diff --git a/web/src/pages/ReviewPage.vue b/web/src/pages/ReviewPage.vue
index 6bf9f37..4689479 100644
--- a/web/src/pages/ReviewPage.vue
+++ b/web/src/pages/ReviewPage.vue
@@ -1,14 +1,17 @@
 <script setup lang="ts">
-// 评阅一个作业：左边是全班学生（提交状态、自动评分、老师评分），右边是选中学生的代码和界面截图、自动评分结果、
-// 规范提示、AI 建议和老师评分。"运行他的程序"在新标签页的实验页里打开学生的代码。
+// 评阅一个作业：左边是全班学生（提交状态、自动评分、老师评分），右边是选中学生的界面截图、运行区、代码，
+// 以及自动评分结果、规范提示、AI 建议和老师评分。"运行"标签页里直接运行学生的程序（换学生时自动停止）；
+// "在新标签页运行"打开完整的实验页，地方更大。
 // AI 建议只是参考：老师采纳（或修改后保存）才成为老师评分，学生才能看到。
-import { computed, onBeforeUnmount, onMounted, ref, watch } from 'vue'
+import { computed, nextTick, onBeforeUnmount, onMounted, ref, watch } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { NButton, NEmpty, NInput, NInputNumber, NSpin, NTab, NTabs, NTag, useDialog, useMessage } from 'naive-ui'
 import type { AiReview, Assignment, Review, Screenshot, SourceFile, Submission } from '@iot/shared'
 import { api } from '../api'
 import { currentUser, logout } from '../auth'
 import CodeEditor from '../editor/CodeEditor.vue'
+import RunArea from '../run/RunArea.vue'
+import { createRunSession } from '../run/session'
 import GradeResultView from '../grading/GradeResultView.vue'
 import { conventionHints } from '@iot/shared'
 import { downloadCsv } from '../teacher/csv'
@@ -39,8 +42,9 @@ interface Detail {
   submissionCount: number
 }
 
-/** 代码区"界面截图"标签页的名字（不会和文件名冲突） */
+/** 代码区"界面截图""运行"标签页的名字（不会和 .cs 文件名冲突） */
 const SCREENS = '界面截图'
+const RUN = '运行'
 
 const props = defineProps<{ assignmentId: string }>()
 const route = useRoute()
@@ -48,6 +52,27 @@ const router = useRouter()
 const message = useMessage()
 const dialog = useDialog()
 
+// ---------- 运行学生的程序 ----------
+const session = createRunSession()
+const editorRef = ref<InstanceType<typeof CodeEditor>>()
+const runState = session.state
+const running = computed(() => runState.status === 'compiling' || runState.status === 'running')
+const STATUS_TEXT = { idle: '未运行', compiling: '编译中…', running: '运行中', stopped: '已停止' } as const
+
+function runProgram() {
+  if (!detail.value?.files || running.value) return
+  void session.run(detail.value.files.map((f) => ({ ...f })))
+}
+
+/** 点编译错误：切到对应文件并跳到出错的行 */
+async function showDiagnostic(file: string, line: number, column: number) {
+  activeFile.value = file
+  await nextTick()
+  editorRef.value?.reveal(file, line, column)
+}
+
+onBeforeUnmount(() => session.close())
+
 const assignment = ref<Assignment | null>(null)
 const rows = ref<Row[]>([])
 const selectedId = ref<number>()
@@ -88,6 +113,14 @@ onMounted(async () => {
 
 async function select(userId: number | undefined) {
   if (userId === undefined) return
+  // 换学生：停掉上一个学生的程序，清空运行区
+  if (running.value) await session.stop()
+  runState.forms = []
+  runState.messageBoxes = []
+  runState.diagnostics = []
+  runState.errors = []
+  runState.console = ''
+  const wasRunTab = activeFile.value === RUN
   selectedId.value = userId
   void router.replace({ query: { student: userId } })
   detail.value = await api<Detail>('GET', `/api/teacher/assignments/${props.assignmentId}/students/${userId}`).catch((e: Error) => {
@@ -97,10 +130,12 @@ async function select(userId: number | undefined) {
   const manual = assignment.value?.scoring.manual ?? []
   scores.value = manual.map((_, i) => detail.value?.review?.scores[i] ?? null)
   comment.value = detail.value?.review?.comment ?? ''
-  // 默认先看界面截图，没有截图时看第一个窗体的代码
-  activeFile.value = detail.value?.screenshots.length
-    ? SCREENS
-    : (codeFiles.value.find((f) => !f.path.endsWith('.Designer.cs') && f.path !== 'Program.cs')?.path ?? codeFiles.value[0]?.path)
+  // 正在看"运行"时换学生，留在"运行"；否则默认先看界面截图，没有截图时看第一个窗体的代码
+  activeFile.value = wasRunTab
+    ? RUN
+    : detail.value?.screenshots.length
+      ? SCREENS
+      : (codeFiles.value.find((f) => !f.path.endsWith('.Designer.cs') && f.path !== 'Program.cs')?.path ?? codeFiles.value[0]?.path)
   pollAi()
 }
 
@@ -191,7 +226,7 @@ async function go(step: 1 | -1) {
   message.info(step > 0 ? '后面没有已提交的学生了' : '前面没有已提交的学生了')
 }
 
-function runProgram() {
+function openRunPage() {
   if (detail.value?.submission) window.open(router.resolve(`/teacher/submissions/${detail.value.submission.id}/run`).href, '_blank')
 }
 
@@ -280,7 +315,7 @@ async function signOut() {
           <span class="spacer" />
           <NButton size="small" @click="go(-1)">上一个</NButton>
           <NButton size="small" @click="go(1)">下一个</NButton>
-          <NButton size="small" type="primary" :disabled="!detail.submission" @click="runProgram">运行他的程序</NButton>
+          <NButton size="small" :disabled="!detail.submission" title="在新标签页里打开完整的实验页，地方更大" @click="openRunPage">在新标签页运行</NButton>
         </div>
 
         <NEmpty v-if="!detail.submission" description="还没有提交" class="empty" />
@@ -288,6 +323,7 @@ async function signOut() {
           <div class="code">
             <NTabs :value="activeFile" type="card" size="small" @update:value="(v: string) => (activeFile = v)">
               <NTab v-if="detail.screenshots.length" :name="SCREENS">{{ SCREENS }}</NTab>
+              <NTab :name="RUN">▶ {{ RUN }}</NTab>
               <NTab v-for="f in codeFiles" :key="f.path" :name="f.path">{{ f.path }}</NTab>
             </NTabs>
             <div v-if="activeFile === SCREENS" class="screens">
@@ -296,7 +332,26 @@ async function signOut() {
                 <figcaption>{{ s.form }}</figcaption>
               </figure>
             </div>
-            <CodeEditor v-show="activeFile !== SCREENS" class="editor" :files="codeFiles" :active-file="activeFile" :diagnostics="[]" read-only />
+            <div v-show="activeFile === RUN" class="run-pane">
+              <div class="run-bar">
+                <NButton size="small" type="primary" :disabled="running" @click="runProgram">▶ 运行</NButton>
+                <NButton size="small" :disabled="!running" @click="session.stop">■ 停止</NButton>
+                <NTag size="small" :type="runState.status === 'running' ? 'success' : runState.status === 'compiling' ? 'warning' : 'default'">
+                  {{ STATUS_TEXT[runState.status] }}
+                </NTag>
+                <span class="muted">运行的是学生提交的代码，可以操作窗体和实训台</span>
+              </div>
+              <RunArea class="run-area-host" :session="session" @diagnostic="showDiagnostic" />
+            </div>
+            <CodeEditor
+              v-show="activeFile !== SCREENS && activeFile !== RUN"
+              ref="editorRef"
+              class="editor"
+              :files="codeFiles"
+              :active-file="activeFile"
+              :diagnostics="runState.diagnostics"
+              read-only
+            />
           </div>
 
           <div class="side">
@@ -463,6 +518,28 @@ async function signOut() {
   font-weight: normal;
 }
 
+.run-pane {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+  border: 1px solid #e5e7eb;
+  border-top: none;
+}
+
+.run-bar {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 6px 8px;
+  border-bottom: 1px solid #f0f0f0;
+}
+
+.run-area-host {
+  flex: 1;
+  min-height: 0;
+}
+
 .screens {
   flex: 1;
   display: flex;
diff --git a/web/src/pages/WorkbenchPage.vue b/web/src/pages/WorkbenchPage.vue
index 2edc9af..f799dd3 100644
--- a/web/src/pages/WorkbenchPage.vue
+++ b/web/src/pages/WorkbenchPage.vue
@@ -13,12 +13,10 @@ import CodeEditor from '../editor/CodeEditor.vue'
 import { api } from '../api'
 import { currentUser, logout } from '../auth'
 import { deleteWork, loadWork, sampleWorkKey, saveWork } from '../editor/works'
+import RunArea from '../run/RunArea.vue'
 import { createRunSession } from '../run/session'
 import GradeResultView from '../grading/GradeResultView.vue'
 import { captureForms } from '../grading/screenshots'
-import TrainingBoard from '../scene/TrainingBoard.vue'
-import FormWindow from '../winforms/FormWindow.vue'
-import MessageBoxDialog from '../winforms/MessageBoxDialog.vue'
 
 const props = defineProps<{ assignmentId?: string; submissionId?: string }>()
 
@@ -91,7 +89,10 @@ function onKeyDown(event: KeyboardEvent) {
 }
 
 onMounted(() => window.addEventListener('keydown', onKeyDown, { capture: true }))
-onBeforeUnmount(() => window.removeEventListener('keydown', onKeyDown, { capture: true }))
+onBeforeUnmount(() => {
+  window.removeEventListener('keydown', onKeyDown, { capture: true })
+  session.close()
+})
 
 onMounted(async () => {
   // 一打开页面就连接服务器，实训台在运行程序之前就能显示和调节
@@ -473,40 +474,7 @@ function run() {
         />
       </section>
 
-      <section class="run-area">
-        <div class="desktop">
-          <FormWindow
-            v-for="(form, index) in state.forms"
-            :key="form.root.id"
-            :form="form.root"
-            :modal="form.modal"
-            :offset="index"
-            :act="session.act"
-          />
-          <MessageBoxDialog
-            v-for="box in state.messageBoxes"
-            :key="box.requestId"
-            :box="box"
-            @reply="session.replyMessageBox(box.requestId, $event)"
-          />
-          <div v-if="state.forms.length === 0" class="desktop-hint">点击"运行"后，学生程序的窗体会显示在这里</div>
-        </div>
-        <TrainingBoard :board="state.board" @set="session.setBoard" @reset="session.resetBoard" />
-        <div class="output">
-          <div
-            v-for="(d, i) in state.diagnostics"
-            :key="`d${i}`"
-            :class="['diag', d.severity]"
-            title="点击跳到出错的代码"
-            @click="showDiagnostic(d.file, d.line, d.column)"
-          >
-            {{ d.file }}({{ d.line }},{{ d.column }}) {{ d.code }}：{{ d.message }}
-            <div v-if="d.hint" class="hint">提示：{{ d.hint }}</div>
-          </div>
-          <pre v-for="(e, i) in state.errors" :key="`e${i}`" class="error">{{ e }}</pre>
-          <pre v-if="state.console" class="console">{{ state.console }}</pre>
-        </div>
-      </section>
+      <RunArea :session="session" @diagnostic="showDiagnostic" />
     </main>
   </div>
 </template>
@@ -623,67 +591,4 @@ function run() {
 .new-form-error {
   color: #dc2626;
 }
-
-.run-area {
-  display: flex;
-  flex-direction: column;
-  gap: 8px;
-  padding: 8px;
-  min-width: 0;
-  overflow: auto;
-}
-
-.desktop {
-  position: relative;
-  flex: 1;
-  min-height: 320px;
-  background: #2d6aa3;
-  border-radius: 4px;
-  /* 窗体比桌面区域大时可以滚动查看 */
-  overflow: auto;
-}
-
-.desktop-hint {
-  position: absolute;
-  inset: 0;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  color: rgb(255 255 255 / 0.7);
-}
-
-.output {
-  max-height: 180px;
-  overflow: auto;
-  font-size: 12px;
-}
-
-.diag {
-  cursor: pointer;
-}
-
-.diag:hover {
-  text-decoration: underline;
-}
-
-.diag.error,
-.error {
-  color: #b91c1c;
-}
-
-.diag.warning {
-  color: #a16207;
-}
-
-.hint {
-  color: #2563eb;
-  padding-left: 1em;
-}
-
-.console {
-  background: #111827;
-  color: #e5e7eb;
-  padding: 6px;
-  margin: 0;
-}
 </style>
diff --git a/web/src/run/RunArea.vue b/web/src/run/RunArea.vue
new file mode 100644
index 0000000..6a2d6da
--- /dev/null
+++ b/web/src/run/RunArea.vue
@@ -0,0 +1,115 @@
+<script setup lang="ts">
+// 运行区：学生程序的窗体（在一块"桌面"上）、提示框、虚拟实训台，以及编译错误和控制台输出。
+// 实验页和老师的评阅页共用。
+import TrainingBoard from '../scene/TrainingBoard.vue'
+import FormWindow from '../winforms/FormWindow.vue'
+import MessageBoxDialog from '../winforms/MessageBoxDialog.vue'
+import type { RunSession } from './session'
+
+const props = defineProps<{ session: RunSession }>()
+const emit = defineEmits<{ diagnostic: [file: string, line: number, column: number] }>()
+
+const state = props.session.state
+</script>
+
+<template>
+  <section class="run-area">
+    <div class="desktop">
+      <FormWindow
+        v-for="(form, index) in state.forms"
+        :key="form.root.id"
+        :form="form.root"
+        :modal="form.modal"
+        :offset="index"
+        :act="session.act"
+      />
+      <MessageBoxDialog
+        v-for="box in state.messageBoxes"
+        :key="box.requestId"
+        :box="box"
+        @reply="session.replyMessageBox(box.requestId, $event)"
+      />
+      <div v-if="state.forms.length === 0" class="desktop-hint">点击"运行"后，学生程序的窗体会显示在这里</div>
+    </div>
+    <TrainingBoard :board="state.board" @set="session.setBoard" @reset="session.resetBoard" />
+    <div class="output">
+      <div
+        v-for="(d, i) in state.diagnostics"
+        :key="`d${i}`"
+        :class="['diag', d.severity]"
+        title="点击跳到出错的代码"
+        @click="emit('diagnostic', d.file, d.line, d.column)"
+      >
+        {{ d.file }}({{ d.line }},{{ d.column }}) {{ d.code }}：{{ d.message }}
+        <div v-if="d.hint" class="hint">提示：{{ d.hint }}</div>
+      </div>
+      <pre v-for="(e, i) in state.errors" :key="`e${i}`" class="error">{{ e }}</pre>
+      <pre v-if="state.console" class="console">{{ state.console }}</pre>
+    </div>
+  </section>
+</template>
+
+<style scoped>
+.run-area {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  padding: 8px;
+  min-width: 0;
+  overflow: auto;
+}
+
+.desktop {
+  position: relative;
+  flex: 1;
+  min-height: 320px;
+  background: #2d6aa3;
+  border-radius: 4px;
+  /* 窗体比桌面区域大时可以滚动查看 */
+  overflow: auto;
+}
+
+.desktop-hint {
+  position: absolute;
+  inset: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: rgb(255 255 255 / 0.7);
+}
+
+.output {
+  max-height: 180px;
+  overflow: auto;
+  font-size: 12px;
+}
+
+.diag {
+  cursor: pointer;
+}
+
+.diag:hover {
+  text-decoration: underline;
+}
+
+.diag.error,
+.error {
+  color: #b91c1c;
+}
+
+.diag.warning {
+  color: #a16207;
+}
+
+.hint {
+  color: #2563eb;
+  padding-left: 1em;
+}
+
+.console {
+  background: #111827;
+  color: #e5e7eb;
+  padding: 6px;
+  margin: 0;
+}
+</style>
diff --git a/web/src/run/session.ts b/web/src/run/session.ts
index 66ca045..df0f2ca 100644
--- a/web/src/run/session.ts
+++ b/web/src/run/session.ts
@@ -187,7 +187,12 @@ export function createRunSession() {
     }
   }
 
-  return { state, connect, run, stop, act, replyMessageBox, setBoard, resetBoard }
+  /** 离开页面时断开连接：服务器随即结束正在运行的程序 */
+  function close() {
+    socket?.close()
+  }
+
+  return { state, connect, run, stop, act, replyMessageBox, setBoard, resetBoard, close }
 }
 
 export type RunSession = ReturnType<typeof createRunSession>