diff --git a/MonitoringTechnology/DataAccess/DBHelper.cs b/MonitoringTechnology/DataAccess/DBHelper.cs
index 8f90b01..9c755f0 100644
--- a/MonitoringTechnology/DataAccess/DBHelper.cs
+++ b/MonitoringTechnology/DataAccess/DBHelper.cs
@@ -281,7 +281,7 @@ namespace MonitoringTechnology.DataAccess
                             F_CreateDate = dr.Field<DateTime>("F_CreateDate"),
                             F_Time = dr.Field<DateTime>("F_Time"),
                             F_Message = dr.Field<string>("F_Message"),
-                            F_Len = dr.Field<int>("F_Len")
+                            F_Len = dr.Field<float>("F_Len")
                         });
                         s++;
                     }
diff --git a/MonitoringTechnology/Models/AlarmItemModel.cs b/MonitoringTechnology/Models/AlarmItemModel.cs
index db1569d..c310aac 100644
--- a/MonitoringTechnology/Models/AlarmItemModel.cs
+++ b/MonitoringTechnology/Models/AlarmItemModel.cs
@@ -56,8 +56,8 @@ namespace MonitoringTechnology.Models
         /// <summary>
         /// 告警时长
         /// </summary>
-        public int len { get; set; }
-        public int F_Len
+        public float len { get; set; }
+        public float F_Len
         {
             get { return len; }
             set { len = value;this.DoNotify(); }