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 5380ad4..8cf6c91 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
@@ -383,12 +383,12 @@ public class Jt808ProtocolHandler extends AbstractProtocolHandler {
                     .build();
 
             // 构建响应消息
-            IotDeviceMessage responseMessage = IotDeviceMessage.replyOf(
+            // 注意：使用 requestOf 而不是 replyOf，因为 requestOf 将 params 放到 params 字段，
+            // replyOf 将 data 放到 data 字段，而 JT808 编码器需要从 params 获取参数
+            IotDeviceMessage responseMessage = IotDeviceMessage.requestOf(
                     requestId,
                     "jt808.platform.registerResp",
-                    params,
-                    replyCode == 0 ? 0 : 401,
-                    replyCode == 0 ? "注册成功" : "注册失败");
+                    params);
 
             // 编码并发送
             byte[] encodedData = deviceMessageService.encodeDeviceMessage(responseMessage, codecType);
@@ -433,12 +433,12 @@ public class Jt808ProtocolHandler extends AbstractProtocolHandler {
                     .build();
 
             // 构建响应消息
-            IotDeviceMessage responseMessage = IotDeviceMessage.replyOf(
+            // 注意：使用 requestOf 而不是 replyOf，因为 requestOf 将 params 放到 params 字段，
+            // replyOf 将 data 放到 data 字段，而 JT808 编码器需要从 params 获取参数
+            IotDeviceMessage responseMessage = IotDeviceMessage.requestOf(
                     requestId,
                     "jt808.platform.commonResp",
-                    params,
-                    replyCode == 0 ? 0 : 401,
-                    replyCode == 0 ? "成功" : "失败");
+                    params);
 
             // 编码并发送
             byte[] encodedData = deviceMessageService.encodeDeviceMessage(responseMessage, codecType);