diff --git a/yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/dal/tdengine/IotDevicePropertyMapper.java b/yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/dal/tdengine/IotDevicePropertyMapper.java
index 8ca8bcecbb..f2d6af97e9 100644
--- a/yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/dal/tdengine/IotDevicePropertyMapper.java
+++ b/yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/dal/tdengine/IotDevicePropertyMapper.java
@@ -33,7 +33,7 @@ public interface IotDevicePropertyMapper {
                                             List<TDengineTableField> oldFields,
                                             List<TDengineTableField> newFields) {
         oldFields.removeIf(field -> StrUtil.equalsAny(field.getField(),
-                TDengineTableField.FIELD_TS, "device_key", "report_time"));
+                TDengineTableField.FIELD_TS, "report_time"));
         List<TDengineTableField> addFields = newFields.stream().filter( // 新增的字段
                         newField -> oldFields.stream().noneMatch(oldField -> oldField.getField().equals(newField.getField())))
                 .collect(Collectors.toList());
diff --git a/yudao-module-iot/yudao-module-iot-biz/src/main/resources/mapper/device/IotDevicePropertyMapper.xml b/yudao-module-iot/yudao-module-iot-biz/src/main/resources/mapper/device/IotDevicePropertyMapper.xml
index 7a3c3eb6f8..bdc40e8330 100644
--- a/yudao-module-iot/yudao-module-iot-biz/src/main/resources/mapper/device/IotDevicePropertyMapper.xml
+++ b/yudao-module-iot/yudao-module-iot-biz/src/main/resources/mapper/device/IotDevicePropertyMapper.xml
@@ -51,7 +51,7 @@
         TAGS ('${device.deviceKey}')
         (ts, report_time,
         <foreach item="key" collection="properties.keys" separator=",">
-            ${key}
+            ${@cn.hutool.core.util.StrUtil@toUnderlineCase(key)}
         </foreach>
         )
         VALUES
@@ -67,9 +67,9 @@
     </select>
 
     <select id="selectPageByHistory" resultType="cn.iocoder.yudao.module.iot.controller.admin.device.vo.data.IotDevicePropertyRespVO">
-        SELECT ${reqVO.identifier} AS `value`, ts AS update_time
-        FROM device_property_${reqVO.deviceKey}1
-        WHERE ${reqVO.identifier} IS NOT NULL
+        SELECT ${@cn.hutool.core.util.StrUtil@toUnderlineCase(reqVO.identifier)} AS `value`, ts AS update_time
+        FROM device_property_${reqVO.deviceKey}
+        WHERE ${@cn.hutool.core.util.StrUtil@toUnderlineCase(reqVO.identifier)} IS NOT NULL
           AND ts BETWEEN ${@cn.hutool.core.date.LocalDateTimeUtil@toEpochMilli(reqVO.times[0])}
               AND ${@cn.hutool.core.date.LocalDateTimeUtil@toEpochMilli(reqVO.times[1])}
         ORDER BY ts DESC