diff --git a/app/listener/DeliveryGoods.php b/app/listener/DeliveryGoods.php
index 37b28212..54fc1a54 100644
--- a/app/listener/DeliveryGoods.php
+++ b/app/listener/DeliveryGoods.php
@@ -60,7 +60,7 @@ class DeliveryGoods
         for ($i=$begin; $i<=$end; $i++) {
             $strarr[$i] = $re;
         }
-        if ($begin >= $end || $begin >= $last || $end > $last) return false;
+        if ($begin > $end || $begin > $last || $end > $last) return '';
         return implode('', $strarr);
     }