diff --git a/Service/AlarmService.cs b/Service/AlarmService.cs
index b624c21..7a5fab7 100644
--- a/Service/AlarmService.cs
+++ b/Service/AlarmService.cs
@@ -64,6 +64,7 @@ namespace LY.App.Service
                         }
                     }
                 }
+                entity = entity.Distinct().ToList();
                 if (entity.Any())
                 {
                     foreach (var item in entity)