diff --git a/WeChat/Contracts/BasicAliPay.php b/WeChat/Contracts/BasicAliPay.php
index 24c0ae9..712893e 100644
--- a/WeChat/Contracts/BasicAliPay.php
+++ b/WeChat/Contracts/BasicAliPay.php
@@ -321,7 +321,7 @@ abstract class BasicAliPay
      */
     private function getAliPublicKey()
     {
-        $content = wordwrap($this->config->get('public_key'), 64, "\n", true);
+        $content = wordwrap($this->trimCert($this->config->get('public_key')), 64, "\n", true);
         return "-----BEGIN PUBLIC KEY-----\n{$content}\n-----END PUBLIC KEY-----";
     }
 
diff --git a/_test/alipay.php b/_test/alipay.php
index eb3ae7f..b091360 100644
--- a/_test/alipay.php
+++ b/_test/alipay.php
@@ -35,7 +35,7 @@
  */
 
 return [
-// 沙箱模式
+    // 沙箱模式
     'debug'            => true,
     // 签名类型 ( RSA|RSA2 )
     'sign_type'        => 'RSA2',