diff --git a/library/think/cache/driver/Redis.php b/library/think/cache/driver/Redis.php
index a58151f2..93f7ca71 100644
--- a/library/think/cache/driver/Redis.php
+++ b/library/think/cache/driver/Redis.php
@@ -46,9 +46,12 @@ class Redis extends Driver
         if (!empty($options)) {
             $this->options = array_merge($this->options, $options);
         }
-        $func          = $this->options['persistent'] ? 'pconnect' : 'connect';
         $this->handler = new \Redis;
-        $this->handler->$func($this->options['host'], $this->options['port'], $this->options['timeout']);
+        if ($this->options['persistent']) {
+            $this->handler->pconnect($this->options['host'], $this->options['port'], $this->options['timeout'], 'persistent_id_' . $this->options['select']);
+        } else {
+            $this->handler->connect($this->options['host'], $this->options['port'], $this->options['timeout']);
+        }
 
         if ('' != $this->options['password']) {
             $this->handler->auth($this->options['password']);