diff --git a/include/mqtt_client_wrapper.hpp b/include/mqtt_client_wrapper.hpp
index 92faf3c..10d2781 100644
--- a/include/mqtt_client_wrapper.hpp
+++ b/include/mqtt_client_wrapper.hpp
@@ -12,9 +12,3 @@
 
 // 启动 MQTT 客户端线程（内部自动重连、订阅等）
 void mqtt_client_thread_func();
-
-// 外部可访问的 MQTT 客户端指针
-extern std::shared_ptr<MQTTClient> mqtt_client;
-
-// 请求 MQTT 客户端重启
-extern std::atomic<bool> mqtt_restart_required;
diff --git a/include/record_manager.hpp b/include/record_manager.hpp
index 9aff7b8..f630a33 100644
--- a/include/record_manager.hpp
+++ b/include/record_manager.hpp
@@ -67,4 +67,6 @@ class RecordManager
     std::thread scan_thread_;
     bool running_ = false;
     int scan_interval_sec_ = 60;
-};
\ No newline at end of file
+};
+
+extern std::shared_ptr<RecordManager> g_record_manager;
diff --git a/src/main.cpp b/src/main.cpp
index 2d087ae..98c853c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -36,7 +36,8 @@ int main()
     Logger::init(get_executable_dir_file_path("logs"), 7);
     LOG_INFO("[MAIN] ===== Vehicle Video Service Starting =====");
 
-    RecordManager rm("/home/aiec/srs/conf/kun_record.conf");
+    // 创建全局 RecordManager 实例
+    g_record_manager = std::make_shared<RecordManager>("/home/aiec/srs/conf/kun_record.conf");
 
     try
     {
diff --git a/src/mqtt_client_wrapper.cpp b/src/mqtt_client_wrapper.cpp
index 767b4d4..dcbc935 100644
--- a/src/mqtt_client_wrapper.cpp
+++ b/src/mqtt_client_wrapper.cpp
@@ -9,8 +9,10 @@
 #include <queue>
 #include <thread>
 
+#include "record_manager.hpp"
+
 std::shared_ptr<MQTTClient> mqtt_client;
-std::atomic<bool> mqtt_restart_required{false};
+
 extern std::atomic<bool> g_running;
 std::atomic<bool> g_streaming{false};
 std::string g_dispatch_id;
@@ -106,8 +108,6 @@ static void handle_video_down_request(const nlohmann::json& req)
 
     // 发布回复
     mqtt_client->publish(g_app_config.mqtt.topics.video_down, resp.dump(-1), 1);
-
-    LOG_INFO("[video_down] response sent");
 }
 
 static void handle_record_query_request(const nlohmann::json& req) {}
@@ -202,8 +202,6 @@ void mqtt_client_thread_func()
             mqtt_client.reset();
         }
 
-        mqtt_restart_required = false;
-
         if (!g_running) break;
 
         // 短暂等待再重连
diff --git a/src/record_manager.cpp b/src/record_manager.cpp
index 66935c5..015e3a6 100644
--- a/src/record_manager.cpp
+++ b/src/record_manager.cpp
@@ -7,6 +7,8 @@
 
 #include "logger.hpp"
 
+std::shared_ptr<RecordManager> g_record_manager = nullptr;
+
 namespace fs = std::filesystem;
 
 //