diff --git a/apps/inm/services.py b/apps/inm/services.py
index a3832ec2..e66493c5 100644
--- a/apps/inm/services.py
+++ b/apps/inm/services.py
@@ -185,6 +185,8 @@ def do_in(item: MIOItem):
                         "production_dept": production_dept
                         }
                 )
+            if mb.production_dept is None:
+                mb.production_dept = production_dept
             mb.count = mb.count + xcount
             mb.save()
 
@@ -204,10 +206,12 @@ def do_in(item: MIOItem):
                     batch=item.batch,
                     defaults={"count": 0, "production_dept": production_dept}
         )
-        mb.count = mb.count + item.count
-        mb.save()
         if not is_created:
             raise ParseError("该批次组合件已存在")
+        if mb.production_dept is None:
+            mb.production_dept = production_dept
+        mb.count = mb.count + item.count
+        mb.save()
         for mia in mias:
             MaterialBatchA.objects.create(mb=mb, material=mia.material, batch=mia.batch, rate=mia.rate)