diff --git a/bootstrap/src/main/java/com/iteaj/iboot/msn/iot/collect/CollectActionTask.java b/bootstrap/src/main/java/com/iteaj/iboot/msn/iot/collect/CollectActionTask.java
index 175c6415b002637a89c06699c0872a3920db10df..b5c5c68582f91617c1cff2f0bfad70745669aa18 100644
--- a/bootstrap/src/main/java/com/iteaj/iboot/msn/iot/collect/CollectActionTask.java
+++ b/bootstrap/src/main/java/com/iteaj/iboot/msn/iot/collect/CollectActionTask.java
@@ -39,7 +39,7 @@ public class CollectActionTask implements Runnable {
                                 .setCid(cid).setReason("")
                                 .setStatus(false).setCreateTime(date)
                                 .setUid(item.getUid()).setSignalId(signal.getId())
-                                .setCollectTaskId(taskDto.getId());
+                                .setCollectTaskId(taskDto.getId()).setChildSn(item.getChildSn());
 
                         try {
                             data.setAddress(signal.getAddress());
diff --git a/bootstrap/src/main/java/com/iteaj/iboot/msn/iot/entity/CollectData.java b/bootstrap/src/main/java/com/iteaj/iboot/msn/iot/entity/CollectData.java
index 0d0bdbb86b4fae4373d8db6ec9893f6fe27d4616..0da25949eb8adf14df804f9f6a082708e8fb254e 100644
--- a/bootstrap/src/main/java/com/iteaj/iboot/msn/iot/entity/CollectData.java
+++ b/bootstrap/src/main/java/com/iteaj/iboot/msn/iot/entity/CollectData.java
@@ -27,6 +27,12 @@ public class CollectData extends BaseEntity {
     @IotField
     private Long uid;
 
+    /**
+     * 子设备编号child_sn
+     */
+    @IotField("child_sn")
+    private String childSn;
+
     /**
      * 信号id
      */
diff --git a/docs/sql/iboot.sql b/docs/sql/iboot.sql
index 9362f493e7b420ad5840c2d75ef8a8e401c00a30..70ef938fe8e36dec0ae8ae80f6f9cfaa2ba9aed9 100644
--- a/docs/sql/iboot.sql
+++ b/docs/sql/iboot.sql
@@ -26,6 +26,7 @@ CREATE TABLE `iot_collect_data` (
   `id` bigint NOT NULL AUTO_INCREMENT,
   `cid` bigint NOT NULL COMMENT '任务执行标识',
   `uid` bigint DEFAULT NULL COMMENT '设备uid',
+  `child_sn` varchar(64) DEFAULT NULL COMMENT '子设备编号',
   `signal_id` bigint NOT NULL COMMENT '信号id',
   `field_type` tinyint DEFAULT NULL COMMENT '数据类型',
   `collect_task_id` bigint NOT NULL COMMENT '任务id',
diff --git a/docs/sql/msn/iboot_iot.sql b/docs/sql/msn/iboot_iot.sql
index 4bcb10025fe74b6c5643426420c1e336145d9c50..e2c33e04fe992c1a055ac4c3d06787a7dc302f12 100644
--- a/docs/sql/msn/iboot_iot.sql
+++ b/docs/sql/msn/iboot_iot.sql
@@ -26,6 +26,7 @@ CREATE TABLE `iot_collect_data` (
   `id` bigint NOT NULL AUTO_INCREMENT,
   `cid` bigint NOT NULL COMMENT '任务执行标识',
   `uid` bigint DEFAULT NULL COMMENT '设备uid',
+  `child_sn` varchar(64) DEFAULT NULL COMMENT '子设备编号',
   `signal_id` bigint NOT NULL COMMENT '信号id',
   `field_type` tinyint DEFAULT NULL COMMENT '数据类型',
   `collect_task_id` bigint NOT NULL COMMENT '任务id',