diff --git a/APT.MS.Services/Services/BS/BSOperateLogService.cs b/APT.MS.Services/Services/BS/BSOperateLogService.cs
index ed00d73..b667b24 100644
--- a/APT.MS.Services/Services/BS/BSOperateLogService.cs
+++ b/APT.MS.Services/Services/BS/BSOperateLogService.cs
@@ -184,7 +184,10 @@ namespace APT.BaseData.Services.Services.BS
             if (DATA_ID_SUB.HasValue)
                 expression = expression.And(e => e.DATA_ID_SUB.HasValue && e.DATA_ID_SUB == DATA_ID_SUB);
             var model = GetEntity(expression);
-            model.OPERTETIME = DateTime.Now;
+            if (model != null)
+            {
+                model.OPERTETIME = DateTime.Now;
+            }
             return model;
         }