diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index 9c02e1e..9d6bc4e 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -8,6 +8,7 @@ import AppLayout from './components/AppLayout.vue'
 import TitleBar from './components/TitleBar.vue'
 import UpdateModal from './components/UpdateModal.vue'
 import DevDebugPanel from './components/DevDebugPanel.vue'
+import GlobalPowerCountdown from './components/GlobalPowerCountdown.vue'
 import zhCN from 'ant-design-vue/es/locale/zh_CN'
 import { logger } from '@/utils/logger'
 
@@ -49,6 +50,9 @@ onMounted(() => {
 
     <!-- 开发环境调试面板 -->
     <DevDebugPanel />
+
+    <!-- 全局电源倒计时弹窗 -->
+    <GlobalPowerCountdown />
   </ConfigProvider>
 </template>
 
diff --git a/frontend/src/components/GlobalPowerCountdown.vue b/frontend/src/components/GlobalPowerCountdown.vue
new file mode 100644
index 0000000..4d0da8d
--- /dev/null
+++ b/frontend/src/components/GlobalPowerCountdown.vue
@@ -0,0 +1,307 @@
+<template>
+  <!-- 电源操作倒计时全屏弹窗 -->
+  <div v-if="visible" class="power-countdown-overlay">
+    <div class="power-countdown-container">
+      <div class="countdown-content">
+        <div class="warning-icon">⚠️</div>
+        <h2 class="countdown-title">{{ title }}</h2>
+        <p class="countdown-message">{{ message }}</p>
+        <div class="countdown-timer" v-if="countdown !== undefined">
+          <span class="countdown-number">{{ countdown }}</span>
+          <span class="countdown-unit">秒</span>
+        </div>
+        <div class="countdown-timer" v-else>
+          <span class="countdown-text">等待后端倒计时...</span>
+        </div>
+        <a-progress 
+          v-if="countdown !== undefined"
+          :percent="Math.max(0, Math.min(100, (60 - countdown) / 60 * 100))" 
+          :show-info="false" 
+          :stroke-color="(countdown || 0) <= 10 ? '#ff4d4f' : '#1890ff'"
+          :stroke-width="8"
+          class="countdown-progress"
+        />
+        <div class="countdown-actions">
+          <a-button 
+            type="primary" 
+            size="large" 
+            @click="handleCancel"
+            class="cancel-button"
+          >
+            取消操作
+          </a-button>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted, onUnmounted } from 'vue'
+import { Service } from '@/api'
+import { ExternalWSHandlers } from '@/composables/useWebSocket'
+
+// 响应式状态
+const visible = ref(false)
+const title = ref('')
+const message = ref('')
+const countdown = ref<number | undefined>(undefined)
+
+// 倒计时定时器
+let countdownTimer: ReturnType<typeof setInterval> | null = null
+
+// 启动倒计时
+const startCountdown = (data: any) => {
+  console.log('[GlobalPowerCountdown] 启动倒计时:', data)
+  
+  // 清除之前的计时器
+  if (countdownTimer) {
+    clearInterval(countdownTimer)
+    countdownTimer = null
+  }
+
+  // 显示倒计时弹窗
+  visible.value = true
+
+  // 设置倒计时数据，从60秒开始
+  title.value = data.title || '电源操作倒计时'
+  message.value = data.message || '程序将在倒计时结束后执行电源操作'
+  countdown.value = 60
+
+  // 启动每秒倒计时
+  countdownTimer = setInterval(() => {
+    if (countdown.value !== undefined && countdown.value > 0) {
+      countdown.value--
+      console.log('[GlobalPowerCountdown] 倒计时:', countdown.value)
+
+      // 倒计时结束
+      if (countdown.value <= 0) {
+        if (countdownTimer) {
+          clearInterval(countdownTimer)
+          countdownTimer = null
+        }
+        visible.value = false
+        console.log('[GlobalPowerCountdown] 倒计时结束，弹窗关闭')
+      }
+    }
+  }, 1000)
+}
+
+// 取消电源操作
+const handleCancel = async () => {
+  console.log('[GlobalPowerCountdown] 用户取消电源操作')
+  
+  // 清除倒计时器
+  if (countdownTimer) {
+    clearInterval(countdownTimer)
+    countdownTimer = null
+  }
+
+  // 关闭倒计时弹窗
+  visible.value = false
+
+  // 调用取消电源操作的API
+  try {
+    await Service.cancelPowerTaskApiDispatchCancelPowerPost()
+    console.log('[GlobalPowerCountdown] 电源操作已取消')
+  } catch (error) {
+    console.error('[GlobalPowerCountdown] 取消电源操作失败:', error)
+  }
+}
+
+// 处理Main消息的函数
+const handleMainMessage = (message: any) => {
+  if (!message || typeof message !== 'object') return
+  
+  const { type, data } = message
+  
+  if (type === 'Message' && data && data.type === 'Countdown') {
+    console.log('[GlobalPowerCountdown] 收到倒计时消息:', data)
+    startCountdown(data)
+  }
+}
+
+// 清理函数
+const cleanup = () => {
+  if (countdownTimer) {
+    clearInterval(countdownTimer)
+    countdownTimer = null
+  }
+}
+
+// 生命周期
+onMounted(() => {
+  // 替换全局Main消息处理器，添加倒计时处理
+  const originalMainHandler = ExternalWSHandlers.mainMessage
+  
+  ExternalWSHandlers.mainMessage = (message: any) => {
+    // 先调用原有的处理逻辑
+    if (typeof originalMainHandler === 'function') {
+      try {
+        originalMainHandler(message)
+      } catch (e) {
+        console.warn('[GlobalPowerCountdown] 原有Main消息处理器出错:', e)
+      }
+    }
+    
+    // 然后处理倒计时消息
+    handleMainMessage(message)
+  }
+  
+  console.log('[GlobalPowerCountdown] 全局电源倒计时组件已挂载')
+})
+
+onUnmounted(() => {
+  cleanup()
+  console.log('[GlobalPowerCountdown] 全局电源倒计时组件已卸载')
+})
+</script>
+
+<style scoped>
+/* 电源操作倒计时全屏弹窗样式 */
+.power-countdown-overlay {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: rgba(0, 0, 0, 0.8);
+  backdrop-filter: blur(8px);
+  z-index: 10000; /* 确保在所有其他内容之上 */
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  animation: fadeIn 0.3s ease-out;
+}
+
+.power-countdown-container {
+  background: var(--ant-color-bg-container);
+  border-radius: 16px;
+  padding: 48px;
+  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.2);
+  text-align: center;
+  max-width: 500px;
+  width: 90%;
+  animation: slideIn 0.3s ease-out;
+}
+
+.countdown-content .warning-icon {
+  font-size: 64px;
+  margin-bottom: 24px;
+  display: block;
+  animation: pulse 2s infinite;
+}
+
+.countdown-title {
+  font-size: 28px;
+  font-weight: 600;
+  color: var(--ant-color-text);
+  margin: 0 0 16px 0;
+}
+
+.countdown-message {
+  font-size: 16px;
+  color: var(--ant-color-text-secondary);
+  margin: 0 0 32px 0;
+  line-height: 1.5;
+}
+
+.countdown-timer {
+  display: flex;
+  align-items: baseline;
+  justify-content: center;
+  margin-bottom: 32px;
+}
+
+.countdown-number {
+  font-size: 72px;
+  font-weight: 700;
+  color: var(--ant-color-primary);
+  line-height: 1;
+  margin-right: 8px;
+  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
+}
+
+.countdown-unit {
+  font-size: 24px;
+  color: var(--ant-color-text-secondary);
+  font-weight: 500;
+}
+
+.countdown-text {
+  font-size: 24px;
+  color: var(--ant-color-text-secondary);
+  font-weight: 500;
+}
+
+.countdown-progress {
+  margin-bottom: 32px;
+}
+
+.countdown-actions {
+  display: flex;
+  justify-content: center;
+}
+
+.cancel-button {
+  padding: 12px 32px;
+  height: auto;
+  font-size: 16px;
+  font-weight: 500;
+}
+
+/* 动画效果 */
+@keyframes fadeIn {
+  from {
+    opacity: 0;
+  }
+  to {
+    opacity: 1;
+  }
+}
+
+@keyframes slideIn {
+  from {
+    opacity: 0;
+    transform: translateY(-20px) scale(0.95);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0) scale(1);
+  }
+}
+
+@keyframes pulse {
+  0%, 100% {
+    transform: scale(1);
+  }
+  50% {
+    transform: scale(1.1);
+  }
+}
+
+/* 响应式 - 移动端适配 */
+@media (max-width: 768px) {
+  .power-countdown-container {
+    padding: 32px 24px;
+    margin: 16px;
+  }
+
+  .countdown-title {
+    font-size: 24px;
+  }
+
+  .countdown-number {
+    font-size: 56px;
+  }
+
+  .countdown-unit {
+    font-size: 20px;
+  }
+
+  .countdown-content .warning-icon {
+    font-size: 48px;
+    margin-bottom: 16px;
+  }
+}
+</style>
\ No newline at end of file
diff --git a/frontend/src/views/scheduler/index.vue b/frontend/src/views/scheduler/index.vue
index fb2a959..67ee33a 100644
--- a/frontend/src/views/scheduler/index.vue
+++ b/frontend/src/views/scheduler/index.vue
@@ -112,43 +112,7 @@
       </div>
     </a-modal>
 
-    <!-- 电源操作倒计时全屏弹窗 -->
-    <div v-if="powerCountdownVisible" class="power-countdown-overlay">
-      <div class="power-countdown-container">
-        <div class="countdown-content">
-          <div class="warning-icon">⚠️</div>
-          <h2 class="countdown-title">{{ powerCountdownData.title || `${getPowerActionText(powerAction)}倒计时` }}</h2>
-          <p class="countdown-message">
-            {{ powerCountdownData.message || `程序将在倒计时结束后执行 ${getPowerActionText(powerAction)} 操作` }}
-          </p>
-          <div class="countdown-timer" v-if="powerCountdownData.countdown !== undefined">
-            <span class="countdown-number">{{ powerCountdownData.countdown }}</span>
-            <span class="countdown-unit">秒</span>
-          </div>
-          <div class="countdown-timer" v-else>
-            <span class="countdown-text">等待后端倒计时...</span>
-          </div>
-          <a-progress 
-            v-if="powerCountdownData.countdown !== undefined"
-            :percent="Math.max(0, Math.min(100, (60 - powerCountdownData.countdown) / 60 * 100))" 
-            :show-info="false" 
-            :stroke-color="(powerCountdownData.countdown || 0) <= 10 ? '#ff4d4f' : '#1890ff'"
-            :stroke-width="8"
-            class="countdown-progress"
-          />
-          <div class="countdown-actions">
-            <a-button 
-              type="primary" 
-              size="large" 
-              @click="cancelPowerAction"
-              class="cancel-button"
-            >
-              取消操作
-            </a-button>
-          </div>
-        </div>
-      </div>
-    </div>
+    <!-- 电源操作倒计时弹窗已移至全局组件 GlobalPowerCountdown.vue -->
   </div>
 </template>
 
@@ -346,127 +310,7 @@ onUnmounted(() => {
   overflow: hidden;
 }
 
-/* 电源操作倒计时全屏弹窗样式 */
-.power-countdown-overlay {
-  position: fixed;
-  top: 0;
-  left: 0;
-  right: 0;
-  bottom: 0;
-  background: rgba(0, 0, 0, 0.8);
-  backdrop-filter: blur(8px);
-  z-index: 9999;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  animation: fadeIn 0.3s ease-out;
-}
-
-.power-countdown-container {
-  background: var(--ant-color-bg-container);
-  border-radius: 16px;
-  padding: 48px;
-  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.2);
-  text-align: center;
-  max-width: 500px;
-  width: 90%;
-  animation: slideIn 0.3s ease-out;
-}
-
-.countdown-content .warning-icon {
-  font-size: 64px;
-  margin-bottom: 24px;
-  display: block;
-  animation: pulse 2s infinite;
-}
-
-.countdown-title {
-  font-size: 28px;
-  font-weight: 600;
-  color: var(--ant-color-text);
-  margin: 0 0 16px 0;
-}
-
-.countdown-message {
-  font-size: 16px;
-  color: var(--ant-color-text-secondary);
-  margin: 0 0 32px 0;
-  line-height: 1.5;
-}
-
-.countdown-timer {
-  display: flex;
-  align-items: baseline;
-  justify-content: center;
-  margin-bottom: 32px;
-}
-
-.countdown-number {
-  font-size: 72px;
-  font-weight: 700;
-  color: var(--ant-color-primary);
-  line-height: 1;
-  margin-right: 8px;
-  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
-}
-
-.countdown-unit {
-  font-size: 24px;
-  color: var(--ant-color-text-secondary);
-  font-weight: 500;
-}
-
-.countdown-text {
-  font-size: 24px;
-  color: var(--ant-color-text-secondary);
-  font-weight: 500;
-}
-
-.countdown-progress {
-  margin-bottom: 32px;
-}
-
-.countdown-actions {
-  display: flex;
-  justify-content: center;
-}
-
-.cancel-button {
-  padding: 12px 32px;
-  height: auto;
-  font-size: 16px;
-  font-weight: 500;
-}
-
-/* 动画效果 */
-@keyframes fadeIn {
-  from {
-    opacity: 0;
-  }
-  to {
-    opacity: 1;
-  }
-}
-
-@keyframes slideIn {
-  from {
-    opacity: 0;
-    transform: translateY(-20px) scale(0.95);
-  }
-  to {
-    opacity: 1;
-    transform: translateY(0) scale(1);
-  }
-}
-
-@keyframes pulse {
-  0%, 100% {
-    transform: scale(1);
-  }
-  50% {
-    transform: scale(1.1);
-  }
-}
+/* 电源操作倒计时弹窗样式已移至 GlobalPowerCountdown.vue */
 
 /* 响应式 - 移动端适配 */
 @media (max-width: 768px) {
@@ -499,27 +343,6 @@ onUnmounted(() => {
     width: 100%;
   }
 
-  /* 移动端倒计时弹窗适配 */
-  .power-countdown-container {
-    padding: 32px 24px;
-    margin: 16px;
-  }
-
-  .countdown-title {
-    font-size: 24px;
-  }
-
-  .countdown-number {
-    font-size: 56px;
-  }
-
-  .countdown-unit {
-    font-size: 20px;
-  }
-
-  .countdown-content .warning-icon {
-    font-size: 48px;
-    margin-bottom: 16px;
-  }
+  /* 移动端倒计时弹窗适配已移至 GlobalPowerCountdown.vue */
 }
 </style>
\ No newline at end of file
diff --git a/frontend/src/views/scheduler/useSchedulerLogic.ts b/frontend/src/views/scheduler/useSchedulerLogic.ts
index 01711f0..7b541bc 100644
--- a/frontend/src/views/scheduler/useSchedulerLogic.ts
+++ b/frontend/src/views/scheduler/useSchedulerLogic.ts
@@ -8,7 +8,6 @@ import schedulerHandlers from './schedulerHandlers'
 import type { ComboBoxItem } from '@/api/models/ComboBoxItem'
 import type { QueueItem, Script } from './schedulerConstants'
 import {
-  getPowerActionText,
   type SchedulerTab,
   type TaskMessage,
   type SchedulerStatus,
@@ -94,13 +93,15 @@ export function useSchedulerLogic() {
 
   // 电源操作 - 从本地存储加载或使用默认值
   const powerAction = ref<PowerIn.signal>(loadPowerActionFromStorage())
+  // 注意：电源倒计时弹窗已移至全局组件 GlobalPowerCountdown.vue
+  // 这里保留引用以避免破坏现有代码，但实际功能由全局组件处理
   const powerCountdownVisible = ref(false)
   const powerCountdownData = ref<{
     title?: string
     message?: string
     countdown?: number
   }>({})
-  // 前端自己的60秒倒计时
+  // 前端自己的60秒倒计时 - 已移至全局组件
   let powerCountdownTimer: ReturnType<typeof setInterval> | null = null
 
   // 消息弹窗
@@ -508,10 +509,10 @@ export function useSchedulerLogic() {
   }
 
   const handleMessageDialog = (tab: SchedulerTab, data: any) => {
-    // 处理倒计时消息
+    // 处理倒计时消息 - 已移至全局组件处理
     if (data.type === 'Countdown') {
-      console.log('[Scheduler] 收到倒计时消息，启动60秒倒计时:', data)
-      startPowerCountdown(data)
+      console.log('[Scheduler] 收到倒计时消息，由全局组件处理:', data)
+      // 不再在调度中心处理倒计时，由 GlobalPowerCountdown 组件处理
       return
     }
 
@@ -654,68 +655,16 @@ export function useSchedulerLogic() {
     console.log('[Scheduler] 电源操作显示已更新为:', newPowerAction)
   }
 
-  // 启动60秒倒计时
-  const startPowerCountdown = (data: any) => {
-    // 清除之前的计时器
-    if (powerCountdownTimer) {
-      clearInterval(powerCountdownTimer)
-      powerCountdownTimer = null
-    }
-
-    // 显示倒计时弹窗
-    powerCountdownVisible.value = true
-
-    // 设置倒计时数据，从60秒开始
-    powerCountdownData.value = {
-      title: data.title || `${getPowerActionText(powerAction.value)}倒计时`,
-      message: data.message || `程序将在倒计时结束后执行 ${getPowerActionText(powerAction.value)} 操作`,
-      countdown: 60
-    }
-
-    // 启动每秒倒计时
-    powerCountdownTimer = setInterval(() => {
-      if (powerCountdownData.value.countdown && powerCountdownData.value.countdown > 0) {
-        powerCountdownData.value.countdown--
-        console.log('[Scheduler] 倒计时:', powerCountdownData.value.countdown)
-
-        // 倒计时结束
-        if (powerCountdownData.value.countdown <= 0) {
-          if (powerCountdownTimer) {
-            clearInterval(powerCountdownTimer)
-            powerCountdownTimer = null
-          }
-          powerCountdownVisible.value = false
-          console.log('[Scheduler] 倒计时结束，弹窗关闭')
-        }
-      }
-    }, 1000)
-  }
-
-  // 移除自动执行电源操作，由后端完全控制
+  // 启动60秒倒计时 - 已移至全局组件，这里保留空函数避免破坏现有代码
+// 移除自动执行电源操作，由后端完全控制
   // const executePowerAction = async () => {
   //   // 不再自己执行电源操作，完全由后端控制
   // }
 
   const cancelPowerAction = async () => {
-    // 清除倒计时器
-    if (powerCountdownTimer) {
-      clearInterval(powerCountdownTimer)
-      powerCountdownTimer = null
-    }
-
-    // 关闭倒计时弹窗
-    powerCountdownVisible.value = false
-
-    // 调用取消电源操作的API
-    try {
-      await Service.cancelPowerTaskApiDispatchCancelPowerPost()
-      message.success('已取消电源操作')
-    } catch (error) {
-      console.error('取消电源操作失败:', error)
-      message.error('取消电源操作失败')
-    }
-
-    // 注意：这里不重置 powerAction，保留用户选择
+    console.log('[Scheduler] cancelPowerAction 已移至全局组件，调度中心不再处理')
+    // 电源操作取消功能已移至 GlobalPowerCountdown 组件
+    // 这里保留空函数以避免破坏现有的调用代码
   }
 
   // 移除自动检查任务完成的逻辑，完全由后端控制
@@ -788,8 +737,8 @@ export function useSchedulerLogic() {
         },
         onCountdown: (data) => {
           try {
-            // 直接启动前端倒计时
-            startPowerCountdown(data)
+            // 倒计时已移至全局组件处理，这里不再处理
+            console.log('[Scheduler] 倒计时消息由全局组件处理:', data)
           } catch (e) {
             console.warn('[Scheduler] registerSchedulerUI onCountdown error:', e)
           }
@@ -814,7 +763,8 @@ export function useSchedulerLogic() {
       const pendingCountdown = schedulerHandlers.consumePendingCountdown()
       if (pendingCountdown) {
         try {
-          startPowerCountdown(pendingCountdown)
+          // 倒计时已移至全局组件处理，这里不再处理
+          console.log('[Scheduler] 待处理倒计时消息由全局组件处理:', pendingCountdown)
         } catch (e) {
           console.warn('[Scheduler] replay pending countdown error:', e)
         }
@@ -844,9 +794,9 @@ export function useSchedulerLogic() {
     console.log('[Scheduler] 收到Main消息:', { type, data })
 
     if (type === 'Message' && data && data.type === 'Countdown') {
-      // 收到倒计时消息，启动前端60秒倒计时
-      console.log('[Scheduler] 收到倒计时消息，启动前端60秒倒计时:', data)
-      startPowerCountdown(data)
+      // 收到倒计时消息，由全局组件处理
+      console.log('[Scheduler] 收到倒计时消息，由全局组件处理:', data)
+      // 不再在调度中心处理倒计时
     } else if (type === 'Update' && data && data.PowerSign !== undefined) {
       // 收到电源操作更新消息，更新显示
       console.log('[Scheduler] 收到电源操作更新消息:', data.PowerSign)
@@ -856,7 +806,7 @@ export function useSchedulerLogic() {
 
   // 清理函数
   const cleanup = () => {
-    // 清理倒计时器
+    // 清理倒计时器 - 已移至全局组件，这里保留以避免错误
     if (powerCountdownTimer) {
       clearInterval(powerCountdownTimer)
       powerCountdownTimer = null