diff --git a/backend/application/api/controller/Order.php b/backend/application/api/controller/Order.php
index 17ca338..32ac6d5 100644
--- a/backend/application/api/controller/Order.php
+++ b/backend/application/api/controller/Order.php
@@ -371,7 +371,8 @@ class Order extends Api
      */
     private function assertVirtualPaySignature()
     {
-        $token = (string)config('common.virtual_pay.msg_token');
+        $virtualPay = config('common.virtual_pay');
+        $token = is_array($virtualPay) ? (string)($virtualPay['msg_token'] ?? '') : '';
         if ($token === '') {
             throw new \Exception('未配置虚拟支付消息令牌');
         }
diff --git a/backend/application/common/service/VirtualPayService.php b/backend/application/common/service/VirtualPayService.php
index e080730..167f88c 100644
--- a/backend/application/common/service/VirtualPayService.php
+++ b/backend/application/common/service/VirtualPayService.php
@@ -43,7 +43,7 @@ class VirtualPayService
      */
     public static function createClientPay($orderNo, $amountYuan, $openid)
     {
-        $offerId = (string)config('common.virtual_pay.offer_id');
+        $offerId = (string)(self::payConfig()['offer_id'] ?? '');
         if ($offerId === '') {
             self::logMissingOfferId();
             throw new \Exception('未配置虚拟支付 OfferID');
@@ -159,9 +159,11 @@ class VirtualPayService
      */
     public static function decryptMessage($encrypt, $msgSignature, $nonce, $timestamp)
     {
-        $token = (string)config('common.virtual_pay.msg_token');
-        $aesKey = (string)config('common.virtual_pay.aes_key');
-        $appId = (string)config('common.wechat.app_id');
+        $payConfig = self::payConfig();
+        $wechat = config('common.wechat');
+        $token = (string)($payConfig['msg_token'] ?? '');
+        $aesKey = (string)($payConfig['aes_key'] ?? '');
+        $appId = is_array($wechat) ? (string)($wechat['app_id'] ?? '') : '';
         if ($token === '' || $aesKey === '' || $appId === '') {
             throw new \Exception('未配置虚拟支付消息加解密参数');
         }
@@ -378,6 +380,17 @@ class VirtualPayService
         return (string)$sessionKey;
     }
 
+    /**
+     * ThinkPHP 5 的 config() 只按第一个点拆成两级，三级键会读成空
+     * @return array
+     */
+    private static function payConfig()
+    {
+        $config = config('common.virtual_pay');
+
+        return is_array($config) ? $config : [];
+    }
+
     /**
      * OfferID 为空时记下 .env 有没有被读到，不记录密钥内容
      */
@@ -431,7 +444,7 @@ class VirtualPayService
         if ($fen < 1) {
             throw new \Exception('支付金额不能小于0.01元');
         }
-        $coinPerYuan = (int)config('common.virtual_pay.coin_per_yuan');
+        $coinPerYuan = (int)(self::payConfig()['coin_per_yuan'] ?? 0);
         if ($coinPerYuan < 1) {
             $coinPerYuan = 1;
         }
@@ -456,7 +469,7 @@ class VirtualPayService
      */
     private static function env()
     {
-        return (int)config('common.virtual_pay.env') === 1 ? 1 : 0;
+        return (int)(self::payConfig()['env'] ?? 0) === 1 ? 1 : 0;
     }
 
     /**
@@ -465,7 +478,7 @@ class VirtualPayService
      */
     private static function appKey()
     {
-        $config = config('common.virtual_pay');
+        $config = self::payConfig();
         $key = self::env() === 1 ? (string)($config['sandbox_app_key'] ?? '') : (string)($config['app_key'] ?? '');
         if ($key === '') {
             throw new \Exception('未配置虚拟支付 AppKey');