diff --git a/apps/enm/serializers.py b/apps/enm/serializers.py
index 049a806d..867a0fb8 100644
--- a/apps/enm/serializers.py
+++ b/apps/enm/serializers.py
@@ -237,8 +237,10 @@ class XscriptSerializer(CustomModelSerializer):
         sch = ins.myschedule
         if sch.crontab:
             pobj.crontab = sch.crontab
+            pobj.interval = None
         elif sch.interval:
             pobj.interval = sch.interval
+            pobj.crontab = None
         else:
             raise ParseError('不支持的定时策略')
         pobj.save()