diff --git a/src/api/infra/demo/demo03/inner/index.ts b/src/api/infra/demo/demo03/inner/index.ts
index f15ee1dc..1000d9cc 100644
--- a/src/api/infra/demo/demo03/inner/index.ts
+++ b/src/api/infra/demo/demo03/inner/index.ts
@@ -1,53 +1,81 @@
 import request from '@/config/axios'
+import type { Dayjs } from 'dayjs';
 
-export interface Demo03StudentVO {
-  id: number
-  name: string
-  sex: number
-  birthday: Date
-  description: string
+/** 学生课程信息 */
+export interface Demo03Course {
+  id: number; // 编号
+  studentId?: number; // 学生编号
+  name?: string; // 名字
+  score?: number; // 分数
 }
 
-// 查询学生分页
-export const getDemo03StudentPage = async (params) => {
-  return await request.get({ url: `/infra/demo03-student/page`, params })
+/** 学生班级信息 */
+export interface Demo03Grade {
+  id: number; // 编号
+  studentId?: number; // 学生编号
+  name?: string; // 名字
+  teacher?: string; // 班主任
 }
 
-// 查询学生详情
-export const getDemo03Student = async (id: number) => {
-  return await request.get({ url: `/infra/demo03-student/get?id=` + id })
+/** 学生信息 */
+export interface Demo03Student {
+  id: number; // 编号
+  name?: string; // 名字
+  sex?: number; // 性别
+  birthday?: string | Dayjs; // 出生日期
+  description?: string; // 简介
+  demo03courses?: Demo03Course[]
+  demo03grade?: Demo03Grade
 }
 
-// 新增学生
-export const createDemo03Student = async (data: Demo03StudentVO) => {
-  return await request.post({ url: `/infra/demo03-student/create`, data })
-}
+// 学生 API
+export const Demo03StudentApi = {
+  // 查询学生分页
+  getDemo03StudentPage: async (params: any) => {
+    return await request.get({ url: `/infra/demo03-student-inner/page`, params })
+  },
 
-// 修改学生
-export const updateDemo03Student = async (data: Demo03StudentVO) => {
-  return await request.put({ url: `/infra/demo03-student/update`, data })
-}
+  // 查询学生详情
+  getDemo03Student: async (id: number) => {
+    return await request.get({ url: `/infra/demo03-student-inner/get?id=` + id })
+  },
 
-// 删除学生
-export const deleteDemo03Student = async (id: number) => {
-  return await request.delete({ url: `/infra/demo03-student/delete?id=` + id })
-}
+  // 新增学生
+  createDemo03Student: async (data: Demo03Student) => {
+    return await request.post({ url: `/infra/demo03-student-inner/create`, data })
+  },
 
-// 导出学生 Excel
-export const exportDemo03Student = async (params) => {
-  return await request.download({ url: `/infra/demo03-student/export-excel`, params })
-}
+  // 修改学生
+  updateDemo03Student: async (data: Demo03Student) => {
+    return await request.put({ url: `/infra/demo03-student-inner/update`, data })
+  },
+
+  // 删除学生
+  deleteDemo03Student: async (id: number) => {
+    return await request.delete({ url: `/infra/demo03-student-inner/delete?id=` + id })
+  },
+
+  /** 批量删除学生 */
+  deleteDemo03StudentList: async (ids: number[]) => {
+    return await request.delete({ url: `/infra/demo03-student-inner/delete-list?ids=${ids.join(',')}` })
+  },
+
+  // 导出学生 Excel
+  exportDemo03Student: async (params) => {
+    return await request.download({ url: `/infra/demo03-student-inner/export-excel`, params })
+  },
 
 // ==================== 子表（学生课程） ====================
 
-// 获得学生课程列表
-export const getDemo03CourseListByStudentId = async (studentId) => {
-  return await request.get({ url: `/infra/demo03-student/demo03-course/list-by-student-id?studentId=` + studentId })
-}
+  // 获得学生课程列表
+  getDemo03CourseListByStudentId: async (studentId) => {
+    return await request.get({ url: `/infra/demo03-student-inner/demo03-course/list-by-student-id?studentId=` + studentId })
+  },
 
 // ==================== 子表（学生班级） ====================
 
-// 获得学生班级
-export const getDemo03GradeByStudentId = async (studentId) => {
-  return await request.get({ url: `/infra/demo03-student/demo03-grade/get-by-student-id?studentId=` + studentId })
-}
\ No newline at end of file
+  // 获得学生班级
+  getDemo03GradeByStudentId: async (studentId) => {
+    return await request.get({ url: `/infra/demo03-student-inner/demo03-grade/get-by-student-id?studentId=` + studentId })
+  },
+}
diff --git a/src/views/infra/demo/demo03/erp/components/Demo03CourseList.vue b/src/views/infra/demo/demo03/erp/components/Demo03CourseList.vue
index a996bb49..d0c6b66f 100644
--- a/src/views/infra/demo/demo03/erp/components/Demo03CourseList.vue
+++ b/src/views/infra/demo/demo03/erp/components/Demo03CourseList.vue
@@ -72,7 +72,7 @@
 <script setup lang="ts">
 import { dateFormatter } from '@/utils/formatTime'
 import { isEmpty } from '@/utils/is'
-import { Demo03StudentApi } from '@/api/infra/demo/demo03/erp'
+import {Demo03Course, Demo03StudentApi} from '@/api/infra/demo/demo03/erp'
 import Demo03CourseForm from './Demo03CourseForm.vue'
 
 const { t } = useI18n() // 国际化
diff --git a/src/views/infra/demo/demo03/erp/components/Demo03GradeList.vue b/src/views/infra/demo/demo03/erp/components/Demo03GradeList.vue
index cc7bec80..3fed91f1 100644
--- a/src/views/infra/demo/demo03/erp/components/Demo03GradeList.vue
+++ b/src/views/infra/demo/demo03/erp/components/Demo03GradeList.vue
@@ -72,7 +72,7 @@
 <script setup lang="ts">
 import { dateFormatter } from '@/utils/formatTime'
 import { isEmpty } from '@/utils/is'
-import { Demo03StudentApi } from '@/api/infra/demo/demo03/erp'
+import {Demo03Grade, Demo03StudentApi} from '@/api/infra/demo/demo03/erp'
 import Demo03GradeForm from './Demo03GradeForm.vue'
 
 const { t } = useI18n() // 国际化
diff --git a/src/views/infra/demo/demo03/inner/Demo03StudentForm.vue b/src/views/infra/demo/demo03/inner/Demo03StudentForm.vue
index fe9327b9..674d13bb 100644
--- a/src/views/infra/demo/demo03/inner/Demo03StudentForm.vue
+++ b/src/views/infra/demo/demo03/inner/Demo03StudentForm.vue
@@ -49,11 +49,14 @@
   </Dialog>
 </template>
 <script setup lang="ts">
-import { getIntDictOptions, DICT_TYPE } from '@/utils/dict'
-import * as Demo03StudentApi from '@/api/infra/demo/demo03/inner'
+import { DICT_TYPE, getIntDictOptions } from '@/utils/dict'
+import { Demo03Student, Demo03StudentApi } from '@/api/infra/demo/demo03/inner'
 import Demo03CourseForm from './components/Demo03CourseForm.vue'
 import Demo03GradeForm from './components/Demo03GradeForm.vue'
 
+/** 学生 表单 */
+defineOptions({ name: 'Demo03StudentForm' })
+
 const { t } = useI18n() // 国际化
 const message = useMessage() // 消息弹窗
 
@@ -120,7 +123,7 @@ const submitForm = async () => {
   // 提交请求
   formLoading.value = true
   try {
-    const data = formData.value as unknown as Demo03StudentApi.Demo03StudentVO
+    const data = formData.value as unknown as Demo03Student
     // 拼接子表的数据
     data.demo03Courses = demo03CourseFormRef.value.getData()
     data.demo03Grade = demo03GradeFormRef.value.getData()
@@ -150,4 +153,4 @@ const resetForm = () => {
   }
   formRef.value?.resetFields()
 }
-</script>
\ No newline at end of file
+</script>
diff --git a/src/views/infra/demo/demo03/inner/components/Demo03CourseForm.vue b/src/views/infra/demo/demo03/inner/components/Demo03CourseForm.vue
index 87057513..bde79b5a 100644
--- a/src/views/infra/demo/demo03/inner/components/Demo03CourseForm.vue
+++ b/src/views/infra/demo/demo03/inner/components/Demo03CourseForm.vue
@@ -9,7 +9,7 @@
   >
     <el-table :data="formData" class="-mt-10px">
       <el-table-column label="序号" type="index" width="100" />
-       <el-table-column label="名字" min-width="150">
+      <el-table-column label="名字" min-width="150">
         <template #default="{ row, $index }">
           <el-form-item :prop="`${$index}.name`" :rules="formRules.name" class="mb-0px!">
             <el-input v-model="row.name" placeholder="请输入名字" />
@@ -35,13 +35,13 @@
   </el-row>
 </template>
 <script setup lang="ts">
-import * as Demo03StudentApi from '@/api/infra/demo/demo03/inner'
+import { Demo03StudentApi } from '@/api/infra/demo/demo03/inner'
 
 const props = defineProps<{
-  studentId: undefined // 学生编号（主表的关联字段）
+  studentId: number // 学生编号（主表的关联字段）
 }>()
 const formLoading = ref(false) // 表单的加载中
-const formData = ref([])
+const formData = ref<any[]>([])
 const formRules = reactive({
   studentId: [{ required: true, message: '学生编号不能为空', trigger: 'blur' }],
   name: [{ required: true, message: '名字不能为空', trigger: 'blur' }],
@@ -57,7 +57,7 @@ watch(
     formData.value = []
     // 2. val 非空，则加载数据
     if (!val) {
-      return;
+      return
     }
     try {
       formLoading.value = true
@@ -77,7 +77,7 @@ const handleAdd = () => {
     name: undefined,
     score: undefined
   }
-  row.studentId = props.studentId
+  row.studentId = props.studentId as any
   formData.value.push(row)
 }
 
@@ -97,4 +97,4 @@ const getData = () => {
 }
 
 defineExpose({ validate, getData })
-</script>
\ No newline at end of file
+</script>
diff --git a/src/views/infra/demo/demo03/inner/components/Demo03CourseList.vue b/src/views/infra/demo/demo03/inner/components/Demo03CourseList.vue
index d912fc5d..cfad83fe 100644
--- a/src/views/infra/demo/demo03/inner/components/Demo03CourseList.vue
+++ b/src/views/infra/demo/demo03/inner/components/Demo03CourseList.vue
@@ -1,7 +1,13 @@
 <template>
   <!-- 列表 -->
   <ContentWrap>
-    <el-table v-loading="loading" :data="list" :stripe="true" :show-overflow-tooltip="true">
+    <el-table
+      row-key="id"
+      v-loading="loading"
+      :data="list"
+      :stripe="true"
+      :show-overflow-tooltip="true"
+    >
       <el-table-column label="编号" align="center" prop="id" />
       <el-table-column label="名字" align="center" prop="name" />
       <el-table-column label="分数" align="center" prop="score" />
@@ -17,13 +23,10 @@
 </template>
 <script setup lang="ts">
 import { dateFormatter } from '@/utils/formatTime'
-import * as Demo03StudentApi from '@/api/infra/demo/demo03/inner'
-
-const { t } = useI18n() // 国际化
-const message = useMessage() // 消息弹窗
+import { Demo03StudentApi } from '@/api/infra/demo/demo03/inner'
 
 const props = defineProps<{
-  studentId: undefined // 学生编号（主表的关联字段）
+  studentId?: number // 学生编号（主表的关联字段）
 }>()
 const loading = ref(false) // 列表的加载中
 const list = ref([]) // 列表的数据
@@ -38,14 +41,8 @@ const getList = async () => {
   }
 }
 
-/** 搜索按钮操作 */
-const handleQuery = () => {
-  queryParams.pageNo = 1
-  getList()
-}
-
 /** 初始化 **/
 onMounted(() => {
   getList()
 })
-</script>
\ No newline at end of file
+</script>
diff --git a/src/views/infra/demo/demo03/inner/components/Demo03GradeForm.vue b/src/views/infra/demo/demo03/inner/components/Demo03GradeForm.vue
index e0eeb192..a15bf51f 100644
--- a/src/views/infra/demo/demo03/inner/components/Demo03GradeForm.vue
+++ b/src/views/infra/demo/demo03/inner/components/Demo03GradeForm.vue
@@ -6,7 +6,7 @@
     label-width="100px"
     v-loading="formLoading"
   >
-     <el-form-item label="名字" prop="name">
+    <el-form-item label="名字" prop="name">
       <el-input v-model="formData.name" placeholder="请输入名字" />
     </el-form-item>
     <el-form-item label="班主任" prop="teacher">
@@ -15,13 +15,13 @@
   </el-form>
 </template>
 <script setup lang="ts">
-import * as Demo03StudentApi from '@/api/infra/demo/demo03/inner'
+import { Demo03StudentApi } from '@/api/infra/demo/demo03/inner'
 
 const props = defineProps<{
-  studentId: undefined // 学生编号（主表的关联字段）
+  studentId: number // 学生编号（主表的关联字段）
 }>()
 const formLoading = ref(false) // 表单的加载中
-const formData = ref([])
+const formData = ref<any>({})
 const formRules = reactive({
   studentId: [{ required: true, message: '学生编号不能为空', trigger: 'blur' }],
   name: [{ required: true, message: '名字不能为空', trigger: 'blur' }],
@@ -38,11 +38,11 @@ watch(
       id: undefined,
       studentId: undefined,
       name: undefined,
-      teacher: undefined,
+      teacher: undefined
     }
     // 2. val 非空，则加载数据
     if (!val) {
-      return;
+      return
     }
     try {
       formLoading.value = true
@@ -69,4 +69,4 @@ const getData = () => {
 }
 
 defineExpose({ validate, getData })
-</script>
\ No newline at end of file
+</script>
diff --git a/src/views/infra/demo/demo03/inner/components/Demo03GradeList.vue b/src/views/infra/demo/demo03/inner/components/Demo03GradeList.vue
index 96905414..ffd66a6f 100644
--- a/src/views/infra/demo/demo03/inner/components/Demo03GradeList.vue
+++ b/src/views/infra/demo/demo03/inner/components/Demo03GradeList.vue
@@ -1,7 +1,13 @@
 <template>
   <!-- 列表 -->
   <ContentWrap>
-    <el-table v-loading="loading" :data="list" :stripe="true" :show-overflow-tooltip="true">
+    <el-table
+      row-key="id"
+      v-loading="loading"
+      :data="list"
+      :stripe="true"
+      :show-overflow-tooltip="true"
+    >
       <el-table-column label="编号" align="center" prop="id" />
       <el-table-column label="名字" align="center" prop="name" />
       <el-table-column label="班主任" align="center" prop="teacher" />
@@ -17,13 +23,10 @@
 </template>
 <script setup lang="ts">
 import { dateFormatter } from '@/utils/formatTime'
-import * as Demo03StudentApi from '@/api/infra/demo/demo03/inner'
-
-const { t } = useI18n() // 国际化
-const message = useMessage() // 消息弹窗
+import { Demo03StudentApi } from '@/api/infra/demo/demo03/inner'
 
 const props = defineProps<{
-  studentId: undefined // 学生编号（主表的关联字段）
+  studentId?: number // 学生编号（主表的关联字段）
 }>()
 const loading = ref(false) // 列表的加载中
 const list = ref([]) // 列表的数据
@@ -42,14 +45,8 @@ const getList = async () => {
   }
 }
 
-/** 搜索按钮操作 */
-const handleQuery = () => {
-  queryParams.pageNo = 1
-  getList()
-}
-
 /** 初始化 **/
 onMounted(() => {
   getList()
 })
-</script>
\ No newline at end of file
+</script>
diff --git a/src/views/infra/demo/demo03/inner/index.vue b/src/views/infra/demo/demo03/inner/index.vue
index 9b32460a..c58ec39d 100644
--- a/src/views/infra/demo/demo03/inner/index.vue
+++ b/src/views/infra/demo/demo03/inner/index.vue
@@ -1,6 +1,4 @@
 <template>
-  <doc-alert title="代码生成（主子表）" url="https://doc.iocoder.cn/new-feature/master-sub/" />
-
   <ContentWrap>
     <!-- 搜索工作栏 -->
     <el-form
@@ -37,7 +35,7 @@
           start-placeholder="开始日期"
           end-placeholder="结束日期"
           :default-time="[new Date('1 00:00:00'), new Date('1 23:59:59')]"
-          class="!w-240px"
+          class="!w-220px"
         />
       </el-form-item>
       <el-form-item>
@@ -60,13 +58,30 @@
         >
           <Icon icon="ep:download" class="mr-5px" /> 导出
         </el-button>
+        <el-button
+          type="danger"
+          plain
+          :disabled="isEmpty(checkedIds)"
+          @click="handleDeleteBatch"
+          v-hasPermi="['infra:demo03-student:delete']"
+        >
+          <Icon icon="ep:delete" class="mr-5px" /> 批量删除
+        </el-button>
       </el-form-item>
     </el-form>
   </ContentWrap>
 
   <!-- 列表 -->
   <ContentWrap>
-    <el-table v-loading="loading" :data="list" :stripe="true" :show-overflow-tooltip="true">
+    <el-table
+      row-key="id"
+      v-loading="loading"
+      :data="list"
+      :stripe="true"
+      :show-overflow-tooltip="true"
+      @selection-change="handleRowCheckboxChange"
+    >
+      <el-table-column type="selection" width="55" />
       <!-- 子表的列表 -->
       <el-table-column type="expand">
         <template #default="scope">
@@ -102,7 +117,7 @@
         :formatter="dateFormatter"
         width="180px"
       />
-      <el-table-column label="操作" align="center">
+      <el-table-column label="操作" align="center" min-width="120px">
         <template #default="scope">
           <el-button
             link
@@ -137,28 +152,30 @@
 </template>
 
 <script setup lang="ts">
-import { getIntDictOptions, DICT_TYPE } from '@/utils/dict'
+import { DICT_TYPE, getIntDictOptions } from '@/utils/dict'
+import { isEmpty } from '@/utils/is'
 import { dateFormatter } from '@/utils/formatTime'
 import download from '@/utils/download'
-import * as Demo03StudentApi from '@/api/infra/demo/demo03/inner'
+import { Demo03Student, Demo03StudentApi } from '@/api/infra/demo/demo03/inner'
 import Demo03StudentForm from './Demo03StudentForm.vue'
 import Demo03CourseList from './components/Demo03CourseList.vue'
 import Demo03GradeList from './components/Demo03GradeList.vue'
 
+/** 学生 列表 */
 defineOptions({ name: 'Demo03Student' })
 
 const message = useMessage() // 消息弹窗
 const { t } = useI18n() // 国际化
 
 const loading = ref(true) // 列表的加载中
-const list = ref([]) // 列表的数据
+const list = ref<Demo03Student[]>([]) // 列表的数据
 const total = ref(0) // 列表的总页数
 const queryParams = reactive({
   pageNo: 1,
   pageSize: 10,
-  name: null,
-  sex: null,
-  description: null,
+  name: undefined,
+  sex: undefined,
+  description: undefined,
   createTime: []
 })
 const queryFormRef = ref() // 搜索的表单
@@ -207,6 +224,22 @@ const handleDelete = async (id: number) => {
   } catch {}
 }
 
+/** 批量删除学生 */
+const handleDeleteBatch = async () => {
+  try {
+    // 删除的二次确认
+    await message.delConfirm()
+    await Demo03StudentApi.deleteDemo03StudentList(checkedIds.value)
+    message.success(t('common.delSuccess'))
+    await getList()
+  } catch {}
+}
+
+const checkedIds = ref<number[]>([])
+const handleRowCheckboxChange = (records: Demo03Student[]) => {
+  checkedIds.value = records.map((item) => item.id)
+}
+
 /** 导出按钮操作 */
 const handleExport = async () => {
   try {