diff --git a/doc/Market.py b/doc/Market.py
index b8a67e1e..999d359e 100644
--- a/doc/Market.py
+++ b/doc/Market.py
@@ -464,6 +464,7 @@ class Market(object):
                     _common.ReqHead(),
                     ['account', '', '账号id'],
                     ['idx', '', '出售的idx'],
+                    ['s_price', '', '出售价格USDT'],
                 ],
                 'response': [
                     _common.RspHead()
diff --git a/webapp/controller/MarketController.class.php b/webapp/controller/MarketController.class.php
index 439ad24a..8b6898cb 100644
--- a/webapp/controller/MarketController.class.php
+++ b/webapp/controller/MarketController.class.php
@@ -687,6 +687,7 @@ class MarketController extends BaseAuthedController
         }
 
         $idx = getReqVal('idx', '');
+        $s_price = getReqVal('s_price', '');
 
         $goods = $this->getGoodsByIdx($idx);
         if (!$goods) {
@@ -694,6 +695,11 @@ class MarketController extends BaseAuthedController
             return;
         }
 
+        if ($s_price != $goods['s_price']) {
+            $this->_rspErr(1, 'price not match, idx:' . $idx);
+            return;
+        }
+        
         $response = services\BlockChainService::gameItemMarketBuy(
             Transaction::BUY_GOODS_FROM_MARKET_ACTION_TYPE,
             $goods['owner_address'],