diff --git a/app/order/controller/CashOutIndex.php b/app/order/controller/CashOutIndex.php
index ad2602a..3a1d50b 100644
--- a/app/order/controller/CashOutIndex.php
+++ b/app/order/controller/CashOutIndex.php
@@ -30,7 +30,7 @@ class CashOutIndex extends Controller
         $data['real_name'] = $post['real_name'];
         $user = new UserModel;
         $user_rest = $user->getOne(['id'=>$data['userid']],'RestAmount')['RestAmount'];
-        $rest = $user_rest - $post['cash_out_money'];
+        $rest = $user_rest - abs($post['cash_out_money']);
 
         if($data['money']<=0){
             die;