diff --git a/apps/wpm/views.py b/apps/wpm/views.py
index 6f40d7ff..b6d3a4c9 100644
--- a/apps/wpm/views.py
+++ b/apps/wpm/views.py
@@ -546,7 +546,7 @@ class MlogbInViewSet(CreateModelMixin, UpdateModelMixin, DestroyModelMixin, Cust
                 # 找寻质检表
                 if material_out.tracking == Material.MA_TRACKING_SINGLE:
                     qctmat = QctMat.objects.filter(material=material_out, qct__is_deleted=False).order_by("-create_time").first()
-                    mlogbout.qct = qctmat.qct
+                    mlogbout.qct = qctmat.qct if qctmat else None
                 mlogbout.count_real = d_count_real
                 mlogbout.count_ok = d_count_ok
                 mlogbout.save()