diff --git a/app/Utils/Helper.php b/app/Utils/Helper.php
index 960058ab..5f7dd587 100644
--- a/app/Utils/Helper.php
+++ b/app/Utils/Helper.php
@@ -31,7 +31,7 @@ class Helper
     public static function generateOrderNo(): string
     {
         $randomChar = mt_rand(10000, 99999);
-        return date('YmdHms') . $randomChar;
+        return date('YmdHms') . substr(microtime(), 2, 6) . $randomChar;
     }
 
     public static function exchange($from, $to)