diff --git a/apps/wpm/serializers.py b/apps/wpm/serializers.py
index 17144e96..6cd931a4 100644
--- a/apps/wpm/serializers.py
+++ b/apps/wpm/serializers.py
@@ -580,7 +580,6 @@ class HandoverSerializer(CustomModelSerializer):
         wm:WMaterial = attrs.get('wm', None)
         handoverb = attrs.get('handoverb', [])
         if wm:
-            material = wm.material
             attrs['handoverb'] = [{"wm": wm, "count": attrs["count"] }]
             handoverb = attrs['handoverb']
         elif handoverb:
@@ -615,6 +614,11 @@ class HandoverSerializer(CustomModelSerializer):
             attrs['recive_mgroup'] = attrs['send_mgroup']
             attrs['recive_dept'] = attrs['send_dept']
             attrs['recive_user'] = attrs['send_user']
+        if attrs['type'] == Handover.H_REPAIR:
+            recive_mgroup = attrs.get("recive_mgroup", None)
+            if recive_mgroup is None:
+                raise ParseError('返工交接需指定工段')
+            attrs['material_changed'] = find_material_can_change(attrs['material'], recive_mgroup)
         return attrs
 
     class Meta:
@@ -634,18 +638,25 @@ class HandoverSerializer(CustomModelSerializer):
         }
     
     def create(self, validated_data):
-        type = validated_data['type']
         handoverb = validated_data.pop('handoverb', [])
-        if type == Handover.H_REPAIR:
-            recive_mgroup = validated_data.get("recive_mgroup", None)
-            if recive_mgroup is None:
-                raise ParseError('返工交接需指定工段')
-            validated_data['material_changed'] = find_material_can_change(validated_data['material'], recive_mgroup)
         with transaction.atomic():
             ins = super().create(validated_data)
             for item in handoverb:
                 Handoverb.objects.get_or_create(handover=ins, wm=item["wm"], count=item["count"])
         return ins
+    
+    def update(self, instance, validated_data):
+        handoverb = validated_data.pop('handoverb', [])
+        with transaction.atomic():
+            super().update(instance, validated_data)
+            wmIds = []
+            for item in handoverb:
+                wmIds.append(item["wm"].id)
+                hb, _ = Handoverb.objects.get_or_create(handover=instance, wm=item["wm"])
+                hb.count = item["count"]
+                hb.save()
+            Handoverb.objects.filter(handover=instance).exclude(wm__in=wmIds).delete()
+        return instance
 
 class HandoverUpdateSerializer(CustomModelSerializer):
     class Meta: