diff --git a/src/main.cpp b/src/main.cpp
index 7ce2b40..c1cbae4 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -4,6 +4,7 @@
 #include <atomic>
 #include <chrono>
 #include <csignal>
+#include <memory>
 #include <thread>
 
 #include "app_config.hpp"
@@ -15,7 +16,7 @@
 #include "tunnel_client.hpp"
 
 std::atomic<bool> g_running(true);
-TunnelClient* g_tunnel_client = nullptr;
+std::unique_ptr<TunnelClient> g_tunnel_client;
 
 static void signal_handler(int signum)
 {
@@ -65,15 +66,19 @@ int main()
     RTMPManager::start_all();
 
     {
-        std::string vid = g_app_config.vehicle_id;
-        int local_http_port = 2980;
+        // 从配置里拿 VID（确保 AppConfig 有 vehicle_id 字段）
+        const std::string vid = g_app_config.vehicle_id;
+        const int local_http_port = 2980;
 
-        std::string tunnel_server = "ws://36.153.162.171:2088/tunnel";
-
-        g_tunnel_client = new TunnelClient(vid, tunnel_server, local_http_port);
+        // 建议也从 config 里读；这里先保留你的固定值
+        const std::string tunnel_server = "ws://36.153.162.171:2088/tunnel";
 
+        // 用 unique_ptr 管理生命周期
+        g_tunnel_client = std::make_unique<TunnelClient>(vid, tunnel_server, local_http_port);
         g_tunnel_client->start();
-        LOG_INFO("[MAIN] TunnelClient started: %s", tunnel_server.c_str());
+
+        // 关键：LOG_INFO 只接收一个参数，所以拼接成一个字符串
+        LOG_INFO(("[MAIN] TunnelClient started: " + tunnel_server).c_str());
     }
 
     // 启动 MQTT 线程
@@ -101,8 +106,7 @@ int main()
     if (g_tunnel_client)
     {
         g_tunnel_client->stop();
-        delete g_tunnel_client;
-        g_tunnel_client = nullptr;
+        g_tunnel_client.reset();
         LOG_INFO("[MAIN] TunnelClient stopped.");
     }