diff --git a/doc/Mall.py b/doc/Mall.py
index 9ea98c6f..7784b849 100644
--- a/doc/Mall.py
+++ b/doc/Mall.py
@@ -28,7 +28,7 @@ class Mall(object):
                 'url': 'webapp/index.php?c=Mall&a=sell',
                 'params': [
                     _common.ReqHead(),
-                    ['item_id', '', '道具id,'],
+                    ['item_id', '', '道具id,目前只能卖CEG'],
                     ['amount', '', '出售数量'],
                     ['currency', '', "选用币种 目前只支持CEG USDC USDT"],
                     ['price', '', '出售价格'],