diff --git a/APT.MicroApi/APT.SC.WebApi/Controllers/Api/SEController/6SETrainRecordController.cs b/APT.MicroApi/APT.SC.WebApi/Controllers/Api/SEController/6SETrainRecordController.cs
index bb56e81..e87676d 100644
--- a/APT.MicroApi/APT.SC.WebApi/Controllers/Api/SEController/6SETrainRecordController.cs
+++ b/APT.MicroApi/APT.SC.WebApi/Controllers/Api/SEController/6SETrainRecordController.cs
@@ -48,7 +48,8 @@ namespace APT.SC.WebApi.Controllers.Api.SE
                 {
                     if (item.IS_DELETED)
                         item.Nav_Files.ForEach(e => e.IS_DELETED = true);
-                    listFiles.AddRange(item.Nav_Files);
+                    if (item.Nav_Files != null)
+                        listFiles.AddRange(item.Nav_Files);
                 }
                 var files = entity.Nav_Files;
                 List<T_FM_NOTIFICATION_TASK> sendNotice = null;