diff --git a/wchat/common/Miniprogarampage.php b/wchat/common/Miniprogarampage.php
index 8900471..4b061ef 100644
--- a/wchat/common/Miniprogarampage.php
+++ b/wchat/common/Miniprogarampage.php
@@ -107,7 +107,9 @@ abstract class Miniprogarampage implements Progaram
 		$this->request->setIsSSL(true);
 		$this->request->setData(null);
 		$this->request->setUseSwoole($config->isUsrSwoole());
-		$this->request->setAgent($config->getAgent());
+		if (!empty($config->getAgent())) {
+			$this->request->setAgent($config->getAgent());
+		}
 		if (!empty($config->getSslCert())) {
 			$this->request->setSslCertFile($config->getSslCert());
 		}