diff --git a/src/main/java/com/dc/dc_project/controller/StandardCategoryController.java b/src/main/java/com/dc/dc_project/controller/StandardCategoryController.java
index 3e9cfd6..c419734 100644
--- a/src/main/java/com/dc/dc_project/controller/StandardCategoryController.java
+++ b/src/main/java/com/dc/dc_project/controller/StandardCategoryController.java
@@ -28,6 +28,12 @@ public class StandardCategoryController {
         return standardCategoryService.getList(standardCategoryDto);
     }
 
+    @PostMapping("/tree")
+    public ResponseResult tree(@RequestBody StandardCategoryQueDto standardCategoryDto) {
+        Long userId = StpUtil.getLoginIdAsLong();
+        return standardCategoryService.getTree(standardCategoryDto, userId);
+    }
+
     @PostMapping("/add")
     public ResponseResult add(@RequestBody @Validated StandardCategoryDto standardCategoryDto) {
         return standardCategoryService.add(standardCategoryDto);
diff --git a/src/main/java/com/dc/dc_project/model/vo/StandardCategoryVo.java b/src/main/java/com/dc/dc_project/model/vo/StandardCategoryVo.java
new file mode 100644
index 0000000..5b3b524
--- /dev/null
+++ b/src/main/java/com/dc/dc_project/model/vo/StandardCategoryVo.java
@@ -0,0 +1,58 @@
+package com.dc.dc_project.model.vo;
+
+
+import com.dc.dc_project.model.TreeNode;
+import com.dc.dc_project.model.pojo.StandardCategory;
+import jakarta.validation.constraints.NotNull;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class StandardCategoryVo implements TreeNode<StandardCategoryVo> {
+
+    /**
+     * 上级分类ID
+     */
+    private Long parentId;
+
+    private Long id;
+
+    /**
+     * 分类名称（如水利、电力、公路等）
+     */
+    @NotNull
+    private String name;
+
+    /**
+     * 分类编码（可用于同步外部标准库）
+     */
+    private String code;
+
+    /**
+     * 排序号
+     */
+    private Integer sortOrder;
+
+    /**
+     * 备注
+     */
+    private String remark;
+
+    private List<StandardCategoryVo> children;
+
+    public static StandardCategoryVo poToVo(StandardCategory standardCategory){
+        StandardCategoryVo standardCategoryVo = new StandardCategoryVo();
+        standardCategoryVo.setId(standardCategory.getId());
+        standardCategoryVo.setName(standardCategory.getName());
+        standardCategoryVo.setCode(standardCategory.getCode());
+        standardCategoryVo.setSortOrder(standardCategory.getSortOrder());
+        standardCategoryVo.setRemark(standardCategory.getRemark());
+        standardCategoryVo.setParentId(standardCategory.getParentId());
+        return standardCategoryVo;
+    }
+}
diff --git a/src/main/java/com/dc/dc_project/service/StandardCategoryService.java b/src/main/java/com/dc/dc_project/service/StandardCategoryService.java
index 6a69e86..0881c4d 100644
--- a/src/main/java/com/dc/dc_project/service/StandardCategoryService.java
+++ b/src/main/java/com/dc/dc_project/service/StandardCategoryService.java
@@ -45,4 +45,13 @@ public interface StandardCategoryService extends IService<StandardCategory> {
      * @return
     **/
     ResponseResult updateStandardCategory(StandardCategoryUpdateDto standardCategoryDto);
+
+    /**
+     * 获取标准分类树
+     * @param standardCategoryDto
+     * @param userId
+     * @
+     * @return
+    **/
+    ResponseResult getTree(StandardCategoryQueDto standardCategoryDto, Long userId);
 }
diff --git a/src/main/java/com/dc/dc_project/service/impl/StandardCategoryServiceImpl.java b/src/main/java/com/dc/dc_project/service/impl/StandardCategoryServiceImpl.java
index ff2cf41..5d3892f 100644
--- a/src/main/java/com/dc/dc_project/service/impl/StandardCategoryServiceImpl.java
+++ b/src/main/java/com/dc/dc_project/service/impl/StandardCategoryServiceImpl.java
@@ -7,12 +7,15 @@ import com.dc.dc_project.model.dto.StandardCategoryDto;
 import com.dc.dc_project.model.dto.StandardCategoryQueDto;
 import com.dc.dc_project.model.dto.StandardCategoryUpdateDto;
 import com.dc.dc_project.model.pojo.StandardCategory;
+import com.dc.dc_project.model.vo.StandardCategoryVo;
 import com.dc.dc_project.service.StandardCategoryService;
 import com.dc.dc_project.mapper.StandardCategoryMapper;
+import com.dc.dc_project.utils.TreeUtil;
 import org.springframework.stereotype.Service;
 import lombok.extern.slf4j.Slf4j;
 
 import java.util.List;
+import java.util.stream.Collectors;
 
 /**
 * @author ADMIN
@@ -106,6 +109,17 @@ public class StandardCategoryServiceImpl extends ServiceImpl<StandardCategoryMap
         }
         return ResponseResult.success("修改成功");
     }
+
+    @Override
+    public ResponseResult getTree(StandardCategoryQueDto standardCategoryDto, Long userId) {
+        LambdaQueryWrapper<StandardCategory> queryWrapper = new LambdaQueryWrapper<StandardCategory>()
+                .eq(StandardCategory::getIsDeleted, 0)
+                .eq(standardCategoryDto.getId() != null, StandardCategory::getId, standardCategoryDto.getId())
+                .like(standardCategoryDto.getName() != null, StandardCategory::getName, standardCategoryDto.getName());
+        List<StandardCategory> list = this.list(queryWrapper);
+        List<StandardCategoryVo> tree = TreeUtil.buildTree(list.stream().map(StandardCategoryVo::poToVo).collect(Collectors.toList()));
+        return ResponseResult.success(tree);
+    }
 }