diff --git a/doc/_common.py b/doc/_common.py
index b52b4cab..bfc9177b 100644
--- a/doc/_common.py
+++ b/doc/_common.py
@@ -383,6 +383,7 @@ class NewGoods(object):
         self.fields = [
             ['id', 0, '商品唯一id'],
             ['goods_id', 0, '商品id'],
+            ['goods_num', 0, '堆叠个数,例如：砖石数量'],
             ['max_amount', 0, '最高购买数量,单次购买'],
             ['shop_id', 0, '所属商店id'],
             ['shopstage', 0, '商店层级'],