diff --git a/src/Khd.Core.Domain/Models/DmsBaseAlarmRule.cs b/src/Khd.Core.Domain/Models/DmsBaseAlarmRule.cs
index 7a673af..b5f0480 100644
--- a/src/Khd.Core.Domain/Models/DmsBaseAlarmRule.cs
+++ b/src/Khd.Core.Domain/Models/DmsBaseAlarmRule.cs
@@ -1,10 +1,12 @@
-using System.ComponentModel.DataAnnotations.Schema;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 
 namespace Khd.Core.Domain.Models
 {
     [Table("dms_base_alarm_rule")]
     public class DmsBaseAlarmRule
     {
+        [Key]
         [Column("alarm_rule_id")]
         public long AlarmRuleId { get; set; }