diff --git a/src/main/java/cn/lihongjie/coal/department/controller/DepartmentController.java b/src/main/java/cn/lihongjie/coal/department/controller/DepartmentController.java
index d223ff56..79d8d755 100644
--- a/src/main/java/cn/lihongjie/coal/department/controller/DepartmentController.java
+++ b/src/main/java/cn/lihongjie/coal/department/controller/DepartmentController.java
@@ -6,6 +6,7 @@ import cn.lihongjie.coal.base.dto.CommonQuery;
 import cn.lihongjie.coal.base.dto.IdRequest;
 import cn.lihongjie.coal.department.dto.CreateDepartmentDto;
 import cn.lihongjie.coal.department.dto.DepartmentDto;
+import cn.lihongjie.coal.department.dto.DepartmentTreeDto;
 import cn.lihongjie.coal.department.dto.UpdateDepartmentDto;
 import cn.lihongjie.coal.department.service.DepartmentService;
 
@@ -16,6 +17,8 @@ import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+import java.util.List;
+
 @RequestMapping("/department")
 @RestController
 @SysLog(module = "部门管理")
@@ -52,4 +55,16 @@ public class DepartmentController {
     public DepartmentDto getById(@RequestBody IdRequest dto) {
         return this.service.getById(dto.getId());
     }
+
+
+    @PostMapping("/roots")
+    public List<DepartmentTreeDto> roots() {
+        return this.service.getRoots();
+    }
+
+    @PostMapping("/treeByIds")
+    public List<DepartmentTreeDto> roots(@RequestBody IdRequest request) {
+        return this.service.getTreeByIds(request);
+    }
+
 }
diff --git a/src/main/java/cn/lihongjie/coal/department/dto/CreateDepartmentDto.java b/src/main/java/cn/lihongjie/coal/department/dto/CreateDepartmentDto.java
index f99c37e6..8bec3ae1 100644
--- a/src/main/java/cn/lihongjie/coal/department/dto/CreateDepartmentDto.java
+++ b/src/main/java/cn/lihongjie/coal/department/dto/CreateDepartmentDto.java
@@ -5,4 +5,6 @@ import cn.lihongjie.coal.base.dto.OrgCommonDto;
 import lombok.Data;
 
 @Data
-public class CreateDepartmentDto extends OrgCommonDto {}
+public class CreateDepartmentDto extends OrgCommonDto {
+    private String parent;
+}
diff --git a/src/main/java/cn/lihongjie/coal/department/dto/DepartmentDto.java b/src/main/java/cn/lihongjie/coal/department/dto/DepartmentDto.java
index 82f7f4d6..9c1906af 100644
--- a/src/main/java/cn/lihongjie/coal/department/dto/DepartmentDto.java
+++ b/src/main/java/cn/lihongjie/coal/department/dto/DepartmentDto.java
@@ -5,4 +5,6 @@ import cn.lihongjie.coal.base.dto.OrgCommonDto;
 import lombok.Data;
 
 @Data
-public class DepartmentDto extends OrgCommonDto {}
+public class DepartmentDto extends OrgCommonDto {
+    private String parent;
+}
diff --git a/src/main/java/cn/lihongjie/coal/department/dto/DepartmentTreeDto.java b/src/main/java/cn/lihongjie/coal/department/dto/DepartmentTreeDto.java
new file mode 100644
index 00000000..c78245b1
--- /dev/null
+++ b/src/main/java/cn/lihongjie/coal/department/dto/DepartmentTreeDto.java
@@ -0,0 +1,12 @@
+package cn.lihongjie.coal.department.dto;
+
+import cn.lihongjie.coal.base.dto.OrgCommonDto;
+
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+public class DepartmentTreeDto extends OrgCommonDto {
+    private List<DepartmentTreeDto> children;
+}
diff --git a/src/main/java/cn/lihongjie/coal/department/dto/UpdateDepartmentDto.java b/src/main/java/cn/lihongjie/coal/department/dto/UpdateDepartmentDto.java
index 252ca7ac..660dc1c2 100644
--- a/src/main/java/cn/lihongjie/coal/department/dto/UpdateDepartmentDto.java
+++ b/src/main/java/cn/lihongjie/coal/department/dto/UpdateDepartmentDto.java
@@ -5,4 +5,6 @@ import cn.lihongjie.coal.base.dto.OrgCommonDto;
 import lombok.Data;
 
 @Data
-public class UpdateDepartmentDto extends OrgCommonDto {}
+public class UpdateDepartmentDto extends OrgCommonDto {
+    private String parent;
+}
diff --git a/src/main/java/cn/lihongjie/coal/department/entity/DepartmentEntity.java b/src/main/java/cn/lihongjie/coal/department/entity/DepartmentEntity.java
index bf1cd3be..b9b1e2e9 100644
--- a/src/main/java/cn/lihongjie/coal/department/entity/DepartmentEntity.java
+++ b/src/main/java/cn/lihongjie/coal/department/entity/DepartmentEntity.java
@@ -2,15 +2,28 @@ package cn.lihongjie.coal.department.entity;
 
 import cn.lihongjie.coal.base.entity.OrgCommonEntity;
 
+import jakarta.persistence.CascadeType;
 import jakarta.persistence.Entity;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
 
 import lombok.Getter;
 import lombok.Setter;
 
 import org.hibernate.annotations.Comment;
 
+import java.util.List;
+
 @Entity
 @Comment("部门信息")
 @Getter
 @Setter
-public class DepartmentEntity extends OrgCommonEntity {}
+public class DepartmentEntity extends OrgCommonEntity {
+
+
+    @OneToMany(mappedBy = "parent", cascade = CascadeType.ALL)
+    private List<DepartmentEntity> children;
+
+    @ManyToOne
+    private DepartmentEntity parent;
+}
diff --git a/src/main/java/cn/lihongjie/coal/department/mapper/DepartmentMapper.java b/src/main/java/cn/lihongjie/coal/department/mapper/DepartmentMapper.java
index 6093ecc2..a6400ee9 100644
--- a/src/main/java/cn/lihongjie/coal/department/mapper/DepartmentMapper.java
+++ b/src/main/java/cn/lihongjie/coal/department/mapper/DepartmentMapper.java
@@ -3,6 +3,7 @@ package cn.lihongjie.coal.department.mapper;
 import cn.lihongjie.coal.base.mapper.BaseMapper;
 import cn.lihongjie.coal.department.dto.CreateDepartmentDto;
 import cn.lihongjie.coal.department.dto.DepartmentDto;
+import cn.lihongjie.coal.department.dto.DepartmentTreeDto;
 import cn.lihongjie.coal.department.dto.UpdateDepartmentDto;
 import cn.lihongjie.coal.department.entity.DepartmentEntity;
 
@@ -16,4 +17,7 @@ import org.mapstruct.control.DeepClone;
         mappingControl = DeepClone.class)
 public interface DepartmentMapper
         extends BaseMapper<
-                DepartmentEntity, DepartmentDto, CreateDepartmentDto, UpdateDepartmentDto> {}
+                DepartmentEntity, DepartmentDto, CreateDepartmentDto, UpdateDepartmentDto> {
+
+    DepartmentTreeDto toTreeDto(DepartmentEntity departmentEntity);
+}
diff --git a/src/main/java/cn/lihongjie/coal/department/service/DepartmentService.java b/src/main/java/cn/lihongjie/coal/department/service/DepartmentService.java
index dc817dd1..2c817778 100644
--- a/src/main/java/cn/lihongjie/coal/department/service/DepartmentService.java
+++ b/src/main/java/cn/lihongjie/coal/department/service/DepartmentService.java
@@ -5,6 +5,7 @@ import cn.lihongjie.coal.base.dto.IdRequest;
 import cn.lihongjie.coal.base.service.BaseService;
 import cn.lihongjie.coal.department.dto.CreateDepartmentDto;
 import cn.lihongjie.coal.department.dto.DepartmentDto;
+import cn.lihongjie.coal.department.dto.DepartmentTreeDto;
 import cn.lihongjie.coal.department.dto.UpdateDepartmentDto;
 import cn.lihongjie.coal.department.entity.DepartmentEntity;
 import cn.lihongjie.coal.department.mapper.DepartmentMapper;
@@ -22,6 +23,10 @@ import org.springframework.data.domain.Sort;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
 @Service
 @Slf4j
 @Transactional
@@ -65,6 +70,27 @@ class DepartmentService extends BaseService<DepartmentEntity, DepartmentReposito
         return mapper.toDto(entity);
     }
 
+    public List<DepartmentTreeDto> getRoots() {
+
+        List<DepartmentEntity> roots = this.repository.findAll( (root, query, criteriaBuilder) -> criteriaBuilder.isNull(root.get("parent")));
+        return roots.stream().map(de -> this.mapper.toTreeDto(de)).collect(Collectors.toList());
+
+
+    }
+
+
+    public List<DepartmentTreeDto> getTreeByIds(IdRequest id) {
+
+        if (id.getIds().isEmpty()) {
+            return new ArrayList<>();
+        }
+        List<DepartmentEntity> roots = this.repository.findAll((root, query, criteriaBuilder) -> root.get("id").in(id.getIds()));
+        return roots.stream().map(de -> this.mapper.toTreeDto(de)).collect(Collectors.toList());
+
+
+    }
+
+
     public Page<DepartmentDto> list(CommonQuery query) {
 
         Page<DepartmentEntity> page =