diff --git a/docs/datacollect/README.md b/docs/datacollect/README.md
index 16e1b000..6b2be2a3 100644
--- a/docs/datacollect/README.md
+++ b/docs/datacollect/README.md
@@ -312,9 +312,13 @@ PS: 同一节点只允许建立一条连接。
     "deviceId": "112345123546",
     //设备属性编码
     "attrCode": "Ia",
+    //属性值
+    "attrValue": 0,
     //事件类型 ( 0-遥信变位 1-越上限 2-越下限)
     "eventType": 0, 
     //事件发生时刻
-    "eventTime": 12321351235123
+    "eventTime": 12321351235123,
+    //限值
+    "limitValue": null
 }
 ```