diff --git a/hb_server/apps/wpm/serializers.py b/hb_server/apps/wpm/serializers.py
index 488ceaa..980acfd 100644
--- a/hb_server/apps/wpm/serializers.py
+++ b/hb_server/apps/wpm/serializers.py
@@ -56,7 +56,8 @@ class PickSerializer(serializers.Serializer):
                     i['count'] = len(i['iproducts'])
                     isLowLevel = True
                 if i['count']>0:
-                    i.pop('iproducts', None)
+                    if 'iproducts' in i:
+                        iproducts = i.pop('iproducts')
                     i['fifo'] = fifo
                     i['is_testok'] = True # 默认检测合格
                     i['subproduction_plan'] = sp
@@ -64,7 +65,7 @@ class PickSerializer(serializers.Serializer):
                     # 创建再下一个层级
                     if isLowLevel:
                         mls = []
-                        for m in i['iproducts']:
+                        for m in iproducts:
                             ml = {}
                             ml['material'] = m.material
                             ml['number'] = m.number