diff --git a/apps/wpm/services.py b/apps/wpm/services.py
index 35405228..15f01671 100644
--- a/apps/wpm/services.py
+++ b/apps/wpm/services.py
@@ -131,7 +131,7 @@ def do_in(mio: MIO):
                 wm.update_by = do_user
                 wm.save()
             elif new_count == 0:
-                pass
+                wm.delete()
             else:
                 raise ParseError('车间物料不足')