PollLevelDialogViewModel : ObservableObject
+    public partial class PollLevelDialogViewModel : DialogViewModelBase<PollLevelType?>
     {
         [ObservableProperty]
         private PollLevelType _selectedPollLevelType;
@@ -17,6 +18,20 @@ namespace DMS.WPF.ViewModels.Dialogs
         {
             PollLevelTypes = Enum.GetValues(typeof(PollLevelType)).Cast<PollLevelType>().ToList();
             SelectedPollLevelType = currentPollLevelType;
+            Title = "修改轮询频率";
+            PrimaryButText = "确定";
+        }
+
+        [RelayCommand]
+        private void PrimaryButton()
+        {
+            Close(SelectedPollLevelType);
+        }
+
+        [RelayCommand]
+        private void CancleButton()
+        {
+            Close(null);
         }
     }
 }
diff --git a/DMS.WPF/ViewModels/VariableTableViewModel.cs b/DMS.WPF/ViewModels/VariableTableViewModel.cs
index 5bb5719..cddd786 100644
--- a/DMS.WPF/ViewModels/VariableTableViewModel.cs
+++ b/DMS.WPF/ViewModels/VariableTableViewModel.cs
@@ -277,7 +277,7 @@ partial class VariableTableViewModel : ViewModelBase, INavigatable
     {
         try
         {
-            if (CurrentVariableTable.Device==null)
+            if (CurrentVariableTable.Device == null)
             {
                 NotificationHelper.ShowError("当前变量表的Device对象为空，请检查。");
                 return;
@@ -454,37 +454,44 @@ partial class VariableTableViewModel : ViewModelBase, INavigatable
     /// </summary>
     /// <param name="variablesToChange">要修改轮询频率的变量数据列表。</param>
     [RelayCommand]
-    public async Task ChangePollLevel(IList<object> variablesToChange)
+    public async Task ChangePollLevel()
     {
-        // var validVariables = variablesToChange?.OfType<Variable>()
-        //                                       .ToList();
-        //
-        // // 检查是否有变量被选中
-        // if (validVariables == null || !validVariables.Any())
-        // {
-        //     NotificationHelper.ShowInfo("请选择要修改轮询频率的变量");
-        //     return;
-        // }
-        //
-        // // 显示轮询频率选择对话框，并传入第一个变量的当前轮询频率作为默认值
-        // var newPollLevelType = await _dialogService.ShowPollLevelDialog(validVariables.First()
-        //                                                                     .PollLevelType);
-        // if (newPollLevelType.HasValue)
-        // {
-        //     // 更新所有选定变量的轮询频率和修改状态
-        //     foreach (var variable in validVariables)
-        //     {
-        //         variable.PollLevelType = newPollLevelType.Value;
-        //         variable.IsModified = false; // 标记为未修改，因为已保存到数据库
-        //     }
-        //
-        //     // 批量更新数据库中的变量数据
-        //     await _varDataRepository.UpdateAsync(validVariables);
-        //
-        //     await RefreshDataView();
-        //     // 显示成功通知
-        //     NotificationHelper.ShowSuccess($"已成功更新 {validVariables.Count} 个变量的轮询频率");
-        // }
+        // 检查是否有变量被选中
+        if (SelectedVariables.Count == 0)
+        {
+            NotificationHelper.ShowInfo("请选择要修改轮询频率的变量");
+            return;
+        }
+
+        // 获取选中的变量列表
+        var validVariables = SelectedVariables.Cast<VariableItemViewModel>().ToList();
+
+        // 显示轮询频率选择对话框，并传入第一个变量的当前轮询频率作为默认值
+        PollLevelDialogViewModel viewModel = new PollLevelDialogViewModel(validVariables.First().PollLevel);
+        var newPollLevelType = await _dialogService.ShowDialogAsync(viewModel);
+        if (newPollLevelType.HasValue)
+        {
+            // 更新所有选定变量的轮询频率和修改状态
+            foreach (var variable in validVariables)
+            {
+                variable.PollLevel = newPollLevelType.Value;
+                variable.UpdatedAt = DateTime.Now;
+            }
+
+            // 批量更新数据库中的变量数据
+            var variableDtos = _mapper.Map<List<VariableDto>>(validVariables);
+            var result = await _variableAppService.UpdateVariablesAsync(variableDtos);
+            
+            if (result > 0)
+            {
+                // 显示成功通知
+                NotificationHelper.ShowSuccess($"已成功更新 {validVariables.Count} 个变量的轮询频率");
+            }
+            else
+            {
+                NotificationHelper.ShowError("更新轮询频率失败");
+            }
+        }
     }
 
     /// <summary>
diff --git a/DMS.WPF/Views/Dialogs/PollLevelDialog.xaml b/DMS.WPF/Views/Dialogs/PollLevelDialog.xaml
index e6b9dbf..30d28b1 100644
--- a/DMS.WPF/Views/Dialogs/PollLevelDialog.xaml
+++ b/DMS.WPF/Views/Dialogs/PollLevelDialog.xaml
@@ -1,28 +1,30 @@
-<ui:ContentDialog x:Class="DMS.WPF.Views.Dialogs.PollLevelDialog"
-             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-             xmlns:enums="clr-namespace:DMS.Core.Enums"
-             xmlns:extensions="clr-namespace:DMS.Extensions"
-             xmlns:ui="http://schemas.inkore.net/lib/ui/wpf/modern"
-             xmlns:valueConverts="clr-namespace:DMS.WPF.ValueConverts"
-             mc:Ignorable="d"
-             Title="修改轮询频率"
-             PrimaryButtonText="确定"
-             CloseButtonText="取消"
-             d:DesignHeight="150" d:DesignWidth="300">
+<ui:ContentDialog
+    x:Class="DMS.WPF.Views.Dialogs.PollLevelDialog"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:ui="http://schemas.inkore.net/lib/ui/wpf/modern"
+    xmlns:valueConverts="clr-namespace:DMS.WPF.ValueConverts"
+    xmlns:vmd="clr-namespace:DMS.WPF.ViewModels.Dialogs"
+    Title="{Binding Title}"
+    d:DataContext="{d:DesignInstance vmd:PollLevelDialogViewModel}"
+    CloseButtonCommand="{Binding CancleButtonCommand}"
+    CloseButtonText="取消"
+    PrimaryButtonCommand="{Binding PrimaryButtonCommand}"
+    PrimaryButtonText="{Binding PrimaryButText}"
+    mc:Ignorable="d">
     <ui:ContentDialog.Resources>
         <valueConverts:EnumDescriptionConverter x:Key="EnumDescriptionConverter" />
     </ui:ContentDialog.Resources>
     <Grid>
-        <ComboBox 
-                  ItemsSource="{Binding PollLevelTypes}"
-                  SelectedItem="{Binding SelectedPollLevelType}"
-                  Margin="20">
+        <ComboBox
+            Margin="20"
+            ItemsSource="{Binding PollLevelTypes}"
+            SelectedItem="{Binding SelectedPollLevelType}">
             <ComboBox.ItemTemplate>
                 <DataTemplate>
-                    <TextBlock Text="{Binding Converter={StaticResource EnumDescriptionConverter}}"/>
+                    <TextBlock Text="{Binding Converter={StaticResource EnumDescriptionConverter}}" />
                 </DataTemplate>
             </ComboBox.ItemTemplate>
         </ComboBox>
diff --git a/DMS.WPF/Views/Dialogs/PollLevelDialog.xaml.cs b/DMS.WPF/Views/Dialogs/PollLevelDialog.xaml.cs
index 4979a0a..f9856f5 100644
--- a/DMS.WPF/Views/Dialogs/PollLevelDialog.xaml.cs
+++ b/DMS.WPF/Views/Dialogs/PollLevelDialog.xaml.cs
@@ -5,10 +5,9 @@ namespace DMS.WPF.Views.Dialogs
 {
     public partial class PollLevelDialog : ContentDialog
     {
-        public PollLevelDialog(PollLevelDialogViewModel viewModel)
+        public PollLevelDialog()
         {
             InitializeComponent();
-            DataContext = viewModel;
         }
     }
 }
diff --git a/DMS.WPF/Views/VariableTableView.xaml b/DMS.WPF/Views/VariableTableView.xaml
index b17a7ee..6132f99 100644
--- a/DMS.WPF/Views/VariableTableView.xaml
+++ b/DMS.WPF/Views/VariableTableView.xaml
@@ -148,7 +148,7 @@
 
             <DataGrid.ContextMenu>
                 <ContextMenu>
-                    <MenuItem Command="{Binding AddVarDataCommand}" Header="添加变量">
+                    <MenuItem Command="{Binding AddVariableCommand}" Header="添加变量">
                         <MenuItem.Icon>
                             <ui:FontIcon Icon="{x:Static ui:SegoeFluentIcons.Add}" />
                         </MenuItem.Icon>