diff --git a/apps/mtm/serializers.py b/apps/mtm/serializers.py
index 0eabfd65..0b0c36e4 100644
--- a/apps/mtm/serializers.py
+++ b/apps/mtm/serializers.py
@@ -200,9 +200,7 @@ class RouteSerializer(CustomModelSerializer):
                 material_out.cate = material.cate
                 material_out.tracking = material_out_tracking
             material_out.save()
-            instance.material_out = material_out
-            instance.save()
-            return
+            return material_out
         material_out = Material.objects.get_queryset(all=True).filter(name=material.name, model=material.model, process=process, specification=material.specification).first()
         if material_out:
             material_out.is_deleted = False
@@ -211,9 +209,7 @@ class RouteSerializer(CustomModelSerializer):
                 material_out.cate = material.cate
                 material_out.tracking = material_out_tracking
             material_out.save()
-            instance.material_out = material_out
-            instance.save()
-            return
+            return material_out
         material_out = Material.objects.create(**{'parent': instance.material, 'process': instance.process,
                                                                                           'is_hidden': True, 'name': material.name,
                                                                                           'number': material.number,
@@ -225,10 +221,8 @@ class RouteSerializer(CustomModelSerializer):
                                                                                           'create_by': self.request.user,
                                                                                           'update_by': self.request.user,
                                                                                           })
-        instance.material_out = material_out
-        instance.save()
-        return
-
+        return material_out
+    
     def create(self, validated_data):
         process = validated_data['process']
         routepack = validated_data.get('routepack', None)
@@ -257,7 +251,13 @@ class RouteSerializer(CustomModelSerializer):
                 #     raise ParseError('物料工序错误!请重新选择')
             else:
                 if instance.material:
-                    self.gen_material_out(instance, material_out_tracking)
+                    instance.material_out = self.gen_material_out(instance, material_out_tracking)
+            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}")
             return instance
 
     def update(self, instance, validated_data):
@@ -277,7 +277,13 @@ class RouteSerializer(CustomModelSerializer):
                 #     raise ParseError('物料工序错误!请重新选择')
             else:
                 if instance.material:
-                    self.gen_material_out(instance,  material_out_tracking)
+                    instance.material_out = self.gen_material_out(instance,  material_out_tracking)
+            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}")
             return instance
 
     def to_representation(self, instance):