diff --git a/viewsh-module-iot/viewsh-module-iot-gateway/src/main/java/com/viewsh/module/iot/gateway/protocol/tcp/handler/Jt808ProtocolHandler.java b/viewsh-module-iot/viewsh-module-iot-gateway/src/main/java/com/viewsh/module/iot/gateway/protocol/tcp/handler/Jt808ProtocolHandler.java
index 2f905b4..8030985 100644
--- a/viewsh-module-iot/viewsh-module-iot-gateway/src/main/java/com/viewsh/module/iot/gateway/protocol/tcp/handler/Jt808ProtocolHandler.java
+++ b/viewsh-module-iot/viewsh-module-iot-gateway/src/main/java/com/viewsh/module/iot/gateway/protocol/tcp/handler/Jt808ProtocolHandler.java
@@ -114,8 +114,8 @@ public class Jt808ProtocolHandler extends AbstractProtocolHandler {
                                       String productKey, String deviceName, String serverId) {
         try {
             // 1. 标记消息为"协议层已应答"，业务层无需再发送 reply
-            // 设置 code = 0 后，isReplyMessage() 返回 true，业务层跳过 reply
-            message.setCode(0);
+            // 设置 skipReply = true 后，业务层跳过 reply
+            message.setSkipReply(true);
 
             // 2. 发送消息到消息总线
             deviceMessageService.sendDeviceMessage(message, productKey, deviceName, serverId);