diff --git a/wchat/wx/V3/TransferBatches.php b/wchat/wx/V3/TransferBatches.php
index 521af37..bafda3c 100644
--- a/wchat/wx/V3/TransferBatches.php
+++ b/wchat/wx/V3/TransferBatches.php
@@ -23,8 +23,9 @@ class TransferBatches extends SmallProgram
     {
         $body                         = [];
         $body['appid']                = $this->getConfig()->getAppid();
-        $body['out_trade_no']         = $detail->out_detail_no;
+        $body['out_batch_no']         = $detail->out_detail_no;
         $body["batch_name"]           = $this->getConfig()->getBody();
+        $body["body"]                 = $this->getConfig()->getBody();
         $body["batch_remark"]         = $this->getConfig()->getBody();
         $body["total_amount"]         = $detail->transfer_amount;
         $body["total_num"]            = 1;