diff --git a/webapp/controller/OutAppPlanetController.class.php b/webapp/controller/OutAppPlanetController.class.php
index 8a6f324a..2bd39585 100644
--- a/webapp/controller/OutAppPlanetController.class.php
+++ b/webapp/controller/OutAppPlanetController.class.php
@@ -1,7 +1,14 @@
 <?php
 
+require_once('models/Transaction.php');
+
+require_once('services/BlockChainService.php');
+
 use phpcommon\SqlHelper;
 
+use models\Transaction;
+use services\BlockChainService;
+
 class OutAppPlanetController extends BaseController {
 
     public function buy()
@@ -9,6 +16,24 @@ class OutAppPlanetController extends BaseController {
         $netId = getReqVal('net_id', '');
         $address = getReqVal('address', '');
         $num = getReqVal('num', '');
+
+        $decimals = BlockChainService::getCurrencyDecimals(BlockChainService::CURRENCY_USDT);
+        if ($decimals === false) {
+            myself()->_rspErr(1, 'deciamls error');
+            returna;
+        }
+
+        $price = BlockChainService::formatCurrencyEx(1, $decimals);
+        $rspObj = BlockChainService::beNftMallTransBuyPlanet(
+            Transaction::BUY_OUTAPP_PLANET_ACTION_TYPE,
+            $address,
+            array(
+                '280001'
+            ),
+            BlockChainService::CURRENCY_USDT,
+            $price
+        );
+
     }
 
 }
diff --git a/webapp/services/BlockChainService.php b/webapp/services/BlockChainService.php
index 9cb3b7bb..57c518c9 100644
--- a/webapp/services/BlockChainService.php
+++ b/webapp/services/BlockChainService.php
@@ -166,7 +166,7 @@ class BlockChainService {
         }
     }
 
-    public static function beNftMallTransBuyPlanet($address, $ids, $currency, $price)
+    public static function beNftMallTransBuyPlanet($actionType, $address, $ids, $currency, $price)
     {
         if (!($actionType > Transaction::BUY_BEGIN_ACTION_TYPE &&
               $actionType < Transaction::BUY_END_ACTION_TYPE)) {