diff --git a/src/Application/Masa.Alert.Application/AlarmRules/EventHandler/SendAlarmNotificationEventHandler.cs b/src/Application/Masa.Alert.Application/AlarmRules/EventHandler/SendAlarmNotificationEventHandler.cs
index 1f9d585..fd33dd1 100644
--- a/src/Application/Masa.Alert.Application/AlarmRules/EventHandler/SendAlarmNotificationEventHandler.cs
+++ b/src/Application/Masa.Alert.Application/AlarmRules/EventHandler/SendAlarmNotificationEventHandler.cs
@@ -74,6 +74,9 @@ private async Task AddLogVariablesAsync(AlarmRule alarmRule, Dictionary<string,
         if (startTime == null)
             return;
 
+        variables.TryAdd(AlertConsts.CHECK_START_TIME_NOTIFICATION_TEMPLATE_VAR_NAME, startTime.Value.UtcDateTime);
+        variables.TryAdd(AlertConsts.CHECK_END_TIME_NOTIFICATION_TEMPLATE_VAR_NAME, checkTime.UtcDateTime);
+
         var request = new LogLatestRequest
         {
             Query = alarmRule.WhereExpression,
diff --git a/src/Domain/Masa.Alert.Domain.Shared/Consts/AlertConsts.cs b/src/Domain/Masa.Alert.Domain.Shared/Consts/AlertConsts.cs
index e6ee7c9..75062e7 100644
--- a/src/Domain/Masa.Alert.Domain.Shared/Consts/AlertConsts.cs
+++ b/src/Domain/Masa.Alert.Domain.Shared/Consts/AlertConsts.cs
@@ -8,4 +8,6 @@ public static class AlertConsts
     public const string DB_TABLE_PREFIX = null;
     public const string DB_SCHEMA = "alert";
     public const string ALARM_RULE_NAME_NOTIFICATION_TEMPLATE_VAR_NAME = "Name";
+    public const string CHECK_START_TIME_NOTIFICATION_TEMPLATE_VAR_NAME = "CheckStartTime";
+    public const string CHECK_END_TIME_NOTIFICATION_TEMPLATE_VAR_NAME = "CheckEndTime";
 }