diff --git a/app/Services/WechatPayService.php b/app/Services/WechatPayService.php
index 7fa4efd..fd1f36d 100644
--- a/app/Services/WechatPayService.php
+++ b/app/Services/WechatPayService.php
@@ -115,7 +115,7 @@ class WechatPayService
         $appid = config("wechat.official_account.default.app_id");
         $data = [
             "appid" => $appid,
-            "out_bill_no" => $trade_no,
+            "out_batch_no" => $trade_no,
             "batch_name" => $remark,
             "batch_remark" => $remark,
             "total_amount" => $amount,