diff --git a/app/Helper/Baofu/Baofu.php b/app/Helper/Baofu/Baofu.php
index 9a2e35f..ed407d4 100644
--- a/app/Helper/Baofu/Baofu.php
+++ b/app/Helper/Baofu/Baofu.php
@@ -108,7 +108,7 @@ class Baofu
             'goodsName' => $params['goodsName'],
             'amount' => $params['amount'],
             'outOrderNo' => $params['outOrderNo'],
-            'agreementNo' => $params['agreementNo'],
+            'agreementNo' => Rsa::encryptByCERFile($params['agreementNo'], $this->getCerFilePath()),
             'notifyUrl' => NotifyList::getNotifyUrl('payment', $token),
             'expireDate' => $params['expireDate'],
             'validDate' => $params['validDate'],