diff --git a/shop/ajax.orderdatasave.php b/shop/ajax.orderdatasave.php
index 86d147067..615723e3d 100644
--- a/shop/ajax.orderdatasave.php
+++ b/shop/ajax.orderdatasave.php
@@ -18,6 +18,12 @@ $_POST['sw_direct'] = get_session('ss_direct');
 
 $dt_data = serialize($_POST);
 
+// 동일한 주문번호가 있는지 체크
+$sql = " select count(*) as cnt from {$g5['g5_shop_order_data_table']} where od_id = '$od_id' ";
+$row = sql_fetch($sql);
+if($row['cnt'])
+    sql_query(" delete from {$g5['g5_shop_order_data_table']} where od_id = '$od_id' ");
+
 $sql = " insert into {$g5['g5_shop_order_data_table']}
             set od_id   = '$od_id',
                 dt_pg   = '{$default['de_pg_service']}',