diff --git a/ruoyi-api/property-api/src/main/java/org/dromara/property/api/RemoteFloorService.java b/ruoyi-api/property-api/src/main/java/org/dromara/property/api/RemoteFloorService.java
index 6b735d2..9e9d707 100644
--- a/ruoyi-api/property-api/src/main/java/org/dromara/property/api/RemoteFloorService.java
+++ b/ruoyi-api/property-api/src/main/java/org/dromara/property/api/RemoteFloorService.java
@@ -20,5 +20,11 @@ public interface RemoteFloorService {
      */
     List<TreeNode<Long>> queryTreeList();
 
-
+    /**
+     * 根据单元ID查询楼层
+     *
+     * @param unitId 单元ID
+     * @return 楼层
+     */
+    List<RemoteFloorVo> queryByUnitId(Long unitId);
 }
diff --git a/ruoyi-modules/Property/src/main/java/org/dromara/property/dubbo/RemoteFloorServiceImpl.java b/ruoyi-modules/Property/src/main/java/org/dromara/property/dubbo/RemoteFloorServiceImpl.java
index b78d6e8..1d9c0d3 100644
--- a/ruoyi-modules/Property/src/main/java/org/dromara/property/dubbo/RemoteFloorServiceImpl.java
+++ b/ruoyi-modules/Property/src/main/java/org/dromara/property/dubbo/RemoteFloorServiceImpl.java
@@ -101,4 +101,16 @@ public class RemoteFloorServiceImpl implements RemoteFloorService {
         treeList.addAll(l4);
         return treeList;
     }
+
+    /**
+     * 根据单元ID查询楼层
+     *
+     * @param unitId 单元ID
+     * @return 楼层
+     */
+    @Override
+    public List<RemoteFloorVo> queryByUnitId(Long unitId){
+        List<TbFloorVo> tbFloorVo = floorService.queryByUnitId(unitId);
+        return MapstructUtils.convert(tbFloorVo, RemoteFloorVo.class);
+    }
 }
diff --git a/ruoyi-modules/Property/src/main/java/org/dromara/property/service/ITbFloorService.java b/ruoyi-modules/Property/src/main/java/org/dromara/property/service/ITbFloorService.java
index 6849e8b..9156cc5 100644
--- a/ruoyi-modules/Property/src/main/java/org/dromara/property/service/ITbFloorService.java
+++ b/ruoyi-modules/Property/src/main/java/org/dromara/property/service/ITbFloorService.java
@@ -1,5 +1,6 @@
 package org.dromara.property.service;
 
+import org.dromara.property.api.domain.vo.RemoteFloorVo;
 import org.dromara.property.domain.TbFloor;
 import org.dromara.property.domain.vo.TbFloorVo;
 import org.dromara.property.domain.bo.TbFloorBo;
@@ -67,7 +68,18 @@ public interface ITbFloorService {
      */
     Boolean deleteWithValidByIds(Collection<Long> ids, Boolean isValid);
 
-
+    /**
+     * 查询所有楼层
+     *
+     * @return 楼层列表
+     */
     List<TbFloorVo> queryAll();
 
+    /**
+     * 根据单元ID查询楼层
+     *
+     * @param unitId 单元ID
+     * @return 楼层
+     */
+    List<TbFloorVo> queryByUnitId(Long unitId);
 }
diff --git a/ruoyi-modules/Property/src/main/java/org/dromara/property/service/impl/TbFloorServiceImpl.java b/ruoyi-modules/Property/src/main/java/org/dromara/property/service/impl/TbFloorServiceImpl.java
index 29e9a4a..28630af 100644
--- a/ruoyi-modules/Property/src/main/java/org/dromara/property/service/impl/TbFloorServiceImpl.java
+++ b/ruoyi-modules/Property/src/main/java/org/dromara/property/service/impl/TbFloorServiceImpl.java
@@ -18,6 +18,7 @@ import org.dromara.property.mapper.TbFloorMapper;
 import org.dromara.property.service.ITbFloorService;
 import org.dromara.property.service.ITbUnitService;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.Collection;
 import java.util.List;
@@ -94,18 +95,25 @@ public class TbFloorServiceImpl implements ITbFloorService {
      * @return 是否新增成功
      */
     @Override
+    @Transactional(rollbackFor = Exception.class)
     public Boolean insertByBo(TbFloorBo bo) {
         // 验证单元是否存在
         TbUnitVo tbUnitVo = tbUnitService.queryById(bo.getUnitId());
         Assert.notNull(tbUnitVo, "单元:{},不存在。", bo.getUnitId());
+
+        // 验证同一单元楼层是否已经存在
+        LambdaQueryWrapper<TbFloor> lqw = Wrappers.lambdaQuery();
+        lqw.eq(TbFloor::getUnitId, bo.getUnitId())
+            .eq(TbFloor::getFloorNumber, bo.getFloorNumber());
+        boolean numberExists = baseMapper.selectCount(lqw) > 0;
+        Assert.isFalse(numberExists, "单元:{},楼层:{}已存在。", bo.getUnitId(), bo.getFloorNumber());
+
         TbFloor add = MapstructUtils.convert(bo, TbFloor.class);
         add.setCommunityId(tbUnitVo.getCommunityId());
         add.setBuildingId(tbUnitVo.getBuildingId());
         validEntityBeforeSave(add);
         boolean flag = baseMapper.insert(add) > 0;
-        if (flag) {
-            bo.setId(add.getId());
-        }
+        Assert.isTrue(flag, "新增楼层失败");
         return flag;
     }
 
@@ -148,4 +156,17 @@ public class TbFloorServiceImpl implements ITbFloorService {
     public List<TbFloorVo> queryAll() {
         return baseMapper.selectVoList();
     }
+
+    /**
+     * 根据单元ID查询楼层
+     *
+     * @param unitId 单元ID
+     * @return 楼层
+     */
+    @Override
+    public List<TbFloorVo> queryByUnitId(Long unitId){
+        LambdaQueryWrapper<TbFloor> lqw = Wrappers.lambdaQuery();
+        lqw.eq(TbFloor::getUnitId, unitId);
+        return baseMapper.selectVoList(lqw);
+    }
 }