diff --git a/src/api/global.ts b/src/api/global.ts
index 8d7491c..ebfe748 100644
--- a/src/api/global.ts
+++ b/src/api/global.ts
@@ -111,6 +111,14 @@ export interface UserData {
     port: number | null
     sharing: boolean
   }
+  /** 学生课堂监控投屏状态（getHomePage 返回） */
+  studentScreenShareState?: {
+    classId: string
+    ip: string | null
+    port: number | null
+    sharing: boolean
+    startedAt?: number
+  }
   isTeacher: boolean
   // 是否为可以接受任务的学员
   isTaskStudent: boolean
diff --git a/src/api/subject/studentScreenShare.ts b/src/api/subject/studentScreenShare.ts
new file mode 100644
index 0000000..ecfd708
--- /dev/null
+++ b/src/api/subject/studentScreenShare.ts
@@ -0,0 +1,20 @@
+import { get } from '../request'
+
+export type StudentScreenShareState = {
+  classId: number
+  ip: string
+  lastHeartbeatAt: number
+  port: number
+  sharing: boolean
+  startedAt: number
+  ttlSeconds: number
+}
+
+const studentScreenShareApi = {
+  /** 查询当前班级学生监控投屏状态 */
+  state: async (classId: string) => {
+    return await get<StudentScreenShareState>('/school/studentScreenShare/state', { classId })
+  },
+}
+
+export default studentScreenShareApi
diff --git a/src/hooks/useClassMonitor.ts b/src/hooks/useClassMonitor.ts
index 34b2b63..b73faf6 100644
--- a/src/hooks/useClassMonitor.ts
+++ b/src/hooks/useClassMonitor.ts
@@ -1,3 +1,4 @@
+import studentScreenShareApi from '@/api/subject/studentScreenShare'
 import { $XXL } from '@/utils'
 import { userStore } from '@/stores'
 import { useTips } from './useTips'
@@ -183,6 +184,63 @@ export const handleClassMonitorMessage = (data: anyObj) => {
   return false
 }
 
+const resolveStudentScreenShareClassId = (msg: Record<string, unknown>): string => {
+  if (msg.classId !== undefined && msg.classId !== null && String(msg.classId).trim() !== '') {
+    return String(msg.classId)
+  }
+  const userClassId = userStore().userInfo?.classId
+  if (userClassId !== undefined && userClassId !== null && String(userClassId).trim() !== '') {
+    return String(userClassId)
+  }
+  return ''
+}
+
+/**
+ * 同步 getHomePage 返回的 studentScreenShareState
+ * sharing 为 true 时开启学生监控投屏，否则停止
+ */
+export const syncStudentScreenShareState = async (state: unknown) => {
+  const stateInfo = state && typeof state === 'object' ? (state as Record<string, unknown>) : {}
+  const screenShare = stateInfo.studentScreenShareState
+  if (!screenShare || typeof screenShare !== 'object') return
+
+  const share = screenShare as Record<string, unknown>
+  if (share.sharing !== true) {
+    stopClassMonitor(false)
+    return
+  }
+
+  let msg: anyObj = { ...share }
+  const host = msg.ip !== undefined && msg.ip !== null ? String(msg.ip) : ''
+  const port = Number(msg.port)
+  if (!host || !Number.isFinite(port)) {
+    const classId = resolveStudentScreenShareClassId(msg)
+    if (!classId) return
+    try {
+      const res = await studentScreenShareApi.state(classId)
+      if (!res?.sharing) return
+      msg = { ...msg, ip: res.ip, port: res.port, classId: res.classId ?? classId }
+    } catch (err) {
+      monitorWarn('首页学生监控状态补全失败:', err)
+      return
+    }
+  }
+
+  const sessionKey = getMonitorSessionKey(msg)
+  if (monitorState === 1 && sessionKey && monitorSessionId === sessionKey) {
+    applyStudentShareStart(msg)
+    return
+  }
+
+  stopClassMonitor()
+  monitorSessionId = sessionKey
+  monitorState = 1
+  if (!applyStudentShareStart(msg)) {
+    monitorState = 0
+    monitorSessionId = ''
+  }
+}
+
 export const syncClassMonitorState = (state: unknown) => {
   const stateInfo = state && typeof state === 'object' ? (state as anyObj) : {}
   const nextState = Number(stateInfo.monitorState ?? state)
diff --git a/src/stores/user.ts b/src/stores/user.ts
index f737b99..445762f 100644
--- a/src/stores/user.ts
+++ b/src/stores/user.ts
@@ -8,7 +8,7 @@ import type { Option, UserData } from '@/api/global'
 import type { School } from '@/api/studentManage'
 import { setCache, clearCache, getSN, getManufacturer, isStudyMachine, isWebEvn } from '@/utils'
 import { LogType, useLog, useSocket } from '@/hooks'
-import { syncClassMonitorState } from '@/hooks/useClassMonitor'
+import { syncClassMonitorState, syncStudentScreenShareState } from '@/hooks/useClassMonitor'
 import { syncTeacherScreenShareState } from '@/hooks/useTeacherExplain'
 import { globalStore } from '@/stores'
 import { storeToRefs } from 'pinia'
@@ -108,6 +108,10 @@ export const userStore = defineStore('user', () => {
   const updateUserInfo = async (info: any) => {
     if (!info) return
     const hasMonitorState = Object.prototype.hasOwnProperty.call(info, 'monitorState')
+    const hasStudentScreenShareState = Object.prototype.hasOwnProperty.call(
+      info,
+      'studentScreenShareState',
+    )
     const hasScreenShareState = Object.prototype.hasOwnProperty.call(info, 'screenShareState')
     info = { ...userInfo.value, ...info }
 
@@ -123,6 +127,12 @@ export const userStore = defineStore('user', () => {
       syncClassMonitorState(info)
     }
 
+    if (hasStudentScreenShareState) {
+      syncStudentScreenShareState(info).catch(err => {
+        console.warn('[User] 同步学生监控投屏状态失败:', err)
+      })
+    }
+
     if (hasScreenShareState) {
       syncTeacherScreenShareState(info).catch(err => {
         console.warn('[User] 同步投屏状态失败:', err)