diff --git a/include/app_config.hpp b/include/app_config.hpp
index 679f0a7..9cdbcf2 100644
--- a/include/app_config.hpp
+++ b/include/app_config.hpp
@@ -57,6 +57,10 @@ struct MQTTConfig
     std::string username;
     std::string password;
     int keep_alive;
+
+    int qos = 1;               // 默认 QoS 级别
+    bool clean_session = true; // 默认 clean session
+
     VehicleMQTTTopics topics;
 };