diff --git a/epmet-commons/epmet-commons-tools/src/main/java/com/epmet/commons/tools/exception/EpmetErrorCode.java b/epmet-commons/epmet-commons-tools/src/main/java/com/epmet/commons/tools/exception/EpmetErrorCode.java
index ed274b2c28..6a66e1ae71 100644
--- a/epmet-commons/epmet-commons-tools/src/main/java/com/epmet/commons/tools/exception/EpmetErrorCode.java
+++ b/epmet-commons/epmet-commons-tools/src/main/java/com/epmet/commons/tools/exception/EpmetErrorCode.java
@@ -256,6 +256,7 @@ public enum EpmetErrorCode {
 	RESI_IC_NAT(8925,"已存在记录，请联系社区工作人员修改"),
 	IC_MOVE_IN(8926,"居民信息中房屋信息与当前选择房屋不一致，是否更新？"),
 	NOT_REGEIST_RESI(8927,"未注册居民"),
+	UNIT_EXIST_HOUSES_ERROR(8928,"单元下存在房屋，不可修改单元数"),
 
 
 	//通用错误码 start
diff --git a/epmet-module/gov-org/gov-org-client/src/main/java/com/epmet/dto/form/IcHouseListFormDTO.java b/epmet-module/gov-org/gov-org-client/src/main/java/com/epmet/dto/form/IcHouseListFormDTO.java
index cec2d19994..8697f4b375 100644
--- a/epmet-module/gov-org/gov-org-client/src/main/java/com/epmet/dto/form/IcHouseListFormDTO.java
+++ b/epmet-module/gov-org/gov-org-client/src/main/java/com/epmet/dto/form/IcHouseListFormDTO.java
@@ -79,4 +79,14 @@ public class IcHouseListFormDTO extends PageFormDTO {
      * 备注
      */
     private String remark;
+
+    /**
+     * 开始日期 eg：20220505
+     */
+    private String updateStartDate;
+
+    /**
+     * 结束日期 eg：20220505
+     */
+    private String updateEndDate;
 }
diff --git a/epmet-module/gov-org/gov-org-client/src/main/java/com/epmet/dto/result/IcHouseListResultDTO.java b/epmet-module/gov-org/gov-org-client/src/main/java/com/epmet/dto/result/IcHouseListResultDTO.java
index 4c1b40288f..069318849c 100644
--- a/epmet-module/gov-org/gov-org-client/src/main/java/com/epmet/dto/result/IcHouseListResultDTO.java
+++ b/epmet-module/gov-org/gov-org-client/src/main/java/com/epmet/dto/result/IcHouseListResultDTO.java
@@ -79,7 +79,8 @@ public class IcHouseListResultDTO implements Serializable {
      */
     private String ownerIdCard;
 
-    private Double sort;
+    private String remark;
 
+    private Double sort;
 
 }
diff --git a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/constant/ImportErrorMsgConstants.java b/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/constant/ImportErrorMsgConstants.java
index 0156f0e042..85f0d846f7 100644
--- a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/constant/ImportErrorMsgConstants.java
+++ b/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/constant/ImportErrorMsgConstants.java
@@ -9,6 +9,7 @@ public interface ImportErrorMsgConstants {
 
     String EXIST_ERROR = "数据已存在";
     String UNIT_ERROR = "暂不支持单元数减小";
+    String UNIT_EXIST_HOUSES_ERROR = "单元下存在房屋，不可修改单元数";
 
     String DOCUMENT_EXIST_ERROR = "文件中存在重复数据";
 
diff --git a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/dao/IcBuildingUnitDao.java b/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/dao/IcBuildingUnitDao.java
index 69465df911..147f25f7d2 100644
--- a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/dao/IcBuildingUnitDao.java
+++ b/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/dao/IcBuildingUnitDao.java
@@ -20,6 +20,9 @@ package com.epmet.dao;
 import com.epmet.commons.mybatis.dao.BaseDao;
 import com.epmet.entity.IcBuildingUnitEntity;
 import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+
+import java.util.List;
 
 /**
  * 楼栋单元信息
@@ -29,5 +32,22 @@ import org.apache.ibatis.annotations.Mapper;
  */
 @Mapper
 public interface IcBuildingUnitDao extends BaseDao<IcBuildingUnitEntity> {
-	
+
+    /**
+     * Desc: 根据楼栋ID获取单元IDs
+     * @param buildingId
+     * @param size
+     * @author zxc
+     * @date 2022/5/31 15:46
+     */
+    List<String> getUnitIdByBuildingId(@Param("buildingId")String buildingId,@Param("size")Integer size);
+
+    /**
+     * Desc: 删除单元
+     * @param ids
+     * @author zxc
+     * @date 2022/5/31 16:04
+     */
+    void delUnit(@Param("ids")List<String> ids);
+
 }
\ No newline at end of file
diff --git a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/dao/IcHouseDao.java b/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/dao/IcHouseDao.java
index e1cb4de562..d428631ad5 100644
--- a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/dao/IcHouseDao.java
+++ b/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/dao/IcHouseDao.java
@@ -102,4 +102,12 @@ public interface IcHouseDao extends BaseDao<IcHouseEntity> {
      */
     HouseAgencyInfoResultDTO getHouseAgencyInfo(@Param("houseId") String houseId);
 
+    /**
+     * Desc: 获取单元下的房屋数
+     * @param unitIds
+     * @author zxc
+     * @date 2022/5/31 15:53
+     */
+    Integer getHouseCountByUnitIds(@Param("unitIds")List<String> unitIds);
+
 }
diff --git a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/model/ImportBuildingInfoListener.java b/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/model/ImportBuildingInfoListener.java
index 94de07dbbc..e567bf017d 100644
--- a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/model/ImportBuildingInfoListener.java
+++ b/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/model/ImportBuildingInfoListener.java
@@ -188,7 +188,7 @@ public class ImportBuildingInfoListener extends AnalysisEventListener<BuildingIn
                     if (!e.getAddStatus()){
                         nums.add(e.getNum());
                         BuildingInfoModel buildingInfoModel = ConvertUtils.sourceToTarget(e, BuildingInfoModel.class);
-                        disposeErrorMsg(buildingInfoModel,ImportErrorMsgConstants.UNIT_ERROR);
+                        disposeErrorMsg(buildingInfoModel,ImportErrorMsgConstants.UNIT_EXIST_HOUSES_ERROR);
                         e.setAddStatus(true);
                     }
                 });
diff --git a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/service/impl/BuildingServiceImpl.java b/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/service/impl/BuildingServiceImpl.java
index ceab6ed43d..c1863e5cd0 100644
--- a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/service/impl/BuildingServiceImpl.java
+++ b/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/service/impl/BuildingServiceImpl.java
@@ -454,7 +454,20 @@ public class BuildingServiceImpl implements BuildingService {
         Integer unit = icBuilding.getTotalUnitNum();
         if (nowUnit < unit) {
             //如果小于，判断是否存在房屋，如果存在就提示不能更改
-            throw new EpmetException(EpmetErrorCode.ORG_EDIT_FAILED.getCode(), EpmetErrorCode.ORG_EDIT_FAILED.getMsg(), "暂不支持单元号减小");
+            /**
+             * 校验规则，单元号倒序，校验（原来的单元数 - 现在单元数）个单元下是不是存在房屋，存在房屋不能更新
+             * 2022-05-31修改逻辑，可以修改变小，先去校验,单元下存在房屋就报错，不存在，删除对应单元，更新楼栋单元数
+             */
+            Integer size = unit - nowUnit;
+            List<String> ids = icBuildingUnitDao.getUnitIdByBuildingId(formDTO.getBuildingId(), size);
+            if (!CollectionUtils.isEmpty(ids)){
+                Integer houseCount = icHouseDao.getHouseCountByUnitIds(ids);
+                if (houseCount.compareTo(NumConstant.ZERO) != NumConstant.ZERO){
+                    throw new EpmetException(EpmetErrorCode.UNIT_EXIST_HOUSES_ERROR.getCode());
+                }
+                icBuildingUnitDao.delUnit(ids);
+            }
+//            throw new EpmetException(EpmetErrorCode.ORG_EDIT_FAILED.getCode(), EpmetErrorCode.ORG_EDIT_FAILED.getMsg(), "暂不支持单元号减小");
         } else {
             //新增单元
             List<OptionResultDTO> units = icBuildingUnitService.getUnitOptions(icBuilding.getId());
diff --git a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/service/impl/IcNeighborHoodServiceImpl.java b/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/service/impl/IcNeighborHoodServiceImpl.java
index ee0d37afef..c54ea3a436 100644
--- a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/service/impl/IcNeighborHoodServiceImpl.java
+++ b/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/service/impl/IcNeighborHoodServiceImpl.java
@@ -44,10 +44,7 @@ import com.epmet.commons.tools.utils.ConvertUtils;
 import com.epmet.commons.tools.utils.Result;
 import com.epmet.constant.CustomerGridConstant;
 import com.epmet.constants.ImportTaskConstants;
-import com.epmet.dao.CustomerGridDao;
-import com.epmet.dao.IcBuildingDao;
-import com.epmet.dao.IcNeighborHoodDao;
-import com.epmet.dao.IcPropertyManagementDao;
+import com.epmet.dao.*;
 import com.epmet.dto.*;
 import com.epmet.dto.form.IcNeighborHoodAddFormDTO;
 import com.epmet.dto.form.ImportInfoFormDTO;
@@ -121,6 +118,10 @@ public class IcNeighborHoodServiceImpl extends BaseServiceImpl<IcNeighborHoodDao
     private OssFeignClient ossFeignClient;
     @Autowired
     private ExecutorService executorService;
+    @Autowired
+    private IcBuildingUnitDao icBuildingUnitDao;
+    @Autowired
+    private IcHouseDao icHouseDao;
 
     @Override
     public PageData<IcNeighborHoodDTO> page(Map<String, Object> params) {
@@ -598,7 +599,23 @@ public class IcNeighborHoodServiceImpl extends BaseServiceImpl<IcNeighborHoodDao
             info.setBuildingExistStatus(true);
             if (info.getBuildingUpdateStatus()){
                 if (info.getTotalUnitNum() < building.getTotalUnitNum()){
-                    info.setBuildingUnitNumStatus(true);
+                    /**
+                     * 需求变动
+                     * 单元数可以修改变小，先去校验,单元下存在房屋就报错，不存在，删除对应单元，更新楼栋单元数
+                     * 校验规则，单元号倒序，校验（原来的单元数 - 现在单元数）个单元下是不是存在房屋，存在房屋不能更新
+                     */
+                    info.setBuildingId(building.getId());
+                    Integer size = building.getTotalUnitNum() - info.getTotalUnitNum();
+                    List<String> ids = icBuildingUnitDao.getUnitIdByBuildingId(building.getId(), size);
+                    if (!org.springframework.util.CollectionUtils.isEmpty(ids)){
+                        Integer houseCount = icHouseDao.getHouseCountByUnitIds(ids);
+                        if (houseCount.compareTo(NumConstant.ZERO) != NumConstant.ZERO){
+                            info.setBuildingUnitNumStatus(true);
+                        }else {
+                            icBuildingUnitDao.delUnit(ids);
+                            icBuildingService.updateBuilding(info);
+                        }
+                    }
                 }else {
                     info.setBuildingId(building.getId());
                     icBuildingService.updateBuilding(info);
diff --git a/epmet-module/gov-org/gov-org-server/src/main/resources/mapper/IcBuildingDao.xml b/epmet-module/gov-org/gov-org-server/src/main/resources/mapper/IcBuildingDao.xml
index 7e0d3bde18..92c486f24a 100644
--- a/epmet-module/gov-org/gov-org-server/src/main/resources/mapper/IcBuildingDao.xml
+++ b/epmet-module/gov-org/gov-org-server/src/main/resources/mapper/IcBuildingDao.xml
@@ -48,10 +48,18 @@
         SET TOTAL_UNIT_NUM = #{totalUnitNum},
             TOTAL_FLOOR_NUM = #{totalFloorNum},
             TOTAL_HOUSE_NUM = #{totalHouseNum},
-            BUILDING_LEADER_NAME = #{buildingLeaderName},
-            BUILDING_LEADER_MOBILE = #{buildingLeaderMobile},
-            SORT = #{sort},
-            TYPE = #{type},
+            <if test="buildingLeaderName != null and buildingLeaderName != '' ">
+                BUILDING_LEADER_NAME = #{buildingLeaderName},
+            </if>
+            <if test="buildingLeaderMobile != null and buildingLeaderMobile != '' ">
+                BUILDING_LEADER_MOBILE = #{buildingLeaderMobile},
+            </if>
+            <if test="sort != null">
+                SORT = #{sort},
+            </if>
+            <if test="type != null and type != ''">
+                TYPE = #{type},
+            </if>
             UPDATED_TIME = NOW()
         WHERE ID = #{buildingId}
     </update>
diff --git a/epmet-module/gov-org/gov-org-server/src/main/resources/mapper/IcBuildingUnitDao.xml b/epmet-module/gov-org/gov-org-server/src/main/resources/mapper/IcBuildingUnitDao.xml
index 0ee38da368..09f334b42d 100644
--- a/epmet-module/gov-org/gov-org-server/src/main/resources/mapper/IcBuildingUnitDao.xml
+++ b/epmet-module/gov-org/gov-org-server/src/main/resources/mapper/IcBuildingUnitDao.xml
@@ -3,19 +3,20 @@
 
 <mapper namespace="com.epmet.dao.IcBuildingUnitDao">
 
-    <resultMap type="com.epmet.entity.IcBuildingUnitEntity" id="icBuildingUnitMap">
-        <result property="id" column="ID"/>
-        <result property="customerId" column="CUSTOMER_ID"/>
-        <result property="buildingId" column="BUILDING_ID"/>
-        <result property="unitNum" column="UNIT_NUM"/>
-        <result property="unitName" column="UNIT_NAME"/>
-        <result property="delFlag" column="DEL_FLAG"/>
-        <result property="revision" column="REVISION"/>
-        <result property="createdBy" column="CREATED_BY"/>
-        <result property="createdTime" column="CREATED_TIME"/>
-        <result property="updatedBy" column="UPDATED_BY"/>
-        <result property="updatedTime" column="UPDATED_TIME"/>
-    </resultMap>
+    <!-- 删除单元 -->
+    <update id="delUnit">
+        UPDATE ic_building_unit
+        SET DEL_FLAG = '1',
+            UPDATED_TIME = NOW()
+        WHERE ID IN (
+            <foreach collection="ids" item="id" separator=",">#{id}</foreach>
+            )
+    </update>
+
+    <!-- 根据楼栋ID获取单元IDs -->
+    <select id="getUnitIdByBuildingId" resultType="java.lang.String">
+        SELECT ID FROM ic_building_unit WHERE DEL_FLAG = '0' AND BUILDING_ID = #{buildingId} ORDER BY UNIT_NUM+0 DESC LIMIT #{size}
+    </select>
 
 
 </mapper>
\ No newline at end of file
diff --git a/epmet-module/gov-org/gov-org-server/src/main/resources/mapper/IcHouseDao.xml b/epmet-module/gov-org/gov-org-server/src/main/resources/mapper/IcHouseDao.xml
index 5fe411e6ee..e907804e12 100644
--- a/epmet-module/gov-org/gov-org-server/src/main/resources/mapper/IcHouseDao.xml
+++ b/epmet-module/gov-org/gov-org-server/src/main/resources/mapper/IcHouseDao.xml
@@ -112,7 +112,8 @@
         ag.ORGANIZATION_NAME agencyName,
         c.GRID_ID as gridId,
         gr.GRID_NAME,
-        IFNULL(a.sort,0) as sort
+        IFNULL(a.sort,0) as sort,
+        IFNULL(a.REMARK,'') AS remark
         from ic_house a
         LEFT JOIN ic_building b on a.BUILDING_ID = b.ID and b.DEL_FLAG = '0'
         LEFT JOIN ic_neighbor_hood c on a.NEIGHBOR_HOOD_ID = c.ID and c.DEL_FLAG = '0'
@@ -121,6 +122,7 @@
         LEFT JOIN customer_agency ag on ag.ID = c.AGENCY_ID and d.DEL_FLAG = '0'
         <where>
              1 = 1
+            and a.del_flag = '0'
             <if test="pids != null and pids != ''">
             and case c.AGENCY_PIDS when '' then CONCAT(c.AGENCY_ID) like CONCAT(#{pids}, '%')
                     else CONCAT(c.AGENCY_PIDS, ':', c.AGENCY_ID) like CONCAT(#{pids}, '%') end
@@ -170,7 +172,16 @@
             <if test="remark != null and remark.trim() != ''">
                 AND a.REMARK like CONCAT('%',#{remark},'%')
             </if>
-           and a.del_flag = '0'
+            <if test="null != updateStartDate and updateStartDate != '' and null != updateEndDate and updateEndDate != ''">
+                AND ((DATE_FORMAT(a.CREATED_TIME,'%Y%m%d') >= #{updateStartDate} AND DATE_FORMAT(a.CREATED_TIME,'%Y%m%d') <![CDATA[<=]]> #{updateEndDate})
+                OR (DATE_FORMAT(a.UPDATED_TIME,'%Y%m%d') >= #{updateStartDate} AND DATE_FORMAT(a.UPDATED_TIME,'%Y%m%d') <![CDATA[<=]]> #{updateEndDate}))
+            </if>
+            <if test="null != updateEndDate and updateEndDate != '' and (updateStartDate == null or updateStartDate == '') ">
+                AND (DATE_FORMAT(a.CREATED_TIME,'%Y%m%d') <![CDATA[<=]]> #{updateEndDate}) OR ((DATE_FORMAT(a.UPDATED_TIME,'%Y%m%d')) <![CDATA[<=]]> #{updateEndDate})
+            </if>
+            <if test="null != updateStartDate and updateStartDate != '' and (updateEndDate == null or updateEndDate == '') ">
+                AND (DATE_FORMAT(a.CREATED_TIME,'%Y%m%d') <![CDATA[>=]]> #{updateStartDate}) OR ((DATE_FORMAT(a.UPDATED_TIME,'%Y%m%d')) <![CDATA[>=]]> #{updateStartDate})
+            </if>
         </where>
        #排序规则：根据小区、楼栋、单元、门牌号(分别按照数字和中文)分别升序排序
         ORDER BY
@@ -374,4 +385,11 @@
         WHERE h.ID = #{houseId}
     </select>
 
+    <!-- 获取单元下的房屋数 -->
+    <select id="getHouseCountByUnitIds" resultType="java.lang.Integer">
+        SELECT COUNT(ID) FROM ic_house WHERE DEL_FLAG = '0' AND BUILDING_UNIT_ID IN (
+            <foreach collection="unitIds" item="id" separator=",">#{id}</foreach>
+            )
+    </select>
+
 </mapper>