diff --git a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/RecordSensorDataServiceImpl.java b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/RecordSensorDataServiceImpl.java
index 74cbfe5..a3d45da 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/RecordSensorDataServiceImpl.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/RecordSensorDataServiceImpl.java
@@ -22,7 +22,6 @@ public class RecordSensorDataServiceImpl implements IRecordSensorDataService {
 
     @Override
     public List<Map<String, Object>> selectSensorDataList(BaseSensorInfoDto baseSensorInfoDto) {
-    System.out.println("打印表名："+baseSensorInfoDto.getTableName());
         return recordSensorDataMapper.selectSensorDataList(baseSensorInfoDto);
     }
 }
diff --git a/ruoyi-system/src/main/resources/mapper/system/RecordSensorDataMapper.xml b/ruoyi-system/src/main/resources/mapper/system/RecordSensorDataMapper.xml
index 37b0c0c..94ad7a8 100644
--- a/ruoyi-system/src/main/resources/mapper/system/RecordSensorDataMapper.xml
+++ b/ruoyi-system/src/main/resources/mapper/system/RecordSensorDataMapper.xml
@@ -33,6 +33,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="params.beginCollectTime != null  and params.endCollectTime != null ">and collectTime between #{params.beginCollectTime} and #{params.endCollectTime}
             </if>
         </where>
+        order by collectTime desc
     </select>