diff --git a/Application/Base/Business/ShiftPlayer.class.php b/Application/Base/Business/ShiftPlayer.class.php
index 04686bf21..701a22213 100644
--- a/Application/Base/Business/ShiftPlayer.class.php
+++ b/Application/Base/Business/ShiftPlayer.class.php
@@ -164,6 +164,10 @@ class ShiftPlayer
 
     private function updateMend($userId, $amount)
     {
+        if (count($this->userIds) == 0) {
+            return true;
+        }
+        
         return M('mend', 'tab_')
             ->where(['task_id' => $this->task['id'], 'user_id' => $userId])
             ->save(['status' => 1, 'pay_amount' => ['exp', 'pay_amount+' . $amount], 'update_time' => time()]);