diff --git a/app/data/controller/UserTransfer.php b/app/data/controller/UserTransfer.php
index 02c583fac..15b6da383 100644
--- a/app/data/controller/UserTransfer.php
+++ b/app/data/controller/UserTransfer.php
@@ -93,7 +93,7 @@ class UserTransfer extends Controller
             if (in_array($data['status'], [0, 1, 2, 3])) {
                 $data['last_at'] = date('Y-m-d H:i:s');
             } elseif ($data['status'] == 4) {
-                $data['trade_no'] = CodeExtend::uniqidDate(14);
+                $data['trade_no'] = CodeExtend::uniqidDate(20);
                 $data['trade_time'] = date('Y-m-d H:i:s');
                 $data['change_time'] = date('Y-m-d H:i:s');
                 $data['change_desc'] = ($data['remark'] ?: '线下打款成功') . ' By ' . AdminService::instance()->getUserName();