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 6ee29ef480..fc2d3662fe 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
@@ -73,7 +73,7 @@
         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 ASC
+        ORDER BY ts DESC
     </select>
 
 </mapper>
\ No newline at end of file