diff --git a/extend/chat/model/Base.php b/extend/chat/model/Base.php
index 955697d..888dc22 100644
--- a/extend/chat/model/Base.php
+++ b/extend/chat/model/Base.php
@@ -210,6 +210,7 @@ namespace extend\chat\model;
              'content' => $message['content'],
              'image_url' => $message['image_url'],
              'order_id' => $message['order_id'],
+             'coupon' => $message['coupon'],
              'send_time' => $time,
              'session_id' => $session_id,
          ];