diff --git a/src/main/java/com/gunshi/project/xyt/timetask/DataTask.java b/src/main/java/com/gunshi/project/xyt/timetask/DataTask.java
index 09ea1b7..b37ee8d 100644
--- a/src/main/java/com/gunshi/project/xyt/timetask/DataTask.java
+++ b/src/main/java/com/gunshi/project/xyt/timetask/DataTask.java
@@ -314,7 +314,7 @@ public class DataTask {
                                     UpdateWrapper<StPptnRH> updateWrapper = new UpdateWrapper<>();
                                     updateWrapper.eq("stcd", LastData.getStcd()).eq("tm", LastData.getTm());
                                     LastData.setDrp(LastData.getDrp());
-                                    LastData.setChtm(LastData.getChtm());
+                                    LastData.setChtm(maxData.getChtm());
                                     stPptnRHService.saveOrUpdate(LastData, updateWrapper);
                                 }
                                 if(list.size() > 0){
diff --git a/src/main/resources/mapper/StPptnRHMapper.xml b/src/main/resources/mapper/StPptnRHMapper.xml
index 95c9eed..d984958 100644
--- a/src/main/resources/mapper/StPptnRHMapper.xml
+++ b/src/main/resources/mapper/StPptnRHMapper.xml
@@ -38,7 +38,7 @@
     </select>
 
     <select id="getMaxData" resultType="com.gunshi.project.xyt.model.StPptnRH">
-        SELECT #{stcd} stcd, COALESCE(max(tm), '2021-01-01 00:00:00') tm FROM st_pptn_r_h
+        SELECT #{stcd} stcd, COALESCE(max(tm), '2021-01-01 00:00:00') tm, MAX ( chtm ) chtm FROM st_pptn_r_h
     </select>
 
     <select id="queryDayRz" resultType="com.gunshi.project.xyt.model.StPptnRD">