diff --git a/wchat/qq/SecCheck.php b/wchat/qq/SecCheck.php
index 0c6c695..499651a 100644
--- a/wchat/qq/SecCheck.php
+++ b/wchat/qq/SecCheck.php
@@ -54,10 +54,10 @@ class SecCheck extends SmallProgram
 		$this->request->setIsSSL(true);
 
 		$url = '/' . ltrim($this->_msgUrl, '/') . $this->config->getAccessToken();
-		return $this->request->post($url, json_encode([
+		return $this->request->post($url, [
 			'appid'   => $this->config->getAppid(),
 			'content' => $content
-		], JSON_UNESCAPED_UNICODE));
+		]);
 
 	}