diff --git a/src/main/java/com/casic/methane/frame/brs/MethaneDataFrameBRS.java b/src/main/java/com/casic/methane/frame/brs/MethaneDataFrameBRS.java
index 6e0b29c..ecdbca5 100644
--- a/src/main/java/com/casic/methane/frame/brs/MethaneDataFrameBRS.java
+++ b/src/main/java/com/casic/methane/frame/brs/MethaneDataFrameBRS.java
@@ -38,7 +38,6 @@
 
         obj.put("devType", getDevTypeName());
         obj.put("devCode", getDeviceCode());
-        obj.put("cell", "");
 
         JSONObject body = new JSONObject();
         body.put("bType", getDevTypeName() + "Data");
@@ -48,7 +47,7 @@
             dataArr.add(dataItem.toJSON());
 
             int cellVal = NumberUtil.toBigInteger(((MethaneDataItemBRS) dataItem).getBat()).intValue();
-            obj.put("cell", cellVal / 36); // 占3600mv的百分比
+            body.put("cell", cellVal / 36); // 占3600mv的百分比
         }
         body.put("datas", dataArr);