diff --git a/backend/Log/OrbbecSDK.log.txt b/backend/Log/OrbbecSDK.log.txt
index a44ce616..0079a343 100644
Binary files a/backend/Log/OrbbecSDK.log.txt and b/backend/Log/OrbbecSDK.log.txt differ
diff --git a/backend/config.ini b/backend/config.ini
index 08a01276..f718726e 100644
--- a/backend/config.ini
+++ b/backend/config.ini
@@ -50,12 +50,12 @@ synchronized_images_only = False
 
 [DEVICES]
 imu_enabled = True
-imu_device_type = ble
+imu_device_type = mock
 imu_port = COM9
 imu_mac_address = ef:3c:1a:0a:fe:02
 imu_baudrate = 9600
 pressure_enabled = True
-pressure_device_type = real
+pressure_device_type = mock
 pressure_use_mock = False
 pressure_port = COM5
 pressure_baudrate = 115200
diff --git a/backend/main.py b/backend/main.py
index 96c92dd5..663d4906 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -2077,7 +2077,7 @@ def main():
     """主函数"""
     # 解析命令行参数
     parser = argparse.ArgumentParser(description='Body Balance Evaluation System Backend')
-    parser.add_argument('--host', default='0.0.0.0', help='Host address to bind to')
+    parser.add_argument('--host', default='localhost', help='Host address to bind to')
     parser.add_argument('--port', type=int, default=5000, help='Port number to bind to')
     parser.add_argument('--debug', action='store_true', help='Enable debug mode')
     args = parser.parse_args()
diff --git a/frontend/src/renderer/main/main.js b/frontend/src/renderer/main/main.js
index 6fa0f75d..fc338ea0 100644
--- a/frontend/src/renderer/main/main.js
+++ b/frontend/src/renderer/main/main.js
@@ -192,7 +192,8 @@ function createWindow() {
     webPreferences: {
       nodeIntegration: false,
       contextIsolation: true,
-      sandbox: false, // 显式关闭沙盒，避免 preload 加载问题
+      // sandbox: false, // 显式关闭沙盒，避免 preload 加载问题
+      // backgroundThrottling: false,
       preload: path.join(__dirname, 'preload.js')
     },
     icon: path.join(__dirname, '../public/logo.png'),
diff --git a/frontend/src/renderer/main/preload.js b/frontend/src/renderer/main/preload.js
index 8990560c..511db204 100644
--- a/frontend/src/renderer/main/preload.js
+++ b/frontend/src/renderer/main/preload.js
@@ -2,5 +2,5 @@ const { contextBridge, ipcRenderer } = require('electron');
 
 contextBridge.exposeInMainWorld('electronAPI', {
   generateReportPdf: (payload) => ipcRenderer.invoke('generate-report-pdf', payload),
-  getBackendUrl: () => 'http://localhost:5000'
+  getBackendUrl: () => process.env.BACKEND_URL || 'http://localhost:5000',
 });
diff --git a/frontend/src/renderer/src/views/Detection.vue b/frontend/src/renderer/src/views/Detection.vue
index 02842cfa..d7ff8e68 100644
--- a/frontend/src/renderer/src/views/Detection.vue
+++ b/frontend/src/renderer/src/views/Detection.vue
@@ -932,7 +932,7 @@ function connectWebSocket() {
     
     // 创建主Socket.IO连接
     socket = io(BACKEND_URL, {
-      transports: ['websocket', 'polling'],  // 只使用polling，与后端保持一致
+      transports: ['websocket'],
       timeout: 10000,
       forceNew: true,
       reconnection: true,
@@ -942,7 +942,7 @@ function connectWebSocket() {
 
     // 创建统一设备命名空间连接
     devicesSocket = io(BACKEND_URL + '/devices', {
-      transports: ['websocket', 'polling'],  // 只使用polling，与后端保持一致
+      transports: ['websocket'],
       timeout: 10000,
       forceNew: true
     })
@@ -995,9 +995,16 @@ function connectWebSocket() {
     devicesSocket.on('connect', () => {
       console.log('🔗 设备命名空间连接成功')
       
-      // 连接成功后订阅所有设备数据
-      devicesSocket.emit('subscribe_device', { device_type: 'camera1' })
-      devicesSocket.emit('subscribe_device', { device_type: 'camera2' })
+      const enabledCameras = (() => {
+        const list = []
+        const idx1 = String((cameraForm.value && cameraForm.value.camera1 && cameraForm.value.camera1.device_index) || '').trim()
+        const idx2 = String((cameraForm.value && cameraForm.value.camera2 && cameraForm.value.camera2.device_index) || '').trim()
+        if (idx1 !== '') list.push('camera1')
+        if (idx2 !== '') list.push('camera2')
+        if (list.length === 0) list.push('camera1')
+        return list
+      })()
+      enabledCameras.forEach(t => devicesSocket.emit('subscribe_device', { device_type: t }))
       devicesSocket.emit('subscribe_device', { device_type: 'femtobolt' })
       devicesSocket.emit('subscribe_device', { device_type: 'imu' })
       devicesSocket.emit('subscribe_device', { device_type: 'pressure' })
@@ -1033,9 +1040,9 @@ function connectWebSocket() {
       frameCount++
       // 区分 camera1 / camera2 帧
       const devId = (data && data.device_id) ? String(data.device_id).toLowerCase() : ''
-      if (!tempInfo.value.camera_frames) {
-        tempInfo.value.camera_frames = {}
-      }
+     if (!tempInfo.value.camera_frames) {
+       tempInfo.value.camera_frames = {}
+     }
       if (devId === 'camera1') {
         tempInfo.value.camera_frames['camera1'] = data
         tempInfo.value.camera1_frame = data
@@ -1080,15 +1087,15 @@ function connectWebSocket() {
        const { device_type, status } = data
        const statusText = status ? '已连接' : '未连接'
        
-       switch (device_type) {
-         case 'camera1':
-           camera1Status.value = statusText
-           console.log(`📷 相机1状态: ${statusText}`)
-           break
-         case 'camera2':
-           camera2Status.value = statusText
-           console.log(`📷 相机2状态: ${statusText}`)
-           break
+      switch (device_type) {
+        case 'camera1':
+          camera1Status.value = statusText
+          console.log(`📷 相机1状态: ${statusText}`)
+          break
+        case 'camera2':
+          camera2Status.value = statusText
+          console.log(`📷 相机2状态: ${statusText}`)
+          break
          case 'femtobolt':
            femtoboltStatus.value = statusText
            console.log(`🔍 深度相机状态: ${statusText}`)
diff --git a/frontend/src/renderer/src/views/model.vue b/frontend/src/renderer/src/views/model.vue
index d0479f48..b515cd65 100644
--- a/frontend/src/renderer/src/views/model.vue
+++ b/frontend/src/renderer/src/views/model.vue
@@ -41,9 +41,9 @@ function initThreeJS() {
     camera.lookAt(0, 0, 0);
     
     // 创建渲染器
-    renderer = new THREE.WebGLRenderer({ antialias: true,alpha: true  });
+    renderer = new THREE.WebGLRenderer({ antialias: true, alpha: false, powerPreference: 'high-performance' });
     scene.background  = null; // 置空场景背景
-    renderer.setClearColor(0x000000,  0); // 设置透明度为0（完全透明）
+    renderer.setClearColor(0x000000,  0.02);
     renderer.setSize(containermodel.offsetWidth, containermodel.offsetHeight);
     renderer.shadowMap.enabled = true;
     renderer.shadowMap.type = THREE.PCFSoftShadowMap;
diff --git a/frontend/src/renderer/src/views/viewPDF.vue b/frontend/src/renderer/src/views/viewPDF.vue
index fc822feb..58ab0e74 100644
--- a/frontend/src/renderer/src/views/viewPDF.vue
+++ b/frontend/src/renderer/src/views/viewPDF.vue
@@ -20,7 +20,7 @@
 import { patientAPI, detectionAPI,historyAPI,getBackendUrl } from '@/services/api.js'
 
 import { ref, onMounted } from 'vue'
-import * as pdfjsLib from 'pdfjs-dist'
+// import * as pdfjsLib from 'pdfjs-dist'
 const emit = defineEmits([ 'closeViewPDF' ]);
 const props = defineProps({
   pdfUrl: {
@@ -32,7 +32,7 @@ const props = defineProps({
 const pdfUrl = ref(props.pdfUrl)
 const pdfContainer = ref(null) // 容器用于挂载多个 canvas
 // 设置 worker 路径（重要）
-pdfjsLib.GlobalWorkerOptions.workerSrc  = '/pdf.worker.min.js' 
+// pdfjsLib.GlobalWorkerOptions.workerSrc  = '/pdf.worker.min.js' 
 const BACKEND_URL = getBackendUrl()
 const pdfCanvas = ref(null)
  function handleCancel(){
@@ -66,64 +66,42 @@ const pdfCanvas = ref(null)
 //     console.error('Error  rendering PDF:', error)
 //   }
 // }
-const renderPDF = async (url) => {
-  try {
-    // 1️⃣ 加载 PDF 文档
-    const loadingTask = pdfjsLib.getDocument(url) 
-    const pdf = await loadingTask.promise  
-    console.log(`PDF  loaded: ${pdf.numPages}  pages`)
- 
-    // 2️⃣ 清空旧内容 
-    if (pdfContainer.value)  {
-      pdfContainer.value.innerHTML  = ''
-    }
- 
-    const scale = 1.5 // 可根据设备 DPR 动态调整 
-    const pagePromises = []
- 
-    // 3️⃣ 预处理：循环加载每一页（不立即渲染）
-    for (let pageNum = 1; pageNum <= pdf.numPages;  pageNum++) {
-      pagePromises.push(renderPage(pdf,  pageNum, scale))
-    }
- 
-    // 4️⃣ 并行渲染所有页面（注意：大量页面时需节流）
-    await Promise.all(pagePromises) 
-    console.log('✅  All PDF pages rendered successfully')
-  } catch (error) {
-    console.error('❌  Error rendering PDF:', error)
-  }
-}
+// const renderPDF = async (url) => {
+//   try {
+//     const pdfjsLib = await import('pdfjs-dist/legacy/build/pdf')
+//     if (pdfjsLib && pdfjsLib.GlobalWorkerOptions) {
+//       pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdn.jsdelivr.net/npm/pdfjs-dist@3.11.174/build/pdf.worker.min.js'
+//     }
+//     const loadingTask = pdfjsLib.getDocument(url)
+//     const pdf = await loadingTask.promise
+//     if (pdfContainer.value) {
+//       pdfContainer.value.innerHTML = ''
+//     }
+//     const scale = 1.5
+//     const pagePromises = []
+//     for (let pageNum = 1; pageNum <= pdf.numPages; pageNum++) {
+//       pagePromises.push(renderPage(pdf, pageNum, scale))
+//     }
+//     await Promise.all(pagePromises)
+//   } catch (error) {
+//     console.error('Error rendering PDF:', error)
+//   }
+// }
  
 // 单独封装 renderPage 函数便于复用与控制并发
-const renderPage = async (pdf, pageNum, scale) => {
-  const page = await pdf.getPage(pageNum) 
- 
-  // 获取视口（viewport）
-  const viewport = page.getViewport({  scale })
- 
-  // 创建 canvas
-  const canvas = document.createElement('canvas') 
-  const context = canvas.getContext('2d') 
-  canvas.height  = viewport.height 
-  canvas.width  = viewport.width
- 
-
-  // 添加页码标识（可选）
-  const pageNumberDiv = document.createElement('div') 
-  // 插入到容器 
-  if (pdfContainer.value)  {
-    pdfContainer.value.appendChild(canvas) 
-  }
- 
-  // 渲染上下文
-  const renderContext = {
-    canvasContext: context,
-    viewport,
-  }
- 
-  // 执行渲染
-  await page.render(renderContext).promise 
-}
+// const renderPage = async (pdf, pageNum, scale) => {
+//   const page = await pdf.getPage(pageNum)
+//   const viewport = page.getViewport({ scale })
+//   const canvas = document.createElement('canvas')
+//   const context = canvas.getContext('2d')
+//   canvas.height = viewport.height
+//   canvas.width = viewport.width
+//   if (pdfContainer.value) {
+//     pdfContainer.value.appendChild(canvas)
+//   }
+//   const renderContext = { canvasContext: context, viewport }
+//   await page.render(renderContext).promise
+// }
 onMounted(() => {
   // 替换为你的 PDF 文件路径或 URL
   // renderPDF(`${BACKEND_URL}/202512070001/20251209141628/report_142802459.pdf`)  // 可以是本地文件或远程链接
@@ -167,4 +145,4 @@ canvas {
   align-items: center;
   padding-right: 20px;
 }
-</style>
\ No newline at end of file
+</style>
diff --git a/frontend/src/renderer/vite.config.js b/frontend/src/renderer/vite.config.js
index c6b9c5d7..5236fae8 100644
--- a/frontend/src/renderer/vite.config.js
+++ b/frontend/src/renderer/vite.config.js
@@ -24,7 +24,7 @@ export default defineConfig({
   },
   server: {
     port: 3000,
-    host: '0.0.0.0',
+    host: 'localhost',
     // 开发服务器配置
     cors: true,
     strictPort: false