diff --git a/apps/wpm/views.py b/apps/wpm/views.py
index 72a3cea4..cee9c264 100644
--- a/apps/wpm/views.py
+++ b/apps/wpm/views.py
@@ -707,7 +707,7 @@ class MlogbwViewSet(CustomModelViewSet):
         # 如果是输入且输出追踪到个，需同步创建
         material_in:Material = mlogb.material_in
         if material_in is not None:
-            mlogb_qs = Mlogb.objects.filter(mlogbw_from=ins)
+            mlogb_qs = Mlogb.objects.filter(mlogbw_from=mlogb)
             material_out:Material = mlogb.mlog.material_out
             mtype = route.process.mtype if route.process else None
             if material_in.tracking == Material.MA_TRACKING_SINGLE and mtype == Process.PRO_DIV: