diff --git a/src/main/java/iet/ustb/sf/controller/CategoryController.java b/src/main/java/iet/ustb/sf/controller/CategoryController.java
index 4ed8503..b9069d4 100644
--- a/src/main/java/iet/ustb/sf/controller/CategoryController.java
+++ b/src/main/java/iet/ustb/sf/controller/CategoryController.java
@@ -31,8 +31,6 @@ public class CategoryController {
 
     /**
      * 查询分类
-     * @param params 分类参数
-     * @return 结果
      */
     @Operation(summary = "查询分类")
     @PostMapping("/showCategory")
@@ -41,4 +39,14 @@ public class CategoryController {
         List<Category> result = categoryService.showCategory(category);
         return R.ok(result);
     }
+
+    /**
+     * 保存分类
+     */
+    @Operation(summary = "保存分类")
+    @PostMapping("/saveCategory")
+    public R<?> addCategory(@RequestBody JSONObject params) {
+        categoryService.addCategory(params);
+        return R.ok();
+    }
 }
diff --git a/src/main/java/iet/ustb/sf/service/CategoryService.java b/src/main/java/iet/ustb/sf/service/CategoryService.java
index bdb45f0..2515545 100644
--- a/src/main/java/iet/ustb/sf/service/CategoryService.java
+++ b/src/main/java/iet/ustb/sf/service/CategoryService.java
@@ -1,5 +1,6 @@
 package iet.ustb.sf.service;
 
+import com.alibaba.fastjson.JSONObject;
 import iet.ustb.sf.domain.Category;
 import com.baomidou.mybatisplus.extension.service.IService;
 
@@ -13,4 +14,6 @@ import java.util.List;
 public interface CategoryService extends IService<Category> {
 
     List<Category> showCategory(Category category);
+
+    void addCategory(JSONObject params);
 }
diff --git a/src/main/java/iet/ustb/sf/service/impl/CategoryServiceImpl.java b/src/main/java/iet/ustb/sf/service/impl/CategoryServiceImpl.java
index abb901f..0494183 100644
--- a/src/main/java/iet/ustb/sf/service/impl/CategoryServiceImpl.java
+++ b/src/main/java/iet/ustb/sf/service/impl/CategoryServiceImpl.java
@@ -1,5 +1,6 @@
 package iet.ustb.sf.service.impl;
 
+import com.alibaba.fastjson.JSONObject;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import iet.ustb.sf.domain.Category;
@@ -8,12 +9,12 @@ import iet.ustb.sf.exception.ThrowUtils;
 import iet.ustb.sf.mapper.TargetMapper;
 import iet.ustb.sf.service.CategoryService;
 import iet.ustb.sf.mapper.CategoryMapper;
+import iet.ustb.sf.util.CheckUtils;
 import jakarta.annotation.Resource;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.stereotype.Service;
 
-import java.util.ArrayList;
-import java.util.List;
+import java.util.*;
 
 /**
  * @author hyy
@@ -50,17 +51,40 @@ public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category>
         } else {
             queryWrapper.eq("topic", category.getTopic());
         }
-        if (StringUtils.isEmpty(category.getParentId())) {
-            queryWrapper.isNull("parent_id");
-        } else {
-            queryWrapper.eq("parent_id", category.getParentId());
-        }
+        queryWrapper.orderByDesc("update_time");
         categoryList = categoryMapper.selectList(queryWrapper);
         for (Category tmp : categoryList) {
             tmp.setOrganization(category.getOrganization());
         }
         return categoryList;
     }
+
+    @Override
+    public void addCategory(JSONObject params) {
+        Category category = JSONObject.parseObject(params.toString(), Category.class);
+        ThrowUtils.throwIf(category == null, ErrorCode.PARAMS_ERROR, "传入分类不正确！");
+        CheckUtils.checkEmpty(category.getNameCn(), "中文分类");
+        CheckUtils.checkEmpty(category.getTopic(), "主题");
+        List<String> topicList = Arrays.asList("质量", "生产", "能源", "运维", "成本", "测试");
+        ThrowUtils.throwIf(!topicList.contains(category.getTopic()), ErrorCode.PARAMS_ERROR, "主题名称错误！");
+
+        if ("".equals(category.getId())) {
+            category.setId(UUID.randomUUID().toString());
+        }
+
+        List<Category> categoryList = categoryMapper.selectList(new QueryWrapper<Category>().eq("name_en", category.getNameCn()));
+        for (Category tmp : categoryList) {
+            boolean bl = tmp.getNameCn().equals(category.getNameCn()) && !tmp.getId().equals(category.getId());
+            ThrowUtils.throwIf(bl, ErrorCode.PARAMS_ERROR, "分类名不能重复！");
+        }
+
+        Date now = new Date();
+        if (category.getCreateTime() == null) {
+            category.setCreateTime(now);
+        }
+        category.setUpdateTime(now);
+        categoryMapper.insert(category);
+    }
 }