diff --git a/Application/Home/Controller/FinanceController.class.php b/Application/Home/Controller/FinanceController.class.php
index dd031d65c..d65b914f6 100644
--- a/Application/Home/Controller/FinanceController.class.php
+++ b/Application/Home/Controller/FinanceController.class.php
@@ -233,7 +233,7 @@ class FinanceController extends BaseController
             foreach ($months as $month) {
                 $data['begin_time'] = strtotime($month);
                 $data['end_time'] = strtotime('+1 month', $data['begin_time']) - 1;
-                $balance = bcadd($balance, $withdrawModel->$fun($promote, $data));
+                $balance = bcadd($balance, $withdrawModel->$fun($promote, $data), 2);
             }
         }