diff --git a/apps/pm/filters.py b/apps/pm/filters.py
index 9a0bd81a..16eb1364 100644
--- a/apps/pm/filters.py
+++ b/apps/pm/filters.py
@@ -52,6 +52,7 @@ class MtaskFilter(filters.FilterSet):
             "mgroup__process": ["exact"],
             "mgroup__process__cate": ["exact"],
             "material_out": ["exact"],
+            "material_out__name": ["exact"],
             "material_out__type": ["exact"],
             "material_out__is_hidden": ["exact"],
             "mgroup__belong_dept__name": ["exact"],