diff --git a/通讯协议-B200W-MQTT协议[外].md b/通讯协议-B200W-MQTT协议[外].md
index f192a4f..050865d 100644
--- a/通讯协议-B200W-MQTT协议[外].md
+++ b/通讯协议-B200W-MQTT协议[外].md
@@ -1180,6 +1180,7 @@ MQTT服务器配置结果检查
 |+version|string||是|键盘固件版本|
 |+model|int||是|键盘型号|
 |+voltage|double||是|键盘电量|
+|+keyTime|double||是|提交时间，从启动开始计时，单位秒|
 
 - **示例代码**
 
@@ -1191,7 +1192,8 @@ MQTT服务器配置结果检查
         "keySn":"1234567890",
         "version":"1.0.0",
         "model":67,
-        "voltage":2.8
+        "voltage":2.8,
+        "keyTime":0.5
     }
 }
 ```