diff --git a/apps/wpm/services.py b/apps/wpm/services.py
index 57e63bbe..d24b7112 100644
--- a/apps/wpm/services.py
+++ b/apps/wpm/services.py
@@ -282,6 +282,7 @@ def handover_submit(handover: Handover, user: User, now: Union[datetime.datetime
         return
     now = timezone.now()
     need_add = True
+    wm_from_need_delete = False
     material = handover.material
     batch = handover.batch
     try:
@@ -295,7 +296,7 @@ def handover_submit(handover: Handover, user: User, now: Union[datetime.datetime
     if count_x < 0:
         raise ParseError('车间库存不足!')
     elif count_x == 0:
-        wm_from.delete()
+        wm_from_need_delete = True
     else:
         wm_from.count = count_x
         wm_from.save()
@@ -309,3 +310,5 @@ def handover_submit(handover: Handover, user: User, now: Union[datetime.datetime
     handover.submit_user = user
     handover.submit_time = now
     handover.save()
+    if wm_from_need_delete:
+        wm_from.delete()