diff --git a/src/communication/task_manager/src/task_manager_main.cpp b/src/communication/task_manager/src/task_manager_main.cpp
index a5f456f..b95a8fa 100644
--- a/src/communication/task_manager/src/task_manager_main.cpp
+++ b/src/communication/task_manager/src/task_manager_main.cpp
@@ -359,13 +359,35 @@ int handleMqttMessage(char* topicName, int topicLen, MQTTClient_message* message
 
 void try_subscribe_task_topic()
 {
-    if (!identity_ready.load()) return;
-    if (mqtt_topic_sub_task.empty()) return;
+    if (!identity_ready.load()) {
+        LOG_DEBUG("[TASK] Identity not ready, skipping subscribe");
+        return;
+    }
+    if (mqtt_topic_sub_task.empty()) {
+        LOG_DEBUG("[TASK] MQTT topic not configured, skipping subscribe");
+        return;
+    }
 
-    if (subscribed.exchange(true)) return;  // 已经订阅过了
+    if (!mqtt_manager.isConnected()) {
+        LOG_DEBUG("[TASK] MQTT not connected, skipping subscribe");
+        subscribed.store(false);  // 确保下次可以重试
+        return;
+    }
+
+    if (subscribed.load()) {
+        LOG_DEBUG("[TASK] Already subscribed, skipping");
+        return;
+    }
 
     LOG_INFO("[TASK] subscribe MQTT topic: %s", mqtt_topic_sub_task.c_str());
-    mqtt_manager.subscribe(mqtt_topic_sub_task, 0);
+    bool success = mqtt_manager.subscribe(mqtt_topic_sub_task, 0);
+    if (success) {
+        subscribed.store(true);
+        LOG_INFO("[TASK] Subscribe successful");
+    } else {
+        LOG_ERROR("[TASK] Subscribe failed, will retry later");
+        subscribed.store(false);  // 订阅失败，允许重试
+    }
 }
 
 // 周期性上报任务状态到MQTT（200ms间隔持续上报）
@@ -420,7 +442,10 @@ class TaskManagerNode : public rclcpp::Node
                 vid = msg->vid;
                 identity_ready.store(!vid.empty());
 
-                if (!identity_ready.load()) return;
+                if (!identity_ready.load()) {
+                    LOG_WARN("[TASK] Invalid VID received: %s", msg->vid.c_str());
+                    return;
+                }
 
                 // 拼 topic
                 mqtt_topic_sub_task = config.mqtt_topic_sub_task_tmpl;
@@ -435,6 +460,8 @@ class TaskManagerNode : public rclcpp::Node
                 LOG_INFO("[TASK] identity ready VID=%s => sub=%s pub=%s", vid.c_str(), mqtt_topic_sub_task.c_str(),
                          mqtt_topic_push_status.c_str());
 
+                // 重置订阅状态，确保可以重新尝试订阅
+                subscribed.store(false);
                 try_subscribe_task_topic();
             });
     }
@@ -521,6 +548,7 @@ int main(int argc, char** argv)
         {
             LOG_INFO("[TASK] MQTT reconnected: %s", cause);
             subscribed.store(false);
+            // 尝试重新订阅任务话题
             try_subscribe_task_topic();
         });
 
@@ -539,9 +567,28 @@ int main(int argc, char** argv)
     rclcpp::executors::SingleThreadedExecutor executor;
     executor.add_node(node);
 
+    // 用于定期检查订阅状态的定时器
+    auto last_check_time = std::chrono::steady_clock::now();
+    const std::chrono::seconds SUBSCRIBE_CHECK_INTERVAL = std::chrono::seconds(5);
+
     while (rclcpp::ok() && !signal_received)
     {
         executor.spin_some();
+
+        // 定期检查并尝试订阅任务话题
+        auto now = std::chrono::steady_clock::now();
+        if (now - last_check_time >= SUBSCRIBE_CHECK_INTERVAL)
+        {
+            last_check_time = now;
+
+            // 如果已经准备好身份但尚未成功订阅，则尝试订阅
+            if (identity_ready.load() && !subscribed.load())
+            {
+                LOG_INFO("[TASK] Periodic check: identity ready but not subscribed, attempting subscribe");
+                try_subscribe_task_topic();
+            }
+        }
+
         std::this_thread::sleep_for(std::chrono::milliseconds(100));
     }