diff --git a/api/middleware/mqtt/mqttDispatcher.js b/api/middleware/mqtt/mqttDispatcher.js
index a85428e..0c93229 100644
--- a/api/middleware/mqtt/mqttDispatcher.js
+++ b/api/middleware/mqtt/mqttDispatcher.js
@@ -1,4 +1,5 @@
 const db = require('../dbProxy.js');
+const logProxy = require('../logProxy.js');
 const deviceManager = require('../schedule/deviceManager.js');
 
 /**
@@ -268,6 +269,11 @@ class MqttDispatcher {
                 await device_status.update(updateData, { where: { sn_code } });
                 console.log(`[MQTT心跳] 设备 ${sn_code} 状态已更新 - 在线: true, 登录: ${updateData.isLoggedIn}`);
             } 
+            else
+            {
+                logProxy.error('[MQTT心跳] 设备 ${sn_code} 不存在', { sn_code });
+                return;
+            }
 
             // 记录心跳到设备管理器
             await deviceManager.recordHeartbeat(sn_code, heartbeatData);