diff --git a/doc/Market.py b/doc/Market.py
index b146b835..fb72cd8a 100644
--- a/doc/Market.py
+++ b/doc/Market.py
@@ -412,7 +412,7 @@ class Market(object):
                     ['account', '', '账号id'],
                     ['token', '', 'token'],
                     ['nft_token', '', 'nft_token'],
-                    ['item_id', '', '道具id,']
+                    ['item_id', '', '道具id,'],
                     ['s_price', '', '出售价格USDT'],
                     ['amount', 0, '出售数量'],
                     ['payment_token_address', '', 'payment_token_address'],