diff --git a/Data/Entities/DbVariableData.cs b/Data/Entities/DbVariableData.cs
index 3815bfd..33adeca 100644
--- a/Data/Entities/DbVariableData.cs
+++ b/Data/Entities/DbVariableData.cs
@@ -79,6 +79,12 @@ public class DbVariableData
     /// </summary>
     public bool IsAlarm { get; set; }
 
+    /// <summary>
+    /// 轮询级别，例如1秒、5秒等。
+    /// </summary>
+    [SugarColumn(ColumnDataType = "varchar(20)", SqlParameterDbType = typeof(EnumToStringConvert))]
+    public PollLevelType PollLevelType { get; set; }
+
     /// <summary>
     /// 指示变量是否已被逻辑删除。
     /// </summary>
diff --git a/Models/VariableData.cs b/Models/VariableData.cs
index 81d6ed8..4799eea 100644
--- a/Models/VariableData.cs
+++ b/Models/VariableData.cs
@@ -78,6 +78,11 @@ public partial class VariableData : ObservableObject
     /// </summary>
     public bool IsAlarm { get; set; }
 
+    /// <summary>
+    /// 轮询级别，例如1秒、5秒等。
+    /// </summary>
+    public PollLevelType PollLevelType { get; set; } = PollLevelType.ThirtySeconds;
+
     /// <summary>
     /// 指示变量是否已被逻辑删除。
     /// </summary>
diff --git a/Views/Dialogs/VarDataDialog.xaml b/Views/Dialogs/VarDataDialog.xaml
index a948a6b..6bb6eae 100644
--- a/Views/Dialogs/VarDataDialog.xaml
+++ b/Views/Dialogs/VarDataDialog.xaml
@@ -74,6 +74,18 @@
                         </DataTemplate>
                     </ComboBox.ItemTemplate>
                 </ComboBox>
+
+                <TextBlock Text="轮询级别"
+                           Style="{StaticResource TextBlockSubTitle}" />
+                <ComboBox SelectedValue="{Binding VariableData.PollLevelType, UpdateSourceTrigger=PropertyChanged}"
+                          SelectedValuePath="Tag"
+                          ItemsSource="{ex:EnumBindingSource {x:Type en:PollLevelType}}">
+                    <ComboBox.ItemTemplate>
+                        <DataTemplate>
+                            <TextBlock Text="{Binding Converter={StaticResource EnumDescriptionConverter}}" />
+                        </DataTemplate>
+                    </ComboBox.ItemTemplate>
+                </ComboBox>
             </ikw:SimpleStackPanel>
         </GroupBox>