diff --git a/esua-epdc/epdc-module/epdc-heart/epdc-heart-server/src/main/java/com/elink/esua/epdc/modules/volunteer/dao/VolunteerRankDao.java b/esua-epdc/epdc-module/epdc-heart/epdc-heart-server/src/main/java/com/elink/esua/epdc/modules/volunteer/dao/VolunteerRankDao.java
index d56556bc..3631d159 100644
--- a/esua-epdc/epdc-module/epdc-heart/epdc-heart-server/src/main/java/com/elink/esua/epdc/modules/volunteer/dao/VolunteerRankDao.java
+++ b/esua-epdc/epdc-module/epdc-heart/epdc-heart-server/src/main/java/com/elink/esua/epdc/modules/volunteer/dao/VolunteerRankDao.java
@@ -38,4 +38,12 @@ public interface VolunteerRankDao extends BaseDao<VolunteerRankEntity> {
      * @return
      */
     List<EpdcVolunteerRankDTO> leaderboard();
+    /**
+     * @Description  清空排行榜数据
+     * @Author songyunpeng
+     * @Date  2020/5/13
+     * @Param []
+     * @return void
+     **/
+    void clearGenerateRankingList();
 }
\ No newline at end of file
diff --git a/esua-epdc/epdc-module/epdc-heart/epdc-heart-server/src/main/java/com/elink/esua/epdc/modules/volunteer/service/impl/VolunteerRankServiceImpl.java b/esua-epdc/epdc-module/epdc-heart/epdc-heart-server/src/main/java/com/elink/esua/epdc/modules/volunteer/service/impl/VolunteerRankServiceImpl.java
index 5b8434bd..70281c88 100644
--- a/esua-epdc/epdc-module/epdc-heart/epdc-heart-server/src/main/java/com/elink/esua/epdc/modules/volunteer/service/impl/VolunteerRankServiceImpl.java
+++ b/esua-epdc/epdc-module/epdc-heart/epdc-heart-server/src/main/java/com/elink/esua/epdc/modules/volunteer/service/impl/VolunteerRankServiceImpl.java
@@ -123,7 +123,9 @@ public class VolunteerRankServiceImpl extends BaseServiceImpl<VolunteerRankDao,
     @Override
     public Result generateRankingList(List<EpdcGetVolunteerRankDTO> list){
         if(list != null && list.size() > 0){
+            baseDao.clearGenerateRankingList();
             for(int i = 0 ; i < list.size(); i++ ){
+                //插入前先清空数据
                 EpdcGetVolunteerRankDTO epdcGetVolunteerRankDTO = list.get(i);
                 VolunteerRankEntity entity = ConvertUtils.sourceToTarget(epdcGetVolunteerRankDTO, VolunteerRankEntity.class);
                 insert(entity);
diff --git a/esua-epdc/epdc-module/epdc-heart/epdc-heart-server/src/main/resources/mapper/volunteer/VolunteerRankDao.xml b/esua-epdc/epdc-module/epdc-heart/epdc-heart-server/src/main/resources/mapper/volunteer/VolunteerRankDao.xml
index ad0ac000..01f12a45 100644
--- a/esua-epdc/epdc-module/epdc-heart/epdc-heart-server/src/main/resources/mapper/volunteer/VolunteerRankDao.xml
+++ b/esua-epdc/epdc-module/epdc-heart/epdc-heart-server/src/main/resources/mapper/volunteer/VolunteerRankDao.xml
@@ -29,6 +29,8 @@
         where GENERATE_DATE = DATE_FORMAT(NOW(),'%Y-%m-%d')
         order by sort
     </select>
-
+    <delete id="clearGenerateRankingList">
+        delete from epdc_volunteer_rank
+    </delete>
 
 </mapper>
\ No newline at end of file