diff --git a/webapp/controller/TankController.class.php b/webapp/controller/TankController.class.php
index c4e4926..ba646c4 100644
--- a/webapp/controller/TankController.class.php
+++ b/webapp/controller/TankController.class.php
@@ -29,6 +29,8 @@ class TankController{
             'max_lv' => $tank_meta['max_lv'],
             'compose' => $tank_meta['compose'],
             'debris' => $tank_meta['debris'],
+            'gold_cost_int' => $tank_meta['costgold_int'],
+            'gold_cost' => $tank_meta['costgold'],
         );
         return $t;
     }
@@ -424,7 +426,15 @@ class TankController{
                                        ':tank_id' => $tank_id
                                    ));
         if (!$row) {
-            phpcommon\sendError(ERR_USER_BASE + 1, '坦克不存在');
+            phpcommon\sendError(ERR_USER_BASE + 2, '坦克不存在');
+            return;
+        }
+        $rowCoin = $conn->execQueryOne('SELECT coin_num FROM user WHERE accountid=:account_id;',
+                                       array(
+                                           ':account_id' => $account_id,
+                                       ));
+        if (!$rowCoin) {
+            phpcommon\sendError(ERR_USER_BASE + 1, '没有这个角色');
             return;
         }
         $t = $this->getTank($tank_id);
@@ -436,21 +446,38 @@ class TankController{
             phpcommon\sendError(ERR_USER_BASE + 3, '坦克已到满级');
             return;
         }
-        $coin_num = $t['cost'] * ceil($row['tank_level'] / 5) + $t['cost_int'];
+        $fragment_num = $t['cost'] * ceil($row['tank_level'] / 5) + $t['cost_int'];
+        $coin_num = $c['gold_cost'] * ceil($row['tank_level'] / 5) + $c['gold_cost_int'];
         if ($free == 1) {
             $coin_num = 0;
+            $fragment_num = 0;
         }
-        if ($coin_num > $row['fragment_num'] ){
+        if ($coin_num > $rowCoin['coin_num']) {
+            phpcommon\sendError(ERR_USER_BASE + 6, '金币不足');
+            return;
+        }
+        if ($fragment_num > $row['fragment_num'] ){
             phpcommon\sendError(ERR_USER_BASE + 4, '坦克碎片数量不足');
             return;
         }
+        $retCoin = $conn->execScript('UPDATE user SET coin_num=:coin_num, modify_time=:modify_time ' .
+                                     ' WHERE accountid=:account_id;',
+                                     array(
+                                         ':account_id' => $account_id,
+                                         ':coin_num' => $rowCoin['coin_num'] - $coin_num,
+                                         ':modify_time' => time()
+                                     ));
+        if (!$retCoin) {
+            die();
+            return;
+        }
         $ret = $conn->execScript('UPDATE tank SET tank_level=:tank_level, fragment_num=:fragment_num, modify_time=:modify_time ' .
                                  ' WHERE accountid=:account_id AND tank_id=:tank_id;',
                                  array(
                                      ':account_id' => $account_id,
                                      ':tank_id' => $tank_id,
                                      ':tank_level' => $row['tank_level'] + 1,
-                                     ':fragment_num' => $row['fragment_num'] - $coin_num,
+                                     ':fragment_num' => $row['fragment_num'] - $fragment_num,
                                      ':modify_time' => time()
                                  ));
         if (!$ret) {