diff --git a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/model/entity/UserDO.java b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/model/entity/UserDO.java
index 81c5a87a..086afbe8 100644
--- a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/model/entity/UserDO.java
+++ b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/model/entity/UserDO.java
@@ -23,6 +23,7 @@ import lombok.Data;
 import com.baomidou.mybatisplus.annotation.TableName;
 
 import top.charles7c.cnadmin.common.base.BaseDO;
+import top.charles7c.cnadmin.common.enums.DataTypeEnum;
 import top.charles7c.cnadmin.common.enums.DisEnableStatusEnum;
 import top.charles7c.cnadmin.common.enums.GenderEnum;
 
@@ -83,6 +84,11 @@ public class UserDO extends BaseDO {
      */
     private DisEnableStatusEnum status;
 
+    /**
+     * 类型（1：系统内置，2：自定义）
+     */
+    private DataTypeEnum type;
+
     /**
      * 最后一次修改密码时间
      */
diff --git a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/model/vo/UserDetailVO.java b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/model/vo/UserDetailVO.java
index 71d5a35b..fa31cf14 100644
--- a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/model/vo/UserDetailVO.java
+++ b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/model/vo/UserDetailVO.java
@@ -18,6 +18,7 @@ package top.charles7c.cnadmin.system.model.vo;
 
 import java.time.LocalDateTime;
 import java.util.List;
+import java.util.Objects;
 
 import lombok.Data;
 
@@ -28,8 +29,10 @@ import com.alibaba.excel.annotation.ExcelProperty;
 
 import top.charles7c.cnadmin.common.base.BaseDetailVO;
 import top.charles7c.cnadmin.common.config.easyexcel.ExcelBaseEnumConverter;
+import top.charles7c.cnadmin.common.enums.DataTypeEnum;
 import top.charles7c.cnadmin.common.enums.DisEnableStatusEnum;
 import top.charles7c.cnadmin.common.enums.GenderEnum;
+import top.charles7c.cnadmin.common.util.helper.LoginHelper;
 
 /**
  * 用户详情信息
@@ -93,6 +96,13 @@ public class UserDetailVO extends BaseDetailVO {
     @ExcelProperty(value = "状态", converter = ExcelBaseEnumConverter.class)
     private DisEnableStatusEnum status;
 
+    /**
+     * 类型（1：系统内置，2：自定义）
+     */
+    @Schema(description = "类型（1：系统内置，2：自定义）")
+    @ExcelProperty(value = "类型", converter = ExcelBaseEnumConverter.class)
+    private DataTypeEnum type;
+
     /**
      * 描述
      */
@@ -131,4 +141,9 @@ public class UserDetailVO extends BaseDetailVO {
     @Schema(description = "所属角色")
     @ExcelProperty(value = "所属角色")
     private String roleNames;
+
+    @Override
+    public Boolean getDisabled() {
+        return DataTypeEnum.SYSTEM.equals(type) || Objects.equals(this.getId(), LoginHelper.getUserId());
+    }
 }
diff --git a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/model/vo/UserVO.java b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/model/vo/UserVO.java
index c5328743..faad073b 100644
--- a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/model/vo/UserVO.java
+++ b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/model/vo/UserVO.java
@@ -26,6 +26,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import cn.hutool.core.util.DesensitizedUtil;
 
 import top.charles7c.cnadmin.common.base.BaseVO;
+import top.charles7c.cnadmin.common.enums.DataTypeEnum;
 import top.charles7c.cnadmin.common.enums.DisEnableStatusEnum;
 import top.charles7c.cnadmin.common.enums.GenderEnum;
 import top.charles7c.cnadmin.common.util.helper.LoginHelper;
@@ -85,6 +86,12 @@ public class UserVO extends BaseVO {
     @Schema(description = "状态（1：启用，2：禁用）")
     private DisEnableStatusEnum status;
 
+    /**
+     * 类型（1：系统内置，2：自定义）
+     */
+    @Schema(description = "类型（1：系统内置，2：自定义）")
+    private DataTypeEnum type;
+
     /**
      * 描述
      */
diff --git a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/UserRoleService.java b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/UserRoleService.java
index fd8e9660..46ce389e 100644
--- a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/UserRoleService.java
+++ b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/UserRoleService.java
@@ -53,4 +53,12 @@ public interface UserRoleService {
      * @return 角色 ID 列表
      */
     List<Long> listRoleIdByUserId(Long userId);
+
+    /**
+     * 根据用户 ID 删除
+     *
+     * @param userIds
+     *            用户 ID 列表
+     */
+    void deleteByUserIds(List<Long> userIds);
 }
\ No newline at end of file
diff --git a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserRoleServiceImpl.java b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserRoleServiceImpl.java
index e80bc61a..feb5e9be 100644
--- a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserRoleServiceImpl.java
+++ b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserRoleServiceImpl.java
@@ -23,8 +23,6 @@ import lombok.RequiredArgsConstructor;
 
 import org.springframework.stereotype.Service;
 
-import cn.hutool.core.collection.CollUtil;
-
 import top.charles7c.cnadmin.system.mapper.UserRoleMapper;
 import top.charles7c.cnadmin.system.model.entity.UserRoleDO;
 import top.charles7c.cnadmin.system.service.UserRoleService;
@@ -43,9 +41,6 @@ public class UserRoleServiceImpl implements UserRoleService {
 
     @Override
     public void save(List<Long> roleIds, Long userId) {
-        if (CollUtil.isEmpty(roleIds)) {
-            return;
-        }
         // 删除原有关联
         userRoleMapper.lambdaUpdate().eq(UserRoleDO::getUserId, userId).remove();
         // 保存最新关联
@@ -63,4 +58,9 @@ public class UserRoleServiceImpl implements UserRoleService {
     public List<Long> listRoleIdByUserId(Long userId) {
         return userRoleMapper.selectRoleIdByUserId(userId);
     }
+
+    @Override
+    public void deleteByUserIds(List<Long> userIds) {
+        userRoleMapper.lambdaUpdate().in(UserRoleDO::getUserId, userIds).remove();
+    }
 }
diff --git a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserServiceImpl.java b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserServiceImpl.java
index 9df420d8..11012650 100644
--- a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserServiceImpl.java
+++ b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserServiceImpl.java
@@ -19,6 +19,8 @@ package top.charles7c.cnadmin.system.service.impl;
 import java.io.File;
 import java.time.LocalDateTime;
 import java.util.List;
+import java.util.Optional;
+import java.util.stream.Collectors;
 
 import javax.annotation.Resource;
 
@@ -28,6 +30,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.multipart.MultipartFile;
 
+import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.io.file.FileNameUtil;
 import cn.hutool.core.util.StrUtil;
@@ -37,6 +40,7 @@ import top.charles7c.cnadmin.common.config.properties.LocalStorageProperties;
 import top.charles7c.cnadmin.common.constant.FileConsts;
 import top.charles7c.cnadmin.common.constant.StringConsts;
 import top.charles7c.cnadmin.common.constant.SysConsts;
+import top.charles7c.cnadmin.common.enums.DataTypeEnum;
 import top.charles7c.cnadmin.common.enums.DisEnableStatusEnum;
 import top.charles7c.cnadmin.common.model.dto.LoginUser;
 import top.charles7c.cnadmin.common.service.CommonUserService;
@@ -95,6 +99,16 @@ public class UserServiceImpl extends BaseServiceImpl<UserMapper, UserDO, UserVO,
         String username = request.getUsername();
         boolean isExists = this.checkNameExists(username, id);
         CheckUtils.throwIf(() -> isExists, String.format("修改失败，'%s'已存在", username));
+        UserDO oldUser = super.getById(id);
+        if (DataTypeEnum.SYSTEM.equals(oldUser.getType())) {
+            CheckUtils.throwIf(() -> DisEnableStatusEnum.DISABLE.equals(request.getStatus()),
+                String.format("'%s' 是系统内置用户，不允许禁用", oldUser.getNickname()));
+            List<Long> oldRoleIdList =
+                userRoleService.listRoleIdByUserId(id).stream().sorted().collect(Collectors.toList());
+            List<Long> newRoleIdList = request.getRoleIds().stream().sorted().collect(Collectors.toList());
+            CheckUtils.throwIf(() -> !CollUtil.isEqualList(newRoleIdList, oldRoleIdList),
+                String.format("'%s' 是系统内置用户，不允许变更所属角色", oldUser.getNickname()));
+        }
 
         // 更新信息
         super.update(request, id);
@@ -102,6 +116,21 @@ public class UserServiceImpl extends BaseServiceImpl<UserMapper, UserDO, UserVO,
         userRoleService.save(request.getRoleIds(), id);
     }
 
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public void delete(List<Long> ids) {
+        List<UserDO> list =
+            baseMapper.lambdaQuery().select(UserDO::getNickname, UserDO::getType).in(UserDO::getId, ids).list();
+        Optional<UserDO> isSystemData = list.stream().filter(u -> DataTypeEnum.SYSTEM.equals(u.getType())).findFirst();
+        CheckUtils.throwIf(isSystemData::isPresent,
+            String.format("所选用户 '%s' 是系统内置用户，不允许删除", isSystemData.orElseGet(UserDO::new).getNickname()));
+
+        // 删除用户
+        super.delete(ids);
+        // 删除用户和角色关联
+        userRoleService.deleteByUserIds(ids);
+    }
+
     @Override
     public void fillDetail(Object detailObj) {
         super.fillDetail(detailObj);
diff --git a/continew-admin-ui/src/api/system/user.ts b/continew-admin-ui/src/api/system/user.ts
index 6e284381..fe8239d4 100644
--- a/continew-admin-ui/src/api/system/user.ts
+++ b/continew-admin-ui/src/api/system/user.ts
@@ -12,6 +12,7 @@ export interface UserRecord {
   phone?: string;
   description?: string;
   status?: number;
+  type?: number;
   pwdResetTime?: string;
   createUserString?: string;
   createTime?: string;
diff --git a/continew-admin-ui/src/views/system/user/index.vue b/continew-admin-ui/src/views/system/user/index.vue
index 0166b15f..f40a768e 100644
--- a/continew-admin-ui/src/views/system/user/index.vue
+++ b/continew-admin-ui/src/views/system/user/index.vue
@@ -139,15 +139,15 @@
           >
             <template #columns>
               <a-table-column title="ID" data-index="id" />
-              <a-table-column title="用户名">
+              <a-table-column title="用户名" :width="115">
                 <template #cell="{ record }">
                   <a-link @click="toDetail(record.id)">{{
                     record.username
                   }}</a-link>
                 </template>
               </a-table-column>
-              <a-table-column title="昵称" data-index="nickname" :width="120" />
-              <a-table-column title="性别">
+              <a-table-column title="昵称" data-index="nickname" :width="115" />
+              <a-table-column title="性别" align="center">
                 <template #cell="{ record }">
                   <span v-if="record.gender === 1">男</span>
                   <span v-else-if="record.gender === 2">女</span>
@@ -161,7 +161,7 @@
                   </a-avatar>
                 </template>
               </a-table-column>
-              <a-table-column title="联系方式" :width="175">
+              <a-table-column title="联系方式" :width="170">
                 <template #cell="{ record }">
                   {{ record.email }}<br v-if="record.email && record.phone">
                   {{ record.phone }}
@@ -178,7 +178,12 @@
                   />
                 </template>
               </a-table-column>
-              <a-table-column title="描述" data-index="description" ellipsis tooltip />
+              <a-table-column title="类型" align="center">
+                <template #cell="{ record }">
+                  <a-tag v-if="record.type === 1" color="red">系统内置</a-tag>
+                  <a-tag v-else color="arcoblue">自定义</a-tag>
+                </template>
+              </a-table-column>
               <a-table-column title="创建人/创建时间" :width="175">
                 <template #cell="{ record }">
                   {{ record.createUserString }}<br>
@@ -243,6 +248,7 @@
                     type="text"
                     size="small"
                     title="分配角色"
+                    :disabled="record.disabled"
                     @click="toUpdateRole(record.id)"
                   >
                     <template #icon><svg-icon icon-class="reference" /></template>
@@ -319,7 +325,7 @@
               style="width: 431px"
             />
           </a-form-item>
-          <a-form-item label="所属角色" field="roleIds">
+          <a-form-item label="所属角色" field="roleIds" :disabled="form.disabled">
             <a-select
               v-model="form.roleIds"
               :options="roleOptions"
@@ -674,6 +680,7 @@
       status: 1,
       deptId: undefined,
       roleIds: [] as Array<string>,
+      disabled: false,
     };
     proxy.$refs.formRef?.resetFields();
   };
@@ -825,11 +832,19 @@
    * @param record 记录信息
    */
   const handleChangeStatus = (record: UserRecord) => {
-    if (record.id) {
+    const { id } = record;
+    if (id) {
       const tip = record.status === 1 ? '启用' : '禁用';
-      updateUser(record, record.id)
-        .then(() => {
-          proxy.$message.success(`${tip}成功`);
+      getUser(id)
+        .then((res) => {
+          res.data.status = record.status;
+          updateUser(res.data, id)
+            .then(() => {
+              proxy.$message.success(`${tip}成功`);
+            })
+            .catch(() => {
+              record.status = record.status === 1 ? 2 : 1;
+            });
         })
         .catch(() => {
           record.status = record.status === 1 ? 2 : 1;
diff --git a/continew-admin-webapi/src/main/resources/db/changelog/v0.0.1/continew-admin_data.sql b/continew-admin-webapi/src/main/resources/db/changelog/v0.0.1/continew-admin_data.sql
index 3b56fb2b..075ed93f 100644
--- a/continew-admin-webapi/src/main/resources/db/changelog/v0.0.1/continew-admin_data.sql
+++ b/continew-admin-webapi/src/main/resources/db/changelog/v0.0.1/continew-admin_data.sql
@@ -49,8 +49,8 @@ INSERT IGNORE INTO `sys_role` VALUES (1, '超级管理员', 'admin', 1, '系统
 INSERT IGNORE INTO `sys_role` VALUES (2, '测试人员', 'test', 5, NULL, 2, 1, 2, 1, NOW(), 1, NOW());
 
 -- 初始化默认用户：admin/admin123；test/123456
-INSERT IGNORE INTO `sys_user` VALUES (1, 'admin', '超级管理员', '9802815bcc5baae7feb1ae0d0566baf2', 1, 'charles7c@126.com', '18888888888', NULL, '系统初始用户', 1, NOW(), 1, 1, NOW(), 1, NOW());
-INSERT IGNORE INTO `sys_user` VALUES (2, 'test', '测试员', '8e114197e1b33783a00542ad67e80516', 2, NULL, NULL, NULL, '系统初始用户', 2, NOW(), 5, 1, NOW(), 1, NOW());
+INSERT IGNORE INTO `sys_user` VALUES (1, 'admin', '超级管理员', '9802815bcc5baae7feb1ae0d0566baf2', 1, 'charles7c@126.com', '18888888888', NULL, '系统初始用户', 1, 1, NOW(), 1, 1, NOW(), 1, NOW());
+INSERT IGNORE INTO `sys_user` VALUES (2, 'test', '测试员', '8e114197e1b33783a00542ad67e80516', 2, NULL, NULL, NULL, NULL, 2, 2, NOW(), 5, 1, NOW(), 1, NOW());
 
 -- 初始化默认角色和菜单关联数据
 INSERT IGNORE INTO `sys_role_menu` VALUES (2, 1000);
diff --git a/continew-admin-webapi/src/main/resources/db/changelog/v0.0.1/continew-admin_table.sql b/continew-admin-webapi/src/main/resources/db/changelog/v0.0.1/continew-admin_table.sql
index 5139c520..6d1ab7de 100644
--- a/continew-admin-webapi/src/main/resources/db/changelog/v0.0.1/continew-admin_table.sql
+++ b/continew-admin-webapi/src/main/resources/db/changelog/v0.0.1/continew-admin_table.sql
@@ -86,6 +86,7 @@ CREATE TABLE IF NOT EXISTS `sys_user` (
     `avatar` varchar(255) DEFAULT NULL COMMENT '头像地址',
     `description` varchar(512) DEFAULT NULL COMMENT '描述',
     `status` tinyint(1) UNSIGNED DEFAULT 1 COMMENT '状态（1：启用，2：禁用）',
+    `type` tinyint(1) UNSIGNED DEFAULT 2 COMMENT '类型（1：系统内置，2：自定义）',
     `pwd_reset_time` datetime DEFAULT NULL COMMENT '最后一次修改密码时间',
     `dept_id` bigint(20) UNSIGNED NOT NULL COMMENT '部门ID',
     `create_user` bigint(20) UNSIGNED NOT NULL COMMENT '创建人',