diff --git a/webapp/controller/ChipController.class.php b/webapp/controller/ChipController.class.php
index d2dca3ad..b996bf1e 100644
--- a/webapp/controller/ChipController.class.php
+++ b/webapp/controller/ChipController.class.php
@@ -497,13 +497,13 @@ class ChipController extends BaseAuthedController
             }
             $chip_param = $data;
         }
-        $cumulative_cost = 0;
+        $cumulative_cost = [];
         $token_id_arr = [];
         foreach ($chip_param as $value){
-            $cumulative_cost += $value['cost'];
+            array_push($cumulative_cost,$value['cost']);
             array_push($token_id_arr,$value['token_id']);
         }
-        $this->_rspData(['data'=>['cost'=>$cumulative_cost,'token_ids'=>implode(' ',$token_id_arr)]]);
+        $this->_rspData(['data'=>['cost'=>$cumulative_cost,'token_ids'=>$token_id_arr]]);
     }
 
     public function lockChip(){