diff --git a/apps/wpm/models.py b/apps/wpm/models.py
index 1d13c02c..01c814e2 100644
--- a/apps/wpm/models.py
+++ b/apps/wpm/models.py
@@ -320,8 +320,10 @@ class Mlogb(BaseModel):
     mtask = models.ForeignKey(Mtask, verbose_name='关联任务',
                               on_delete=models.CASCADE, related_name='mlogb_mtask', null=True, blank=True)
 
-    wm_in = models.ForeignKey(WMaterial, verbose_name='投入物料所在库存', on_delete=models.SET_NULL, null=True, blank=True)
-    wm_to = models.ForeignKey(WMaterial, verbose_name='产出物料所在库存', on_delete=models.SET_NULL, null=True, blank=True)
+    wm_in = models.ForeignKey(WMaterial, verbose_name='投入物料所在库存', 
+    on_delete=models.SET_NULL, null=True, blank=True, related_name="mlogb_wm_in")
+    wm_to = models.ForeignKey(WMaterial, verbose_name='产出物料所在库存', 
+    on_delete=models.SET_NULL, null=True, blank=True, related_name="mlogb_wm_to")
     material_in = models.ForeignKey(
         Material, verbose_name='投入物料', on_delete=models.CASCADE, related_name='mlogb_material_in',
         null=True, blank=True)