diff --git a/webapp/models/Mall.php b/webapp/models/Mall.php
deleted file mode 100644
index a1a8411e..00000000
--- a/webapp/models/Mall.php
+++ /dev/null
@@ -1,150 +0,0 @@
-<?php
-
-namespace models;
-
-use phpcommon\SqlHelper;
-
-class Mall extends BaseModel {
-
-    const PENDING_STATE = 0;
-    const BUY_OK_STATE = 1;
-    const CANCEL_STATE = 2;
-
-    public static function findByGoodsUuid($goodsUuid)
-    {
-        $row = SqlHelper::ormSelectOne(
-            myself()->_getMysql(''),
-            't_mall',
-            array(
-                'goods_uuid' => $goodsUuid
-            )
-        );
-        return $row;
-    }
-
-    public static function findByOrderId($orderId)
-    {
-        $row = SqlHelper::ormSelectOne(
-            myself()->_getMysql(''),
-            't_mall',
-            array(
-                'order_id' => $orderId
-            )
-        );
-        return $row;
-    }
-
-    public static function add($orderId, $goodsUuid, $itemId, $itemNum,
-                               $currency, $price)
-    {
-        SqlHelper::insert
-            (myself()->_getMysql(''),
-             't_mall',
-             array(
-                 'order_id' => $orderId,
-                 'goods_uuid' => $goodsUuid,
-                 'seller' => myself()->_getAccountId(),
-                 'seller_address' => myself()->_getAddress(),
-                 'item_id' => $itemId,
-                 'item_num' => $itemNum,
-                 'currency' => $currency,
-                 'price' => $price,
-                 'last_modify_price_time' => myself()->_getNowTime(),
-                 'createtime' => myself()->_getNowTime(),
-                 'modifytime' => myself()->_getNowTime(),
-             ));
-    }
-
-    public static function modifyPrice($goodsUuid, $price)
-    {
-        SqlHelper::update
-            (myself()->_getMysql(''),
-             't_mall',
-             array(
-                 'goods_uuid' => $goodsUuid
-             ),
-             array(
-                 'price' => $price,
-                 'last_modify_price_time' => myself()->_getNowTime(),
-             )
-            );
-    }
-
-    public static function cancel($goodsUuid)
-    {
-        SqlHelper::update
-            (myself()->_getMysql(''),
-             't_mall',
-             array(
-                 'goods_uuid' => $goodsUuid
-             ),
-             array(
-                 'status' => self::CANCEL_STATE
-             )
-            );
-    }
-
-    public static function buyOk($orderId, $buyer)
-    {
-        SqlHelper::update
-            (myself()->_getMysql(''),
-             't_mall',
-             array(
-                 'order_id' => $orderId
-             ),
-             array(
-                 'status' => self::BUY_OK_STATE,
-                 'buyer' => $buyer,
-                 'buy_ok_time' => myself()->_getNowTime()
-             )
-            );
-    }
-
-    public static function buy($goodsUuid, $buyer)
-    {
-        SqlHelper::update
-            (myself()->_getMysql(''),
-             't_mall',
-             array(
-                 'goods_uuid' => $goodsUuid
-             ),
-             array(
-                 'last_buyer' => $buyer,
-                 'last_buy_time' => myself()->_getNowTime()
-             )
-            );
-    }
-
-    public static function toDto($row)
-    {
-        $cancelCd = -1;
-        $modifyCd = -1;
-        if ($row['seller'] == myself()->_getAccountId() &&
-            $row['seller_address'] == myself()->_getAddress()) {
-            $cancelCd = myself()->_getNowTime() - $row['last_buy_time'];
-            if ($cancelCd > 3600 * 24) {
-                $cancelCd = 0;
-            }
-            $modifyCd = myself()->_getNowTime() - $row['last_modify_price_time'];
-            if ($modifyCd > 60 * 10) {
-                $modifyCd = 0;
-            }
-            if ($row['status'] != self::PENDING_STATE) {
-                $cancelCd = -1;
-                $modifyCd = -1;
-            }
-        }
-        return array(
-            'goods_uuid' => $row['goods_uuid'],
-            'seller' => $row['seller'],
-            'seller_address' => $row['seller_address'],
-            'item_id' => $row['item_id'],
-            'item_num' => $row['item_num'],
-            'currency' => $row['currency'],
-            'price' => $row['price'],
-            'cancel_countdown' => $cancelCd,
-            'modify_countdown' => $modifyCd
-        );
-    }
-
-}