diff --git a/apps/qm/serializers.py b/apps/qm/serializers.py
index 9d2d490e..ebf69783 100644
--- a/apps/qm/serializers.py
+++ b/apps/qm/serializers.py
@@ -66,6 +66,7 @@ class FtestWorkCreateUpdateSerializer(CustomModelSerializer):
 class FtestWorkSerializer(CustomModelSerializer):
     material_name = serializers.StringRelatedField(
         source='material', read_only=True)
+    material_cate = serializers.CharField(source='material.cate', read_only=True)
 
     class Meta:
         model = FtestWork