diff --git a/webht/third_party/vendorPlanSync/libraries/Tulanduo.php b/webht/third_party/vendorPlanSync/libraries/Tulanduo.php
index fe2d8703..e3176bfb 100644
--- a/webht/third_party/vendorPlanSync/libraries/Tulanduo.php
+++ b/webht/third_party/vendorPlanSync/libraries/Tulanduo.php
@@ -309,6 +309,10 @@ class Tulanduo
     {
         $apart = array(); $ret = array();
         foreach ($all_pag_info as $key => $pag) {
+            if ( ! isset($pag->PAG_DEI_SN)) {
+                // 通宵火车或其他, 不含该社行程
+                continue;
+            }
             // CH下的产品编号修正
             if (intval($pag->PAG_DEI_SN)===1 && ! empty($pag->PAG_Code)) {
                 $pag->PAG_Code = $this->ci->trippest->ch_code_transfer( mb_strtoupper($pag->PAG_Code));