diff --git a/webapp/controller/SignController.class.php b/webapp/controller/SignController.class.php
index 9f455a3..6174a45 100644
--- a/webapp/controller/SignController.class.php
+++ b/webapp/controller/SignController.class.php
@@ -76,7 +76,7 @@ class SignController{
                     return;
                 }
                 //获得奖励
-                $s = $this->getSign($sign_days + 90000);
+                $s = $this->getSign($sign_days % 7 + 90000);
                 $item_id = $s['item_id'];
                 $num = $s['num'];
             } else {