diff --git a/src/renderer/src/AixPPTist/src/App.vue b/src/renderer/src/AixPPTist/src/App.vue
index 74c4b73..7fe9cd8 100644
--- a/src/renderer/src/AixPPTist/src/App.vue
+++ b/src/renderer/src/AixPPTist/src/App.vue
@@ -74,8 +74,6 @@ const initLoad: Function = () => {
       !!(opt.ratio??null) && slidesStore.setViewportRatio(opt.ratio)// 有比例配置项
     }
     return PPTApi.getSlideList(resource.id)
-    // PPTApi.updateWorkList()
-    // return Promise.resolve()
   }
   return Promise.resolve()
 }
diff --git a/src/renderer/src/AixPPTist/src/api/index.ts b/src/renderer/src/AixPPTist/src/api/index.ts
index a82ffc4..5e5bcb6 100644
--- a/src/renderer/src/AixPPTist/src/api/index.ts
+++ b/src/renderer/src/AixPPTist/src/api/index.ts
@@ -50,6 +50,8 @@ export class Utils {
       }, delay)
     }
   }
+  // 延时
+  static sleep = ms => new Promise(resolve => setTimeout(resolve, ms))
 }
 
 /** ppt相关后端接口处理 */
@@ -84,6 +86,12 @@ export class PPTApi {
         slidesStore.setWorkItem(workItem)
         // 没有上课时调用-作业列表
         if(!classcourse) this.updateWorkList()
+        // 没有上课时调用-批量更新缩略图
+        if(!classcourse) {
+          Utils.sleep(1500).then(() => {
+            this.batchUpdateThumUrl()
+          })
+        }
         resolve(true)
       } else msgUtils.msgError(res.msg || '获取数据失败');resolve(false)
     })
@@ -233,13 +241,20 @@ export class PPTApi {
 
   // 批量更新缩略图-异步
   static batchUpdateThumUrl() {
-    return new Promise(async resolve => {
+    return nextTick().then(async () => {
       const list = slidesStore.workItem || []
-      if (!list.length) return resolve()
+      if (!list.length) return
       const upList = []
       for (const [ind,o] of list.entries()) {
-        const thumUrl = await this.getSlideThumUrl(ind)
+        const isCreate = !o.fileurl // 是否创建
+        if (isCreate) {
+          const thumUrl = await this.getSlideThumUrl(ind)
+          upList.push({ id: o.id, fileurl: thumUrl })
+        }
       }
+      if (!upList.length) return
+      // 批量更新
+      return await API_entpcoursefile.batchUpdateNew(upList)
     })
   }
 
diff --git a/src/renderer/src/AixPPTist/src/api/types.ts b/src/renderer/src/AixPPTist/src/api/types.ts
index 3678ed4..0beb5ef 100644
--- a/src/renderer/src/AixPPTist/src/api/types.ts
+++ b/src/renderer/src/AixPPTist/src/api/types.ts
@@ -126,6 +126,8 @@ export class MsgEnum {
     MSG_homework : 'HOMEWORK',
     /** @desc: 公屏 - 课堂作业|活动 */
     MSG_pushSreen_work : 'pushSreen_work',
+    /** @desc: 公屏 - 实验 */
+    MSG_pushSreen_experiment : 'pushSreen_experiment',
     /** @desc: 点赞 */
     MSG_dz : 'dz',
     /** @desc: 疑惑 */
diff --git a/src/renderer/src/AixPPTist/src/api/watcher.ts b/src/renderer/src/AixPPTist/src/api/watcher.ts
index 34c3294..005aef2 100644
--- a/src/renderer/src/AixPPTist/src/api/watcher.ts
+++ b/src/renderer/src/AixPPTist/src/api/watcher.ts
@@ -10,6 +10,7 @@ import { MsgEnum } from './types' // 消息枚举
 import ChatWs from '@/plugins/socket' // 聊天socket
 import Classcourse from './classcourse' // 课程相关
 import msgUtils from '@/plugins/modal' // 消息工具
+import * as dialogUtils from '@/utils/dialog' // 弹窗-函数
 import { Homework } from './index' // api-作业相关
 // import emitter from '@/utils/mitt' //mitt 事件总线
 import useExecPlay from '../views/Screen/hooks/useExecPlay' // 播放控制
@@ -114,6 +115,10 @@ export default () => {
           if (!content.id) return
           Homework.showHomework(content.id)
           break
+        case MsgEnum.HEADS.MSG_pushSreen_experiment: // 打开实验:
+          if (!content.url) return
+          dialogUtils.openLink(content.url)
+          break
         case MsgEnum.HEADS.MSG_closed: // 下课:
           close()
           break
@@ -137,4 +142,4 @@ export default () => {
       window.close() // 关闭窗口
     }, 1000)
   }
-}
+}
\ No newline at end of file
diff --git a/src/renderer/src/plugins/imChat/msgEnum.js b/src/renderer/src/plugins/imChat/msgEnum.js
index a83fed7..42458a2 100644
--- a/src/renderer/src/plugins/imChat/msgEnum.js
+++ b/src/renderer/src/plugins/imChat/msgEnum.js
@@ -100,6 +100,8 @@ export class MsgEnum {
     MSG_homework : 'HOMEWORK',
     /** @desc: 公屏 - 课堂作业|活动 */
     MSG_pushSreen_work : 'pushSreen_work',
+    /** @desc: 公屏 - 实验 */
+    MSG_pushSreen_experiment : 'pushSreen_experiment',
     /** @desc: 点赞 */
     MSG_dz : 'dz',
     /** @desc: 疑惑 */
diff --git a/src/renderer/src/utils/dialog.js b/src/renderer/src/utils/dialog.js
new file mode 100644
index 0000000..66b41d3
--- /dev/null
+++ b/src/renderer/src/utils/dialog.js
@@ -0,0 +1,49 @@
+/**
+ * 弹窗-函数
+ */
+import { h, render } from 'vue'
+import { ElDialog } from 'element-plus'
+
+// 打开弹窗-函数
+export const openDialog = (option, content) => {
+  let vNode
+  const body = document.body
+  const dOpts = {
+    modelValue: true,
+    width: 800,
+    height: 600,
+    title: '添加-超连接',
+    draggable: true,
+    'onUpdate:modelValue': val => {
+      if (vNode && !val) render(null, body)
+    },
+    ...option
+  }
+  vNode = h(ElDialog, dOpts, {
+    default: typeof content == 'function' ? content(h) : content
+  })
+  render(vNode, body)
+}
+
+// 打开链接
+export const openLink = (option, title) => {
+  // https://phet.colorado.edu/sims/html/number-play/latest/number-play_zh_CN.html
+  const isStr = typeof option == 'string'
+  const opt = isStr ? {} : option
+  const url = isStr ? option : option?.url || option?.src || option?.href
+  const titleNew = isStr? title||'实验室' : option?.title || '添加-超连接'
+  openDialog({
+    title: titleNew,
+    ...opt
+  }, (h) => {
+    return h('iframe', {
+      src: url,
+      width: '100%',
+      style: {
+        height: 'calc(80vh - 75px)',
+      },
+      scrolling: 'no',
+      frameborder: '0',
+    })
+  })
+}
\ No newline at end of file
diff --git a/src/renderer/src/views/classTask/teachClassTask.vue b/src/renderer/src/views/classTask/teachClassTask.vue
index 83b5ec9..0d1afe6 100644
--- a/src/renderer/src/views/classTask/teachClassTask.vue
+++ b/src/renderer/src/views/classTask/teachClassTask.vue
@@ -721,19 +721,23 @@ const msgHandle = (msg) => {
     const { head, content, ...other } = msg
     switch(head) {
       case MsgEnum.HEADS.MSG_closed: // 下课:
-          Homework.win = null
-          window.close() // 关闭窗口
-      break 
+        Homework.win = null
+        window.close() // 关闭窗口
+        break 
       case MsgEnum.HEADS.MSG_finishHomework: // 跟新作业:
         console.log('更新作业', head, content)
         const data = JSON.parse(localStorage.getItem('teachClassWorkItem'));
         openDialog(data, false);
-      break
+        break
       case MsgEnum.HEADS.MSG_slideFlapping: // 切换页面
         console.log('切换页面-关闭窗口')
         Homework.win = null
         window.close() // 关闭窗口
-      break
+        break
+      case MsgEnum.HEADS.MSG_pushSreen_experiment: // 实验:
+        Homework.win = null
+        window.close() // 关闭窗口
+        break
       // case 'TIMAddRecvNewMsgCallback': // 收到新消息 data=[]
       //   {
       //     (data||[]).forEach(o => {