diff --git a/doc/_common.py b/doc/_common.py
index 3e55c5b2..6afe1f88 100644
--- a/doc/_common.py
+++ b/doc/_common.py
@@ -1866,6 +1866,7 @@ class RechargeGoods(object):
             ['price', '', '价格'],
             ['present_diamond', 0, '赠送钻石'],
             ['max_buy_times', 0, '充值次数上限'],
+            ['can_email_buy', 0, '是否支持邮件购买'],
             ['!currency_list', [RechargeCurrency()], '货币列表'],
         ]