diff --git a/application/wechat/controller/Config.php b/application/wechat/controller/Config.php
index f0c0a9713..2059bb2a5 100644
--- a/application/wechat/controller/Config.php
+++ b/application/wechat/controller/Config.php
@@ -108,7 +108,7 @@ class Config extends BasicAdmin {
         $data = $this->request->post();
         foreach ($data as $key => $vo) {
             if (in_array($key, ['wechat_cert_key_md5', 'wechat_cert_cert_md5']) && !empty($vo)) {
-                $filename = ROOT_PATH . 'public/upload/' . join('/', str_split($vo, 16)) . '.pem';
+                $filename = ROOT_PATH . 'static/upload/' . join('/', str_split($vo, 16)) . '.pem';
                 !file_exists($filename) && $this->error('支付双向证书上传失败，请重新上传！');
                 $keyname = str_replace('_md5', '', $key);
                 $data[$keyname] = $filename;