diff --git a/epmet-user/epmet-user-server/src/main/java/com/epmet/controller/IcNatController.java b/epmet-user/epmet-user-server/src/main/java/com/epmet/controller/IcNatController.java
index 2ea3ea881b..0852c02801 100644
--- a/epmet-user/epmet-user-server/src/main/java/com/epmet/controller/IcNatController.java
+++ b/epmet-user/epmet-user-server/src/main/java/com/epmet/controller/IcNatController.java
@@ -45,6 +45,7 @@ import java.io.InputStream;
 import java.net.URLEncoder;
 import java.nio.file.Path;
 import java.util.List;
+import java.util.Map;
 import java.util.UUID;
 
 
@@ -329,4 +330,24 @@ public class IcNatController implements ResultDataResolver {
         return new Result();
     }
 
+    /**
+     * 清楚核酸检测记录（只保留近n天）
+     * @author wxz
+     * @date 2022/11/28 下午5:36
+     * * @param map
+     * * @return Result
+     */
+    @PostMapping("clearNatRecords")
+    public Result clearNatRecords(@RequestBody Map<String, Object> map) {
+        // 保留天数
+        Integer retentionDays = (Integer) map.get("retentionDays");
+
+        // 如果是-1直接不做任何操作
+        if (-1 != retentionDays) {
+            icNucleinService.clearNatRecords(retentionDays);
+        }
+
+        return new Result();
+    }
+
 }
diff --git a/epmet-user/epmet-user-server/src/main/java/com/epmet/dao/IcNatDao.java b/epmet-user/epmet-user-server/src/main/java/com/epmet/dao/IcNatDao.java
index 7b8b0a0ab7..ba20fdcc8b 100644
--- a/epmet-user/epmet-user-server/src/main/java/com/epmet/dao/IcNatDao.java
+++ b/epmet-user/epmet-user-server/src/main/java/com/epmet/dao/IcNatDao.java
@@ -12,6 +12,7 @@ import com.epmet.entity.IcResiUserEntity;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
 
+import java.util.Date;
 import java.util.List;
 
 /**
@@ -86,4 +87,6 @@ public interface IcNatDao extends BaseDao<IcNatEntity> {
      * @Date 2022/10/25 11:13
      */
     void updateRelationOther();
+
+    void deleteNatRecordsBeforeRetentionDays(Date criticleTime);
 }
diff --git a/epmet-user/epmet-user-server/src/main/java/com/epmet/dao/IcNatRelationDao.java b/epmet-user/epmet-user-server/src/main/java/com/epmet/dao/IcNatRelationDao.java
index 0b37f87121..aa9395f9cc 100644
--- a/epmet-user/epmet-user-server/src/main/java/com/epmet/dao/IcNatRelationDao.java
+++ b/epmet-user/epmet-user-server/src/main/java/com/epmet/dao/IcNatRelationDao.java
@@ -5,6 +5,8 @@ import com.epmet.entity.IcNatRelationEntity;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
 
+import java.util.Date;
+
 /**
  * 核酸记录关系表
  *
@@ -19,4 +21,6 @@ public interface IcNatRelationDao extends BaseDao<IcNatRelationEntity> {
      * @Description 关系数据删除--物理删除
      **/
     int delRelation(@Param("icNatId") String icNatId, @Param("agencyId") String agencyId);
+
+    void deleteBeforeRetentionDays(Date criticleTime);
 }
\ No newline at end of file
diff --git a/epmet-user/epmet-user-server/src/main/java/com/epmet/service/IcNatService.java b/epmet-user/epmet-user-server/src/main/java/com/epmet/service/IcNatService.java
index b9f89d921e..72c0ab6a82 100644
--- a/epmet-user/epmet-user-server/src/main/java/com/epmet/service/IcNatService.java
+++ b/epmet-user/epmet-user-server/src/main/java/com/epmet/service/IcNatService.java
@@ -97,4 +97,12 @@ public interface IcNatService extends BaseService<IcNatEntity> {
 
     void initNatLocal();
 
+    /**
+     * 清理nat记录，目前不区分客户，后期需要区分可以再加
+     * @author wxz
+     * @date 2022/11/28 下午5:39
+     * * @param retentionDays 保留的天数(最近)
+     *
+     */
+    void clearNatRecords(Integer retentionDays);
 }
diff --git a/epmet-user/epmet-user-server/src/main/java/com/epmet/service/impl/IcNatServiceImpl.java b/epmet-user/epmet-user-server/src/main/java/com/epmet/service/impl/IcNatServiceImpl.java
index 78c935c4ca..cbcbaf427f 100644
--- a/epmet-user/epmet-user-server/src/main/java/com/epmet/service/impl/IcNatServiceImpl.java
+++ b/epmet-user/epmet-user-server/src/main/java/com/epmet/service/impl/IcNatServiceImpl.java
@@ -733,4 +733,15 @@ public class IcNatServiceImpl extends BaseServiceImpl<IcNatDao, IcNatEntity> imp
         icNatRelationDao.insert(relation);
     }
 
+    @Override
+    public void clearNatRecords(Integer retentionDays) {
+        Date criticleTime = DateUtils.addDateDays(new Date(), 0 - retentionDays);
+
+        // 1。删除nat核酸检测信息。NatTime建索引
+        baseDao.deleteNatRecordsBeforeRetentionDays(criticleTime);
+
+        // 2.删除关系信息
+        // 没有记录业务时间，只能暂且按照创建时间来了，大不了多些脏数据。createdTime建索引！
+        icNatRelationDao.deleteBeforeRetentionDays(criticleTime);
+    }
 }
diff --git a/epmet-user/epmet-user-server/src/main/resources/mapper/IcNatDao.xml b/epmet-user/epmet-user-server/src/main/resources/mapper/IcNatDao.xml
index 4a5872efd2..16d15f05a2 100644
--- a/epmet-user/epmet-user-server/src/main/resources/mapper/IcNatDao.xml
+++ b/epmet-user/epmet-user-server/src/main/resources/mapper/IcNatDao.xml
@@ -275,4 +275,8 @@
         UPDATED_TIME = NOW()
         where user_type != 'import'
     </update>
+
+    <delete id="deleteNatRecordsBeforeRetentionDays">
+        delete from ic_nat where SAMPLE_TIME <![CDATA[<]]> #{criticleTime}
+    </delete>
 </mapper>
diff --git a/epmet-user/epmet-user-server/src/main/resources/mapper/IcNatRelationDao.xml b/epmet-user/epmet-user-server/src/main/resources/mapper/IcNatRelationDao.xml
index 1857d13df7..bae7f15b27 100644
--- a/epmet-user/epmet-user-server/src/main/resources/mapper/IcNatRelationDao.xml
+++ b/epmet-user/epmet-user-server/src/main/resources/mapper/IcNatRelationDao.xml
@@ -13,4 +13,8 @@
         </if>
     </delete>
 
+    <delete id="deleteBeforeRetentionDays">
+        delete from ic_nat_relation where CREATED_TIME <![CDATA[<]]> #{criticleTime}
+    </delete>
+
 </mapper>
\ No newline at end of file