diff --git a/apps/inm/serializers.py b/apps/inm/serializers.py
index 533d4602..4cb382b0 100644
--- a/apps/inm/serializers.py
+++ b/apps/inm/serializers.py
@@ -246,7 +246,8 @@ class MIODoSerializer(CustomModelSerializer):
         return attrs
     
     def create(self, validated_data):
-        validated_data["number"] = MIO.get_a_number(validated_data["type"])
+        if not validated_data.get("number", None):
+            validated_data["number"] = MIO.get_a_number(validated_data["type"])
         if validated_data['type'] not in [MIO.MIO_TYPE_DO_OUT, MIO.MIO_TYPE_DO_IN]:
             raise ValidationError('出入库类型错误')
         return super().create(validated_data)
@@ -297,7 +298,8 @@ class MIOPurSerializer(CustomModelSerializer):
 
     def create(self, validated_data):
         validated_data['type'] = MIO.MIO_TYPE_PUR_IN
-        validated_data['number'] = MIO.get_a_number(validated_data["type"])
+        if not validated_data.get("number", None):
+            validated_data["number"] = MIO.get_a_number(validated_data["type"])
         pu_order: PuOrder = validated_data.get('pu_order', None)
         if pu_order:
             if pu_order.state in [PuOrder.PUORDER_CREATE, PuOrder.PUORDER_DONE]:
@@ -324,7 +326,8 @@ class MIOOtherSerializer(CustomModelSerializer):
         read_only_fields = ["number"]
 
     def create(self, validated_data):
-        validated_data['number'] = MIO.get_a_number(validated_data["type"])
+        if not validated_data.get("number", None):
+            validated_data["number"] = MIO.get_a_number(validated_data["type"])
         if validated_data['type'] not in [MIO.MIO_TYPE_OTHER_OUT, MIO.MIO_TYPE_OTHER_IN]:
             raise ValidationError('出入库类型错误')
         return super().create(validated_data)
diff --git a/apps/pm/serializers.py b/apps/pm/serializers.py
index 0eb28dfa..ce728f5e 100644
--- a/apps/pm/serializers.py
+++ b/apps/pm/serializers.py
@@ -27,7 +27,8 @@ class UtaskSerializer(CustomModelSerializer):
         read_only_fields = ["number"]
 
     def create(self, validated_data):
-        validated_data["number"] = Utask.get_a_number()
+        if not validated_data.get('number', None):
+            validated_data["number"] = Utask.get_a_number()
         return super().create(validated_data)
     
     def validate(self, attrs):