diff --git a/apps/mtm/serializers.py b/apps/mtm/serializers.py
index 5745cd10..8827eabb 100644
--- a/apps/mtm/serializers.py
+++ b/apps/mtm/serializers.py
@@ -227,6 +227,7 @@ class RouteSerializer(CustomModelSerializer):
         process = validated_data['process']
         routepack = validated_data.get('routepack', None)
         material_out_tracking = validated_data.pop("material_out_tracking", Material.MA_TRACKING_BATCH)
+        need_save = False
         if routepack:
             pass
             # if Route.objects.filter(routepack=routepack, process=process).exists():
@@ -252,13 +253,15 @@ class RouteSerializer(CustomModelSerializer):
             else:
                 if instance.material:
                     instance.material_out = self.gen_material_out(instance, material_out_tracking)
+                    need_save = True
             rx = Route.objects.filter(material_in=instance.material_in, material_out=instance.material_out, process=process).first()
             if rx:
                 msg = ""
                 if rx.routepack:
                     msg = rx.routepack.name
                 raise ParseError(f"该工艺步骤已存在-{msg}")
-            instance.save()
+            if need_save:
+                instance.save()
             return instance
 
     def update(self, instance, validated_data):
@@ -268,6 +271,7 @@ class RouteSerializer(CustomModelSerializer):
         with transaction.atomic():
             instance = super().update(instance, validated_data)
             material_out = instance.material_out
+            need_save = False
             if material_out:
                 if material_out.process is None:
                     material_out.process = process
@@ -281,13 +285,15 @@ class RouteSerializer(CustomModelSerializer):
             else:
                 if instance.material:
                     instance.material_out = self.gen_material_out(instance,  material_out_tracking)
+                    need_save = True
             rx = Route.objects.filter(material_in=instance.material_in, material_out=instance.material_out, process=process).exclude(id=instance.id).first()
             if rx:
                 msg = ""
                 if rx.routepack:
                     msg = rx.routepack.name
                 raise ParseError(f"该工艺步骤已存在-{msg}")
-            instance.save()
+            if need_save:
+                instance.save()
             return instance
 
     def to_representation(self, instance):