diff --git a/src/renderer/src/AixPPTist/src/api/index.ts b/src/renderer/src/AixPPTist/src/api/index.ts
index 203ba3e..a82ffc4 100644
--- a/src/renderer/src/AixPPTist/src/api/index.ts
+++ b/src/renderer/src/AixPPTist/src/api/index.ts
@@ -59,6 +59,7 @@ export class PPTApi {
 
   // 获取所有幻灯片列表 isUpdate为true不更新
   static getSlideList(parentid: (Number | String),isUpdate?:Boolean): Promise<Boolean> {
+    const classcourse = sessionStore.get('curr.classcourse') // 课堂信息
     return new Promise(async (resolve, reject) => {
       const params: object = { parentid, orderByColumn: 'fileidx', isAsc: 'asc', pageSize: 9999 }
       const res: Result = await API_entpcoursefile.listEntpcoursefileNew(params)
@@ -79,12 +80,10 @@ export class PPTApi {
         // 活动列表处理
         // const workList = (res.rows || []).map(o => o.activityContent)
         const workItem = res.rows ? [...res.rows] : []
-        // 写入作业列表数据
-        // slidesStore.setWorkList(workList)
         // 获取所有的pptlist的数据
         slidesStore.setWorkItem(workItem)
-
-        this.updateWorkList()
+        // 没有上课时调用-作业列表
+        if(!classcourse) this.updateWorkList()
         resolve(true)
       } else msgUtils.msgError(res.msg || '获取数据失败');resolve(false)
     })
@@ -232,10 +231,22 @@ export class PPTApi {
     })
   }
 
+  // 批量更新缩略图-异步
+  static batchUpdateThumUrl() {
+    return new Promise(async resolve => {
+      const list = slidesStore.workItem || []
+      if (!list.length) return resolve()
+      const upList = []
+      for (const [ind,o] of list.entries()) {
+        const thumUrl = await this.getSlideThumUrl(ind)
+      }
+    })
+  }
+
   // thumbnail-slide thumbnail 缩略图
-  static getSlideThumUrl(): Promise<Boolean> {
+  static getSlideThumUrl(index?:number): Promise<Boolean> {
     return nextTick().then(async() => {
-      const slideIndex = slidesStore.slideIndex
+      const slideIndex = index ?? slidesStore.slideIndex
       const elements = document.querySelectorAll('.thumbnail-slide')
       if (elements.length && slideIndex >= 0) {
         const element = elements[slideIndex]
diff --git a/src/renderer/src/AixPPTist/src/views/Screen/BaseView.vue b/src/renderer/src/AixPPTist/src/views/Screen/BaseView.vue
index 8e7acf0..7d24e8c 100644
--- a/src/renderer/src/AixPPTist/src/views/Screen/BaseView.vue
+++ b/src/renderer/src/AixPPTist/src/views/Screen/BaseView.vue
@@ -36,8 +36,8 @@
     </div>
     <div 
       class="tools-right" :class="{ 'visible': rightToolsVisible }" 
-      @mouseleave="rightToolsVisible = false"
-      @mouseenter="rightToolsVisible = true"
+      @mouseleave="toolTrigger('leave')"
+      @mouseenter="toolTrigger('enter')"
     >
       <div class="content">
         <div class="tool-btn page-number" @click="slideThumbnailModelVisible = true">幻灯片 {{slideIndex + 1}} / {{slides.length}}</div>
@@ -50,6 +50,10 @@
         <IconPower class="tool-btn" v-tooltip="'结束放映'" @click="exitScreening()" />
         <IconPower class="tool-btn close" v-if="chat.groupid" v-tooltip="'结束课堂'" @click="exitCourse()" />
       </div>
+      <div :class="['tools-icon',{opacity:iconHide}]" @click.stop="toolTrigger('icon')">
+        <circle-double-down v-if="rightToolsVisible" theme="outline" size="30" fill="#409EFF"/>
+        <circle-double-up v-else="!rightToolsVisible" theme="outline" size="30" fill="#E6A23C"/>
+      </div>
     </div>
   </div>
 </template>
@@ -71,6 +75,7 @@ import WritingBoardTool from './WritingBoardTool.vue'
 import CountdownTimer from './CountdownTimer.vue'
 import emitter from '@/utils/mitt';
 import Chat from '../../api/chat' // 聊天
+import { CircleDoubleDown, CircleDoubleUp } from '@icon-park/vue-next' // icon-park 图标库
 
 const props = defineProps<{
   changeViewMode: (mode: 'base' | 'presenter') => void
@@ -103,12 +108,15 @@ const { exitScreening } = useScreening()
 const { fullscreenState, manualExitFullscreen } = useFullscreen()
 const chat:any = Chat() // 聊天室
 
+const screenStore =useScreenStore()
 const rightToolsVisible = ref(false)
 const writingBoardToolVisible = ref(false)
 const timerlVisible = ref(false)
 const slideThumbnailModelVisible = ref(false)
 const laserPen = ref(false)
-const screenStore =useScreenStore()
+const timer = ref(0) // 记录操作时间
+const iconHide = ref(false) // 工具栏图标是否显示
+const timerId = ref(null) // 定时器id
 const contextmenus = (): ContextmenuItem[] => {
   return [
     {
@@ -191,6 +199,30 @@ const contextmenus = (): ContextmenuItem[] => {
   ]
 }
 
+const toolTrigger = (type:string) => {
+  const curT = Date.now()
+  if (curT - timer.value < 200) return
+  iconHide.value = false // 显示图标按钮
+  if (timerId.value) clearTimeout(timerId.value) // 清除定时器
+  switch (type) {
+    case 'icon': // 点击图标
+      timer.value = curT
+      rightToolsVisible.value = !rightToolsVisible.value
+      break
+    case 'enter': // 移入
+      timer.value = curT
+      rightToolsVisible.value = true
+      break
+    case 'leave': // 移出
+      rightToolsVisible.value = false
+      break
+    default:
+      break
+  }
+  timerId.value = setTimeout(() => { // 定时器
+    iconHide.value = true // 隐藏图标按钮
+  }, 2000)
+}
 // 下课
 const exitCourse = async () => {
   // console.log('下课', chat)
@@ -253,6 +285,18 @@ const exitCourse = async () => {
     top: -66px;
   }
 
+  .tools-icon{
+    position: absolute;
+    right: 8px;
+    top: -35px;
+    z-index: 1;
+    cursor: pointer;
+    transition: opacity $transitionDelay;
+    &.opacity{
+      opacity: .35;
+    }
+  }
+
   .content {
     width: 100%;
     height: 100%;
diff --git a/src/renderer/src/views/prepare/index.vue b/src/renderer/src/views/prepare/index.vue
index 8091696..2196474 100644
--- a/src/renderer/src/views/prepare/index.vue
+++ b/src/renderer/src/views/prepare/index.vue
@@ -194,7 +194,7 @@ import outLink from '@/utils/linkConfig'
 import { createWindow, sessionStore, getAppInstallUrl, ipcMsgSend } from '@/utils/tool'
 import { cloneDeep } from 'lodash'
 import { delClasswork, listEntpcourse } from '@/api/teaching/classwork'
-import { updateClasscourse } from '@/api/teaching/classcourse'
+import { updateClasscourse, getClasscourse } from '@/api/teaching/classcourse'
 import { getClassInfo, getSelfReserv, endClass } from '@/api/classManage'
 import { useGetHomework } from '@/hooks/useGetHomework'
 import { editListItem } from '@/hooks/useClassTask'
@@ -389,12 +389,13 @@ export default {
           if (res.code == 200) {
             const resource = res.data
             if (resource.filetype != 'aippt') this.$refs.calssRef.open(aptFileId, row)
-            else {
+            else { // aippt 继续上课
               if (!!sessionStore.get('curr.classcourse')) return ElMessage.warning('公屏已打开，请勿重复操作')
+              const { data:classcourse } = await getClasscourse(row.id) // 获取最新课堂信息
               const msgEl = ElMessage.warning({message:'正在打开公屏，请稍后...',duration: 0})
               setTimeout(()=>{
                 msgEl.close()
-                this.openPublicScreen('class', resource, row) // 打开公屏-窗口
+                this.openPublicScreen('class', resource, classcourse||row) // 打开公屏-窗口
               }, 2000)
             }
           } else ElMessage.error(res.msg||'获取课件信息失败')