diff --git a/apps/wpm/serializers.py b/apps/wpm/serializers.py
index dc209f6b..ddb134cb 100644
--- a/apps/wpm/serializers.py
+++ b/apps/wpm/serializers.py
@@ -628,21 +628,20 @@ class MlogInitSerializer(CustomModelSerializer):
         }
     
     def validate(self, attrs):
-        route: Route = attrs.get('route', None)
         mgroup: Mgroup = attrs['mgroup']
         is_fix:bool = attrs.get('is_fix', False)
         attrs['mtype'] = mgroup.mtype
         if is_fix:
             attrs["route"] = None
-        elif route is None:
-            raise ParseError('缺少工艺路线')
-        if route and route.process != mgroup.process:
-            raise ParseError('工序不匹配')
-        if is_fix:
             attrs['hour_work'] = None
             attrs['material_in'] = None
             attrs['material_out'] = None
-        if route:
+        else:
+            route: Route = attrs.get('route', None)
+            if not route:
+                raise ParseError('缺少工艺路线')
+            if route and route.process != mgroup.process:
+                raise ParseError('工序不匹配')
             attrs['hour_work'] = route.hour_work
             attrs['material_in'] = route.material_in
             attrs['material_out'] = route.material_out