diff --git a/wchat/officialaccount/Tag.php b/wchat/officialaccount/Tag.php
index a373d7c..fa88db7 100644
--- a/wchat/officialaccount/Tag.php
+++ b/wchat/officialaccount/Tag.php
@@ -27,8 +27,7 @@ class Tag extends AfficialAccount
 
 		$config = $this->config->getAccessToken();
 
-		$this->request->setData(json_encode($params));
-		$result = $this->request->post($this->generate_url . $config);
+		$result = $this->request->post($this->generate_url . $config, $params);
 		$this->request->setErrorField('errcode');
 		$this->request->setErrorMsgField('errmsg');
 		if (!$result->isResultsOK()) {