diff --git a/apps/wpm/views.py b/apps/wpm/views.py
index 02b341d7..5bc886fe 100644
--- a/apps/wpm/views.py
+++ b/apps/wpm/views.py
@@ -799,9 +799,6 @@ class MlogbwViewSet(CustomModelViewSet):
         mlogb:Mlogb = instance.mlogb
         if mlogb.material_out is not None and mlogb.wpr is not None:
             raise ParseError("不能删除该产出明细")
-        ftest = instance.ftest
-        if ftest:
-            ftest.delete()
         
         # 如果是输入且输出追踪到个，需同步删除
         material_in: Material = mlogb.material_in
@@ -812,5 +809,8 @@ class MlogbwViewSet(CustomModelViewSet):
                 instance.mlogbw_to.delete()
                 instance.delete()
                 Mlogbw.cal_count_notok(instance.mlogbw_to.mlogb)
+        ftest = instance.ftest
+        if ftest:
+            ftest.delete()
         instance.delete()
         Mlogbw.cal_count_notok(mlogb)