diff --git a/webapp/controller/VoiceController.class.php b/webapp/controller/VoiceController.class.php
index 4c74261..34a5d57 100644
--- a/webapp/controller/VoiceController.class.php
+++ b/webapp/controller/VoiceController.class.php
@@ -33,6 +33,7 @@ class VoiceController{
         $md5 = md5($data);
         $r = $this->getRedis($md5);
         $r->set('game2002:voice:' . $md5, $data);
+        $r -> pexpire('game2002:voice:' . $md5, 1000 * 600); 
         echo json_encode(array(
             'errcode' => 0,
             'errmsg' => '',