diff --git a/WePayV3/Contracts/BasicWePay.php b/WePayV3/Contracts/BasicWePay.php
index 772724d..a31c820 100644
--- a/WePayV3/Contracts/BasicWePay.php
+++ b/WePayV3/Contracts/BasicWePay.php
@@ -118,7 +118,7 @@ abstract class BasicWePay
         }
 
         // 自动配置平台证书
-        if (empty($this->config['mp_cert_serial']) || empty($this->config['mp_cert_content'])) {
+        if (empty($options['mp_cert_serial']) || empty($options['mp_cert_content'])) {
             if ($this->autoCert) $this->_autoCert();
         } else {
             $this->config['mp_cert_serial'] = $options['mp_cert_serial'];
@@ -340,8 +340,11 @@ abstract class BasicWePay
      */
     protected function signVerify($data, $sign, $serial)
     {
-        $cert = $this->_getCert($serial);
-        return @openssl_verify($data, base64_decode($sign), openssl_x509_read($cert), 'sha256WithRSAEncryption');
+        if (stripos($this->config['mp_cert_serial'], 'PUB_KEY_ID_') !== false) {
+            return @openssl_verify($data, base64_decode($sign), $this->config['mp_cert_content'], OPENSSL_ALGO_SHA256);
+        } else {
+            return @openssl_verify($data, base64_decode($sign), openssl_x509_read($this->_getCert($serial)), 'sha256WithRSAEncryption');
+        }
     }
 
     /**
diff --git a/_test/pay-v3-config.php b/_test/pay-v3-config.php
index d5aa74a..0f6edc0 100644
--- a/_test/pay-v3-config.php
+++ b/_test/pay-v3-config.php
@@ -16,20 +16,20 @@
 
 $certPublic = <<<CERT
 -----BEGIN CERTIFICATE-----
-具体证书全文内容
+文件文本内容
 -----END CERTIFICATE-----
 CERT;
 
 $certPrivate = <<<CERT
 -----BEGIN PRIVATE KEY-----
-具体证书全文内容
+文件文本内容
 -----END PRIVATE KEY-----
 CERT;
 
 // 支付证书内容
 $certPayment = <<<CERT
 -----BEGIN PUBLIC KEY-----
-具体证书全文内容
+文件文本内容
 -----END PUBLIC KEY-----
 CERT;
 
@@ -62,19 +62,19 @@ CERT;
 
 return [
     // 可选，公众号APPID
-    'appid'           => 'wxbbc5782d4d77a43b',
+    'appid'           => 'wx3760axxxxxxxxxxx',
     // 必填，微信商户编号ID
-    'mch_id'          => '1643053551',
+    'mch_id'          => '152xxxxxxxx',
     // 必填，微信商户V3接口密钥
-    'mch_v3_key'      => 'ThinkAdminThinkAdminThinkAdminTh',
+    'mch_v3_key'      => '98b7f45xxxxxxxxxxxxxxxxxxxxxxxxxx',
     // 可选，微信商户证书序列号，可从公钥中提取，请求签名使用
-    'cert_serial'     => '',
+    'cert_serial'     => '49055xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
     // 必填，微信商户证书公钥，支持证书内容或文件路径，仅用于提取序号
     'cert_public'     => $certPublic,
-    // 必填，微信商户证书私钥，支持证书内容或文件路径，用请求数据签名
+    // 必填，微信商户证书私钥，支持证书内容或文件路径，用于请求数据签名
     'cert_private'    => $certPrivate,
     // 可选，微信平台证书序号或支付证书序号，用于接口请求序号
-    'mp_cert_serial'  => 'PUB_KEY_ID_0116430535512025030300389200001906',
+    'mp_cert_serial'  => 'PUB_KEY_ID_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
     // 可选，微信平台证书内容或支付证书内容
     'mp_cert_content' => $certPayment,
     // 可选，运行时的文件缓存路径