diff --git a/Model/AlarmReq.cs b/Model/AlarmReq.cs
index 5824bbb..ab3c06a 100644
--- a/Model/AlarmReq.cs
+++ b/Model/AlarmReq.cs
@@ -37,6 +37,7 @@
         /// 每页条数
         /// </summary>
         public int pageSize { get; set; } = 10;
+        public long? positionId { get; set; } 
 
     }
 }
diff --git a/Service/AlarmService.cs b/Service/AlarmService.cs
index 61610b7..1b90e74 100644
--- a/Service/AlarmService.cs
+++ b/Service/AlarmService.cs
@@ -368,6 +368,7 @@ namespace LY.App.Service
         {
             RefAsync<int> total = 0;
             var items = await _db.Queryable<Alarm>().SplitTable()
+                .WhereIF(input.positionId.HasValue, st => st.positionId == input.positionId.Value)
                 .WhereIF(input.Frequency.HasValue, st => st.freq == input.Frequency.Value)
                 .WhereIF(!string.IsNullOrEmpty(input.sn), s => s.serial_number.Contains(input.sn))
                 .WhereIF(!string.IsNullOrEmpty(input.model), st => st.device_type == input.model)