diff --git a/extend/VerifyDun/BankCard.php b/extend/VerifyDun/BankCard.php
index 8ca3cba..8271a53 100644
--- a/extend/VerifyDun/BankCard.php
+++ b/extend/VerifyDun/BankCard.php
@@ -17,7 +17,6 @@ class BankCard extends Base
      */
     public function checkBankCard(array $params): string
     {
-        return "";
         try {
             // 组合请求地址
             $api_url = $this->api_url . $this->version . '/bankcard/check';