diff --git a/app/src/main/java/com/xiaoqu/watch/service/manager/MqttConfig.kt b/app/src/main/java/com/xiaoqu/watch/service/manager/MqttConfig.kt
index 85f5332..4e2ded1 100644
--- a/app/src/main/java/com/xiaoqu/watch/service/manager/MqttConfig.kt
+++ b/app/src/main/java/com/xiaoqu/watch/service/manager/MqttConfig.kt
@@ -13,8 +13,8 @@ object MqttConfig {
     /** 认证密码 */
     const val PASSWORD = "xiaoquwatch"
 
-    /** 心跳间隔（秒）— 满足 ≥60s 功耗红线，低于 4G NAT 超时 */
-    const val KEEP_ALIVE_INTERVAL = 120
+    /** 心跳间隔（秒）— 满足 ≥60s 功耗红线，与旧版 mqtt.js 默认值一致，避免 4G NAT 超时断连 */
+    const val KEEP_ALIVE_INTERVAL = 60
 
     /** 连接超时（秒） */
     const val CONNECTION_TIMEOUT = 15