diff --git a/.gitignore b/.gitignore
index e491a4e..4e2f63b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ public/electron/
 pnpm-lock.yaml
 CLAUDE.md
 /public/dist/
+/docs/
diff --git a/frontend/index.html b/frontend/index.html
index 86250ed..4354075 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -4,7 +4,8 @@
     <meta charset="utf-8">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no, maximum-scale=1.0, minimum-scale=1.0" />
-    <title></title>
+    <link rel="icon" type="image/x-icon" href="/favicon.ico">
+    <title>NPQS-9100</title>
     <!-- 优化：vue渲染未完成之前，先加一个css动画 -->
     <style>
       #loadingPage {
diff --git a/frontend/public/favicon.ico b/frontend/public/favicon.ico
new file mode 100644
index 0000000..4da7a78
Binary files /dev/null and b/frontend/public/favicon.ico differ
diff --git a/frontend/src/api/detection/lock.ts b/frontend/src/api/detection/lock.ts
new file mode 100644
index 0000000..84d788f
--- /dev/null
+++ b/frontend/src/api/detection/lock.ts
@@ -0,0 +1,15 @@
+import http from '@/api'
+import type { DetectionLockHolder } from '@/stores/modules/detectionLock'
+
+/**
+ * 查询当前检测锁持有状态
+ * - data 为 null  → 锁空闲
+ * - data 非 null  → 锁被某账号持有
+ *
+ * 本接口只读,不抢锁、不会返回 DETECTION_BUSY
+ */
+export const getCurrentLock = () => {
+    return http.get<DetectionLockHolder | null>('/detection/lock/current', undefined, {
+        loading: false
+    })
+}
diff --git a/frontend/src/api/device/controlSource/index.ts b/frontend/src/api/device/controlSource/index.ts
index b47e9c5..ef0c68f 100644
--- a/frontend/src/api/device/controlSource/index.ts
+++ b/frontend/src/api/device/controlSource/index.ts
@@ -1,6 +1,7 @@
 
 import type { controlSource } from '@/api/device/interface/controlSource'
 import http from '@/api'
+import { useDetectionLockStore } from '@/stores/modules/detectionLock'
 
 /**
  * @name 程控源管理模块
@@ -17,8 +18,11 @@ export const startSimulateTest = (params: controlSource.ResControl) => {
 }
 
 //停止
-export const closeSimulateTest = (params: controlSource.ResControl) => {
-  return http.post(`/prepare/closeSimulateTest`,params,{loading:false})
+export const closeSimulateTest = async (params: controlSource.ResControl) => {
+  const result = await http.post(`/prepare/closeSimulateTest`,params,{loading:false})
+  // 主动终止 → 释放本地持锁标记
+  useDetectionLockStore().clearHolder()
+  return result
 }
 
 
diff --git a/frontend/src/api/index.ts b/frontend/src/api/index.ts
index 8e3092c..bebe843 100644
--- a/frontend/src/api/index.ts
+++ b/frontend/src/api/index.ts
@@ -12,6 +12,12 @@ import { type ResultData } from '@/api/interface'
 import { ResultEnum } from '@/enums/httpEnum'
 import { checkStatus } from './helper/checkStatus'
 import { useUserStore } from '@/stores/modules/user'
+import { useDetectionLockStore, type DetectionLockHolder } from '@/stores/modules/detectionLock'
+import {
+    showForceReleasedDialog,
+    showLockBusyDialog,
+    showLockNotStartedToast
+} from '@/utils/detectionLockDialog'
 import router from '@/routers'
 import { refreshToken } from '@/api/user/login'
 import { EventSourcePolyfill } from 'event-source-polyfill'
@@ -107,6 +113,32 @@ class RequestHttp {
                     }
                     return Promise.reject(data)
                 }
+                // 单用户检测互斥:命中 DETECTION_BUSY 时根据 data 和本地持锁状态分发到 4 种文案
+                if (data.code === ResultEnum.DETECTION_BUSY) {
+                    const lockStore = useDetectionLockStore()
+                    const holder = (data.data ?? null) as DetectionLockHolder | null
+                    const currentUserId = userStore.userInfo?.id
+                    const localDetecting = lockStore.iAmHolder
+
+                    if (!localDetecting && holder) {
+                        // S1:他人持锁
+                        showLockBusyDialog(holder)
+                    } else if (!localDetecting && !holder) {
+                        // S2:未开始检测就调中间接口
+                        showLockNotStartedToast()
+                    } else if (localDetecting && holder && holder.holderUserId !== currentUserId) {
+                        // S4-a:被强释 + 别人接手
+                        showForceReleasedDialog(holder)
+                        lockStore.clearHolder()
+                    } else if (localDetecting && !holder) {
+                        // S4-b:被强释,无人接手
+                        showForceReleasedDialog(null)
+                        lockStore.clearHolder()
+                    }
+                    // 阻断默认错误提示,不再走下面的 ElMessage.error
+                    return Promise.reject(data)
+                }
+
                 // 全局错误信息拦截（防止下载文件的时候返回数据流，没有 code 直接报错）
                 if (data.code && data.code !== ResultEnum.SUCCESS) {
                     if (data.message.includes('&')) {
diff --git a/frontend/src/api/socket/socket.ts b/frontend/src/api/socket/socket.ts
index c98a8fb..b48f404 100644
--- a/frontend/src/api/socket/socket.ts
+++ b/frontend/src/api/socket/socket.ts
@@ -1,8 +1,12 @@
 import http from '@/api'
+import { useDetectionLockStore } from '@/stores/modules/detectionLock'
 
 
-export const startPreTest = (params) => {
-    return http.post(`/prepare/startPreTest`, params, {loading: false})
+export const startPreTest = async (params) => {
+    const result = await http.post(`/prepare/startPreTest`, params, {loading: false})
+    // 抢锁成功 → 标记本地为持锁者
+    useDetectionLockStore().setAsHolder()
+    return result
 }
 
 export const closePreTest = (params) => {
@@ -37,8 +41,11 @@ export const resumeTest = (params) => {
  * 比对式通道配对
  * @param params
  */
-export const contrastTest = (params: any) => {
-    return http.post(`/prepare/startContrastTest`,params)
+export const contrastTest = async (params: any) => {
+    const result = await http.post(`/prepare/startContrastTest`, params)
+    // 抢锁成功 → 标记本地为持锁者
+    useDetectionLockStore().setAsHolder()
+    return result
 }
 
 export const exportAlignData= () => {
diff --git a/frontend/src/enums/httpEnum.ts b/frontend/src/enums/httpEnum.ts
index 9a85fbe..0ebfae4 100644
--- a/frontend/src/enums/httpEnum.ts
+++ b/frontend/src/enums/httpEnum.ts
@@ -6,6 +6,7 @@ export enum ResultEnum {
   ERROR = 500,
   ACCESSTOKEN_EXPIRED = "A0024",
   OVERDUE = "A0025",
+  DETECTION_BUSY = "A020042",
   TIMEOUT = 30000,
   TYPE = "success"
 }
diff --git a/frontend/src/stores/constant.ts b/frontend/src/stores/constant.ts
index d82b4d6..c11c05a 100644
--- a/frontend/src/stores/constant.ts
+++ b/frontend/src/stores/constant.ts
@@ -19,3 +19,6 @@ export  const  DICT_STORE_KEY = "cn-dictData";
 
 export const CHECK_STORE_KEY = "cn-check";
 
+// pinia中detectionLock store的key
+export const DETECTION_LOCK_STORE_KEY = "cn-detectionLock";
+
diff --git a/frontend/src/stores/modules/detectionLock.ts b/frontend/src/stores/modules/detectionLock.ts
new file mode 100644
index 0000000..68f44ce
--- /dev/null
+++ b/frontend/src/stores/modules/detectionLock.ts
@@ -0,0 +1,33 @@
+import { defineStore } from 'pinia'
+import { DETECTION_LOCK_STORE_KEY } from '@/stores/constant'
+
+export interface DetectionLockHolder {
+    holderUserId: string
+    holderUserName: string
+    acquireTime: string
+    expireAt: string
+}
+
+export const useDetectionLockStore = defineStore(DETECTION_LOCK_STORE_KEY, {
+    state: () => ({
+        iAmHolder: false,
+        holder: null as DetectionLockHolder | null
+    }),
+    actions: {
+        setAsHolder(holder?: Partial<DetectionLockHolder> | null) {
+            this.iAmHolder = true
+            if (holder) {
+                this.holder = {
+                    holderUserId: holder.holderUserId ?? '',
+                    holderUserName: holder.holderUserName ?? '',
+                    acquireTime: holder.acquireTime ?? '',
+                    expireAt: holder.expireAt ?? ''
+                }
+            }
+        },
+        clearHolder() {
+            this.iAmHolder = false
+            this.holder = null
+        }
+    }
+})
diff --git a/frontend/src/utils/detectionLockDialog.ts b/frontend/src/utils/detectionLockDialog.ts
new file mode 100644
index 0000000..f818425
--- /dev/null
+++ b/frontend/src/utils/detectionLockDialog.ts
@@ -0,0 +1,72 @@
+import { ElMessage, ElMessageBox } from 'element-plus'
+import type { DetectionLockHolder } from '@/stores/modules/detectionLock'
+
+/**
+ * S1:他人正在做检测,自己抢锁被挡
+ */
+export const showLockBusyDialog = (holder: DetectionLockHolder) => {
+    ElMessageBox.confirm(
+        `「${holder.holderUserName}」正在做检测,请稍后。`,
+        '检测进行中',
+        {
+            confirmButtonText: '观看检测视频教学',
+            cancelButtonText: '我知道了',
+            type: 'warning',
+            distinguishCancelAndClose: true,
+            customClass: 'detection-lock-busy-dialog'
+        }
+    )
+        .then(() => {
+            // 视频教学跳转 URL 暂未配置,先用 Toast 兜底
+            ElMessage.info('视频教学功能开发中,敬请期待')
+        })
+        .catch(() => {
+            // 用户点了"我知道了"或关闭,什么都不做
+        })
+}
+
+/**
+ * S2:未开始检测就调中间接口
+ */
+export const showLockNotStartedToast = () => {
+    ElMessage.warning('请先点击"开始检测"按钮启动本轮检测')
+}
+
+/**
+ * S3:自己暂停超 10 分钟,被 WS 推 STOP_TIMEOUT 强制结束
+ */
+export const showPauseTimeoutDialog = () => {
+    ElMessageBox.alert('暂停超过 10 分钟未恢复,系统已自动结束本次检测。\n\n如需继续,请重新发起检测。', '本次检测已结束', {
+        confirmButtonText: '我知道了',
+        type: 'warning'
+    }).catch(() => {})
+}
+
+/**
+ * S4:被管理员强制释放
+ * - holder 为 null  → 强释后无人接手
+ * - holder 非 null → 强释后被别人立刻抢占
+ */
+export const showForceReleasedDialog = (holder: DetectionLockHolder | null) => {
+    if (holder) {
+        ElMessageBox.confirm(
+            `当前「${holder.holderUserName}」正在做检测,您无法继续检测,请稍后。`,
+            '检测已被中止',
+            {
+                confirmButtonText: '观看检测视频教学',
+                cancelButtonText: '我知道了',
+                type: 'warning',
+                distinguishCancelAndClose: true
+            }
+        )
+            .then(() => {
+                ElMessage.info('视频教学功能开发中,敬请期待')
+            })
+            .catch(() => {})
+    } else {
+        ElMessageBox.alert('您的检测已被管理员强制结束。\n如需继续,请重新发起检测。', '检测已被中止', {
+            confirmButtonText: '我知道了',
+            type: 'warning'
+        }).catch(() => {})
+    }
+}
diff --git a/frontend/src/utils/webSocketClient.ts b/frontend/src/utils/webSocketClient.ts
index 0490933..f240086 100644
--- a/frontend/src/utils/webSocketClient.ts
+++ b/frontend/src/utils/webSocketClient.ts
@@ -9,6 +9,8 @@
 
 import { ElMessage } from "element-plus";
 import { jwtUtil } from "./jwtUtil";
+import { useDetectionLockStore } from "@/stores/modules/detectionLock";
+import { showPauseTimeoutDialog } from "@/utils/detectionLockDialog";
 
 // ============================================================================
 // 类型定义 (Types & Interfaces)
@@ -190,8 +192,8 @@ export default class SocketService {
      * WebSocket连接配置
      */
     private config: SocketConfig = {
-        url: 'ws://127.0.0.1:7778/hello',
-        //url: 'ws://192.168.1.124:7777/hello',
+        // url: 'ws://127.0.0.1:7778/hello',
+        url: 'ws://127.0.0.1:7777/hello',
         heartbeatInterval: 9000,        // 9秒心跳间隔
         reconnectDelay: 5000,           // 5秒重连延迟
         maxReconnectAttempts: 5,        // 最多重连5次
@@ -546,6 +548,18 @@ export default class SocketService {
             // 检查是否为JSON格式
             if (typeof event.data === 'string' && (event.data.startsWith('{') || event.data.startsWith('['))) {
                 const message: WebSocketMessage = JSON.parse(event.data);
+
+                // 全局拦截:暂停 10 分钟超时,后端推 STOP_TIMEOUT 表示锁已被释放
+                // 不管页面是否注册了对应回调,都要做"清本地持锁标记 + 弹窗告知"
+                if (message?.operateCode === 'STOP_TIMEOUT') {
+                    try {
+                        useDetectionLockStore().clearHolder();
+                        showPauseTimeoutDialog();
+                    } catch (e) {
+                        console.error('STOP_TIMEOUT 全局处理失败:', e);
+                    }
+                }
+
                 if (message?.type && this.callBackMapping[message.type]) {
                     this.callBackMapping[message.type](message);
                 } else {