diff --git a/src/views/user-vm/UserVmDetail.vue b/src/views/user-vm/UserVmDetail.vue
index 122f2e8..4376499 100644
--- a/src/views/user-vm/UserVmDetail.vue
+++ b/src/views/user-vm/UserVmDetail.vue
@@ -402,15 +402,28 @@
               <div class="section-header">
                 <h3 class="section-title">监控指标</h3>
                 <div style="display: flex; align-items: center; gap: 8px; flex-wrap: wrap">
+                  <el-radio-group v-model="monitorTimeMode" size="small" @change="loadMetricsHistory">
+                    <el-radio-button label="relative">最近</el-radio-button>
+                    <el-radio-button label="fixed">自定义</el-radio-button>
+                  </el-radio-group>
+                  <el-select v-if="monitorTimeMode === 'relative'" v-model="monitorRelativeMinutes" size="small" style="width: 120px" @change="loadMetricsHistory">
+                    <el-option label="10分钟" :value="10" />
+                    <el-option label="30分钟" :value="30" />
+                    <el-option label="1小时" :value="60" />
+                    <el-option label="6小时" :value="360" />
+                    <el-option label="12小时" :value="720" />
+                    <el-option label="1天" :value="1440" />
+                    <el-option label="7天" :value="10080" />
+                  </el-select>
                   <el-date-picker
+                    v-else
                     v-model="monitorDateRange"
                     type="datetimerange"
                     range-separator="至"
-                    start-placeholder="开始时间"
-                    end-placeholder="结束时间"
+                    start-placeholder="开始"
+                    end-placeholder="结束"
                     size="small"
-                    style="width: 360px"
-                    :shortcuts="monitorShortcuts"
+                    style="width: 340px"
                     @change="loadMetricsHistory"
                   />
                   <span style="font-size:12px;color:#909399;white-space:nowrap">粒度: {{ currentIntervalLabel }}</span>
@@ -516,16 +529,27 @@
             <div class="section-block" style="margin-top:16px">
               <div class="section-header">
                 <h3 class="section-title">每小时流量</h3>
-                <div style="display: flex; align-items: center; gap: 8px">
+                <div style="display: flex; align-items: center; gap: 8px; flex-wrap: wrap">
+                  <el-radio-group v-model="trafficTimeMode" size="small" @change="loadTrafficHourly">
+                    <el-radio-button label="relative">最近</el-radio-button>
+                    <el-radio-button label="fixed">自定义</el-radio-button>
+                  </el-radio-group>
+                  <el-select v-if="trafficTimeMode === 'relative'" v-model="trafficRelativeMinutes" size="small" style="width: 120px" @change="loadTrafficHourly">
+                    <el-option label="6小时" :value="360" />
+                    <el-option label="12小时" :value="720" />
+                    <el-option label="1天" :value="1440" />
+                    <el-option label="3天" :value="4320" />
+                    <el-option label="7天" :value="10080" />
+                  </el-select>
                   <el-date-picker
+                    v-else
                     v-model="trafficHourlyRange"
                     type="datetimerange"
                     range-separator="至"
-                    start-placeholder="开始时间"
-                    end-placeholder="结束时间"
+                    start-placeholder="开始"
+                    end-placeholder="结束"
                     size="small"
-                    style="width: 360px"
-                    :shortcuts="monitorShortcuts"
+                    style="width: 340px"
                     @change="loadTrafficHourly"
                   />
                   <el-button size="small" :icon="Refresh" @click="loadTrafficHourly" :loading="trafficHourlyLoading">刷新</el-button>
@@ -2259,24 +2283,35 @@ const submitAddTraffic = async () => {
 }
 
 // ---- 每小时流量统计 ----
+const trafficTimeMode = ref('relative')
+const trafficRelativeMinutes = ref(1440)
 const trafficHourlyRange = ref(null)
 const trafficHourlyData = ref([])
 const trafficHourlyLoading = ref(false)
 const trafficHourlyChartRef = ref(null)
 let trafficHourlyChart = null
 
+const getTrafficTimeRange = () => {
+  if (trafficTimeMode.value === 'relative') {
+    const endTime = new Date()
+    const startTime = new Date(endTime - trafficRelativeMinutes.value * 60 * 1000)
+    return { startTime, endTime }
+  } else {
+    if (!trafficHourlyRange.value || trafficHourlyRange.value.length < 2) return null
+    return { startTime: new Date(trafficHourlyRange.value[0]), endTime: new Date(trafficHourlyRange.value[1]) }
+  }
+}
+
 const loadTrafficHourly = async () => {
   if (!userGoodsId.value) return
-  if (!trafficHourlyRange.value) {
-    const now = new Date()
-    trafficHourlyRange.value = [new Date(now.getTime() - 24 * 3600 * 1000), now]
-  }
+  const range = getTrafficTimeRange()
+  if (!range) return
   trafficHourlyLoading.value = true
   try {
     const res = await getUserVmTrafficHourly({
       user_goods_id: userGoodsId.value,
-      start: new Date(trafficHourlyRange.value[0]).toISOString(),
-      end_time: new Date(trafficHourlyRange.value[1]).toISOString()
+      start: range.startTime.toISOString(),
+      end_time: range.endTime.toISOString()
     })
     const raw = res?.data?.data?.data
     trafficHourlyData.value = typeof raw === 'string' ? JSON.parse(raw) : (Array.isArray(raw) ? raw : [])
@@ -2372,21 +2407,20 @@ let trafficUsedChart = null
 const metricsData = ref(null)
 const metricsLoading = ref(false)
 
-const makeDefaultRange = () => {
-  const now = new Date()
-  return [new Date(now.getTime() - 10 * 60 * 1000), now]
-}
-const monitorDateRange = ref(makeDefaultRange())
+const monitorTimeMode = ref('relative')
+const monitorRelativeMinutes = ref(10)
+const monitorDateRange = ref(null)
 
-const monitorShortcuts = [
-  { text: '最近10分钟', value: () => { const n = new Date(); return [new Date(n.getTime() - 10 * 60000), n] } },
-  { text: '最近30分钟', value: () => { const n = new Date(); return [new Date(n.getTime() - 30 * 60000), n] } },
-  { text: '最近1小时', value: () => { const n = new Date(); return [new Date(n.getTime() - 3600000), n] } },
-  { text: '最近6小时', value: () => { const n = new Date(); return [new Date(n.getTime() - 6 * 3600000), n] } },
-  { text: '最近12小时', value: () => { const n = new Date(); return [new Date(n.getTime() - 12 * 3600000), n] } },
-  { text: '最近1天', value: () => { const n = new Date(); return [new Date(n.getTime() - 86400000), n] } },
-  { text: '最近7天', value: () => { const n = new Date(); return [new Date(n.getTime() - 7 * 86400000), n] } },
-]
+const getMonitorTimeRange = () => {
+  if (monitorTimeMode.value === 'relative') {
+    const endTime = new Date()
+    const startTime = new Date(endTime - monitorRelativeMinutes.value * 60 * 1000)
+    return { startTime, endTime }
+  } else {
+    if (!monitorDateRange.value || monitorDateRange.value.length < 2) return null
+    return { startTime: new Date(monitorDateRange.value[0]), endTime: new Date(monitorDateRange.value[1]) }
+  }
+}
 
 function calcInterval(startTime, endTime) {
   const spanMin = (endTime.getTime() - startTime.getTime()) / 60000
@@ -2404,8 +2438,9 @@ function calcInterval(startTime, endTime) {
 
 const intervalLabelMap = { '1m': '1分钟', '3m': '3分钟', '5m': '5分钟', '15m': '15分钟', '30m': '30分钟', '1h': '1小时', '2h': '2小时', '6h': '6小时', '12h': '12小时', '1d': '1天' }
 const currentIntervalLabel = computed(() => {
-  if (!monitorDateRange.value || monitorDateRange.value.length < 2) return '-'
-  const iv = calcInterval(new Date(monitorDateRange.value[0]), new Date(monitorDateRange.value[1]))
+  const range = getMonitorTimeRange()
+  if (!range) return '-'
+  const iv = calcInterval(range.startTime, range.endTime)
   return intervalLabelMap[iv] || iv
 })
 
@@ -2450,11 +2485,11 @@ const vmMemPercent = (m) => {
 
 const loadMetricsHistory = async () => {
   if (!userGoodsId.value) return
-  if (!monitorDateRange.value || monitorDateRange.value.length < 2) return
+  const range = getMonitorTimeRange()
+  if (!range) return
   metricsLoading.value = true
   try {
-    const startTime = new Date(monitorDateRange.value[0])
-    const endTime = new Date(monitorDateRange.value[1])
+    const { startTime, endTime } = range
     const interval = calcInterval(startTime, endTime)
     const params = {
       user_goods_id: userGoodsId.value,
@@ -2482,7 +2517,8 @@ const renderMetricsCharts = () => {
   const metrics = metricsData.value
   if (!Array.isArray(metrics) || !metrics.length) return
 
-  const spanMs = monitorDateRange.value ? (new Date(monitorDateRange.value[1]).getTime() - new Date(monitorDateRange.value[0]).getTime()) : 600000
+  const range = getMonitorTimeRange()
+  const spanMs = range ? (range.endTime.getTime() - range.startTime.getTime()) : 600000
   const showDate = spanMs >= 86400000
   const symbolType = metrics.length < 30 ? 'circle' : 'none'
   const labelRotate = showDate ? 45 : 0
diff --git a/src/views/virtualization/HostDetail.vue b/src/views/virtualization/HostDetail.vue
index 857d576..9ad4e20 100644
--- a/src/views/virtualization/HostDetail.vue
+++ b/src/views/virtualization/HostDetail.vue
@@ -259,15 +259,28 @@
             <div class="section-header">
               <h3 class="section-title">监控指标</h3>
               <div style="display: flex; align-items: center; gap: 8px; flex-wrap: wrap">
+                <el-radio-group v-model="monitorTimeMode" size="small" @change="loadHistoricalMetrics">
+                  <el-radio-button label="relative">最近</el-radio-button>
+                  <el-radio-button label="fixed">自定义</el-radio-button>
+                </el-radio-group>
+                <el-select v-if="monitorTimeMode === 'relative'" v-model="monitorRelativeMinutes" size="small" style="width: 120px" @change="loadHistoricalMetrics">
+                  <el-option label="10分钟" :value="10" />
+                  <el-option label="30分钟" :value="30" />
+                  <el-option label="1小时" :value="60" />
+                  <el-option label="6小时" :value="360" />
+                  <el-option label="12小时" :value="720" />
+                  <el-option label="1天" :value="1440" />
+                  <el-option label="7天" :value="10080" />
+                </el-select>
                 <el-date-picker
+                  v-else
                   v-model="monitorDateRange"
                   type="datetimerange"
                   range-separator="至"
-                  start-placeholder="开始时间"
-                  end-placeholder="结束时间"
+                  start-placeholder="开始"
+                  end-placeholder="结束"
                   size="small"
-                  style="width: 360px"
-                  :shortcuts="monitorShortcuts"
+                  style="width: 340px"
                   @change="loadHistoricalMetrics"
                 />
                 <span style="font-size:12px;color:#909399;white-space:nowrap">粒度: {{ currentIntervalLabel }}</span>
@@ -1109,21 +1122,20 @@ const latestMetrics = computed(() => {
   return arr[arr.length - 1]
 })
 
-const makeDefaultRange = () => {
-  const now = new Date()
-  return [new Date(now.getTime() - 10 * 60 * 1000), now]
-}
-const monitorDateRange = ref(makeDefaultRange())
+const monitorTimeMode = ref('relative')
+const monitorRelativeMinutes = ref(10)
+const monitorDateRange = ref(null)
 
-const monitorShortcuts = [
-  { text: '最近10分钟', value: () => { const n = new Date(); return [new Date(n.getTime() - 10 * 60000), n] } },
-  { text: '最近30分钟', value: () => { const n = new Date(); return [new Date(n.getTime() - 30 * 60000), n] } },
-  { text: '最近1小时', value: () => { const n = new Date(); return [new Date(n.getTime() - 3600000), n] } },
-  { text: '最近6小时', value: () => { const n = new Date(); return [new Date(n.getTime() - 6 * 3600000), n] } },
-  { text: '最近12小时', value: () => { const n = new Date(); return [new Date(n.getTime() - 12 * 3600000), n] } },
-  { text: '最近1天', value: () => { const n = new Date(); return [new Date(n.getTime() - 86400000), n] } },
-  { text: '最近7天', value: () => { const n = new Date(); return [new Date(n.getTime() - 7 * 86400000), n] } },
-]
+const getMonitorTimeRange = () => {
+  if (monitorTimeMode.value === 'relative') {
+    const endTime = new Date()
+    const startTime = new Date(endTime - monitorRelativeMinutes.value * 60 * 1000)
+    return { startTime, endTime }
+  } else {
+    if (!monitorDateRange.value || monitorDateRange.value.length < 2) return null
+    return { startTime: new Date(monitorDateRange.value[0]), endTime: new Date(monitorDateRange.value[1]) }
+  }
+}
 
 function calcInterval(startTime, endTime) {
   const spanMin = (endTime.getTime() - startTime.getTime()) / 60000
@@ -1141,18 +1153,19 @@ function calcInterval(startTime, endTime) {
 
 const intervalLabelMap = { '1m': '1分钟', '3m': '3分钟', '5m': '5分钟', '15m': '15分钟', '30m': '30分钟', '1h': '1小时', '2h': '2小时', '6h': '6小时', '12h': '12小时', '1d': '1天' }
 const currentIntervalLabel = computed(() => {
-  if (!monitorDateRange.value || monitorDateRange.value.length < 2) return '-'
-  const iv = calcInterval(new Date(monitorDateRange.value[0]), new Date(monitorDateRange.value[1]))
+  const range = getMonitorTimeRange()
+  if (!range) return '-'
+  const iv = calcInterval(range.startTime, range.endTime)
   return intervalLabelMap[iv] || iv
 })
 
 const loadHistoricalMetrics = async () => {
   if (!serviceId.value || !hostId.value) return
-  if (!monitorDateRange.value || monitorDateRange.value.length < 2) return
+  const range = getMonitorTimeRange()
+  if (!range) return
   historicalMetricsLoading.value = true
   try {
-    const startTime = new Date(monitorDateRange.value[0])
-    const endTime = new Date(monitorDateRange.value[1])
+    const { startTime, endTime } = range
     const interval = calcInterval(startTime, endTime)
     const params = {
       service_id: serviceId.value,
@@ -1192,7 +1205,8 @@ const renderHistoricalCharts = () => {
   const metrics = historicalMetricsData.value
   if (!Array.isArray(metrics) || !metrics.length) return
 
-  const spanMs = monitorDateRange.value ? (new Date(monitorDateRange.value[1]).getTime() - new Date(monitorDateRange.value[0]).getTime()) : 0
+  const range = getMonitorTimeRange()
+  const spanMs = range ? (range.endTime.getTime() - range.startTime.getTime()) : 0
   const showDate = spanMs >= 12 * 3600 * 1000
   const symbolType = spanMs >= 7 * 86400 * 1000 ? 'circle' : 'none'
   const labelRotate = showDate ? 45 : 0
diff --git a/src/views/virtualization/VmDetail.vue b/src/views/virtualization/VmDetail.vue
index 717cc47..da87bc2 100644
--- a/src/views/virtualization/VmDetail.vue
+++ b/src/views/virtualization/VmDetail.vue
@@ -594,15 +594,28 @@
             <div class="section-header">
               <h3 class="section-title">监控指标</h3>
               <div style="display: flex; align-items: center; gap: 8px; flex-wrap: wrap">
+                <el-radio-group v-model="monitorTimeMode" size="small" @change="loadHistoricalMetrics">
+                  <el-radio-button label="relative">最近</el-radio-button>
+                  <el-radio-button label="fixed">自定义</el-radio-button>
+                </el-radio-group>
+                <el-select v-if="monitorTimeMode === 'relative'" v-model="monitorRelativeMinutes" size="small" style="width: 120px" @change="loadHistoricalMetrics">
+                  <el-option label="10分钟" :value="10" />
+                  <el-option label="30分钟" :value="30" />
+                  <el-option label="1小时" :value="60" />
+                  <el-option label="6小时" :value="360" />
+                  <el-option label="12小时" :value="720" />
+                  <el-option label="1天" :value="1440" />
+                  <el-option label="7天" :value="10080" />
+                </el-select>
                 <el-date-picker
+                  v-else
                   v-model="monitorDateRange"
                   type="datetimerange"
                   range-separator="至"
-                  start-placeholder="开始时间"
-                  end-placeholder="结束时间"
+                  start-placeholder="开始"
+                  end-placeholder="结束"
                   size="small"
-                  style="width: 360px"
-                  :shortcuts="monitorShortcuts"
+                  style="width: 340px"
                   @change="loadHistoricalMetrics"
                 />
                 <span style="font-size:12px;color:#909399;white-space:nowrap">粒度: {{ currentIntervalLabel }}</span>
@@ -708,16 +721,27 @@
           <div class="section-block">
             <div class="section-header">
               <h3 class="section-title">每小时流量</h3>
-              <div style="display: flex; align-items: center; gap: 8px">
+              <div style="display: flex; align-items: center; gap: 8px; flex-wrap: wrap">
+                <el-radio-group v-model="trafficTimeMode" size="small" @change="loadTrafficHourly">
+                  <el-radio-button label="relative">最近</el-radio-button>
+                  <el-radio-button label="fixed">自定义</el-radio-button>
+                </el-radio-group>
+                <el-select v-if="trafficTimeMode === 'relative'" v-model="trafficRelativeMinutes" size="small" style="width: 120px" @change="loadTrafficHourly">
+                  <el-option label="6小时" :value="360" />
+                  <el-option label="12小时" :value="720" />
+                  <el-option label="1天" :value="1440" />
+                  <el-option label="3天" :value="4320" />
+                  <el-option label="7天" :value="10080" />
+                </el-select>
                 <el-date-picker
+                  v-else
                   v-model="trafficHourlyRange"
                   type="datetimerange"
                   range-separator="至"
-                  start-placeholder="开始时间"
-                  end-placeholder="结束时间"
+                  start-placeholder="开始"
+                  end-placeholder="结束"
                   size="small"
-                  style="width: 360px"
-                  :shortcuts="monitorShortcuts"
+                  style="width: 340px"
                   @change="loadTrafficHourly"
                 />
                 <el-button size="small" :icon="Refresh" @click="loadTrafficHourly" :loading="trafficHourlyLoading">刷新</el-button>
@@ -1911,21 +1935,20 @@ let isPageActive = false
 const historicalMetricsData = ref(null)
 const historicalMetricsLoading = ref(false)
 
-const makeDefaultRange = () => {
-  const now = new Date()
-  return [new Date(now.getTime() - 10 * 60 * 1000), now]
-}
-const monitorDateRange = ref(makeDefaultRange())
+const monitorTimeMode = ref('relative')
+const monitorRelativeMinutes = ref(10)
+const monitorDateRange = ref(null)
 
-const monitorShortcuts = [
-  { text: '最近10分钟', value: () => { const n = new Date(); return [new Date(n.getTime() - 10 * 60000), n] } },
-  { text: '最近30分钟', value: () => { const n = new Date(); return [new Date(n.getTime() - 30 * 60000), n] } },
-  { text: '最近1小时', value: () => { const n = new Date(); return [new Date(n.getTime() - 3600000), n] } },
-  { text: '最近6小时', value: () => { const n = new Date(); return [new Date(n.getTime() - 6 * 3600000), n] } },
-  { text: '最近12小时', value: () => { const n = new Date(); return [new Date(n.getTime() - 12 * 3600000), n] } },
-  { text: '最近1天', value: () => { const n = new Date(); return [new Date(n.getTime() - 86400000), n] } },
-  { text: '最近7天', value: () => { const n = new Date(); return [new Date(n.getTime() - 7 * 86400000), n] } },
-]
+const getMonitorTimeRange = () => {
+  if (monitorTimeMode.value === 'relative') {
+    const endTime = new Date()
+    const startTime = new Date(endTime - monitorRelativeMinutes.value * 60 * 1000)
+    return { startTime, endTime }
+  } else {
+    if (!monitorDateRange.value || monitorDateRange.value.length < 2) return null
+    return { startTime: new Date(monitorDateRange.value[0]), endTime: new Date(monitorDateRange.value[1]) }
+  }
+}
 
 function calcInterval(startTime, endTime) {
   const spanMin = (endTime.getTime() - startTime.getTime()) / 60000
@@ -1943,8 +1966,9 @@ function calcInterval(startTime, endTime) {
 
 const intervalLabelMap = { '1m': '1分钟', '3m': '3分钟', '5m': '5分钟', '15m': '15分钟', '30m': '30分钟', '1h': '1小时', '2h': '2小时', '6h': '6小时', '12h': '12小时', '1d': '1天' }
 const currentIntervalLabel = computed(() => {
-  if (!monitorDateRange.value || monitorDateRange.value.length < 2) return '-'
-  const iv = calcInterval(new Date(monitorDateRange.value[0]), new Date(monitorDateRange.value[1]))
+  const range = getMonitorTimeRange()
+  if (!range) return '-'
+  const iv = calcInterval(range.startTime, range.endTime)
   return intervalLabelMap[iv] || iv
 })
 
@@ -1987,11 +2011,11 @@ const vmMemPercent = (m) => {
 
 const loadHistoricalMetrics = async () => {
   if (!serviceId.value || !detail.value?.name) return
-  if (!monitorDateRange.value || monitorDateRange.value.length < 2) return
+  const range = getMonitorTimeRange()
+  if (!range) return
   historicalMetricsLoading.value = true
   try {
-    const startTime = new Date(monitorDateRange.value[0])
-    const endTime = new Date(monitorDateRange.value[1])
+    const { startTime, endTime } = range
     const interval = calcInterval(startTime, endTime)
     const params = {
       service_id: serviceId.value,
@@ -2021,7 +2045,8 @@ const renderHistoricalCharts = () => {
   const metrics = historicalMetricsData.value
   if (!Array.isArray(metrics) || !metrics.length) return
 
-  const spanMs = monitorDateRange.value ? (new Date(monitorDateRange.value[1]).getTime() - new Date(monitorDateRange.value[0]).getTime()) : 0
+  const range = getMonitorTimeRange()
+  const spanMs = range ? (range.endTime.getTime() - range.startTime.getTime()) : 0
   const showDate = spanMs >= 12 * 3600 * 1000
   const symbolType = showDate ? 'circle' : 'none'
   const labelRotate = showDate ? 45 : 0
@@ -3003,26 +3028,37 @@ const handleConnectNetwork = () => {
 }
 
 // ---- 每小时流量统计 ----
+const trafficTimeMode = ref('relative')
+const trafficRelativeMinutes = ref(1440)
 const trafficHourlyRange = ref(null)
 const trafficHourlyData = ref([])
 const trafficHourlyLoading = ref(false)
 const trafficHourlyChartRef = ref(null)
 let trafficHourlyChart = null
 
+const getTrafficTimeRange = () => {
+  if (trafficTimeMode.value === 'relative') {
+    const endTime = new Date()
+    const startTime = new Date(endTime - trafficRelativeMinutes.value * 60 * 1000)
+    return { startTime, endTime }
+  } else {
+    if (!trafficHourlyRange.value || trafficHourlyRange.value.length < 2) return null
+    return { startTime: new Date(trafficHourlyRange.value[0]), endTime: new Date(trafficHourlyRange.value[1]) }
+  }
+}
+
 const loadTrafficHourly = async () => {
   if (!serviceId.value || !detail.value?.host_id || !detail.value?.name) return
-  if (!trafficHourlyRange.value) {
-    const now = new Date()
-    trafficHourlyRange.value = [new Date(now.getTime() - 24 * 3600 * 1000), now]
-  }
+  const range = getTrafficTimeRange()
+  if (!range) return
   trafficHourlyLoading.value = true
   try {
     const res = await getVmTrafficHourly({
       service_id: serviceId.value,
       host_id: detail.value.host_id,
       vm_name: detail.value.name,
-      start: new Date(trafficHourlyRange.value[0]).toISOString(),
-      end_time: new Date(trafficHourlyRange.value[1]).toISOString()
+      start: range.startTime.toISOString(),
+      end_time: range.endTime.toISOString()
     })
     const raw = res?.data?.data?.data
     trafficHourlyData.value = typeof raw === 'string' ? JSON.parse(raw) : (Array.isArray(raw) ? raw : [])
diff --git a/src/views/virtualization/VmMonitor.vue b/src/views/virtualization/VmMonitor.vue
index 5932881..6beecfb 100644
--- a/src/views/virtualization/VmMonitor.vue
+++ b/src/views/virtualization/VmMonitor.vue
@@ -32,19 +32,34 @@
       <div class="toolbar-row">
         <div class="toolbar-item">
           <span class="toolbar-label">时间</span>
-          <el-select v-model="timeRange" style="width: 140px" @change="handleRefresh">
-            <el-option label="最近10分钟" :value="10" />
-            <el-option label="最近30分钟" :value="30" />
-            <el-option label="最近1小时" :value="60" />
-            <el-option label="最近3小时" :value="180" />
-            <el-option label="最近6小时" :value="360" />
-            <el-option label="最近12小时" :value="720" />
-            <el-option label="最近24小时" :value="1440" />
+          <el-radio-group v-model="timeMode" size="small" @change="handleRefresh">
+            <el-radio-button label="relative">最近</el-radio-button>
+            <el-radio-button label="fixed">自定义</el-radio-button>
+          </el-radio-group>
+          <el-select v-if="timeMode === 'relative'" v-model="timeRange" style="width: 130px" @change="handleRefresh">
+            <el-option label="10分钟" :value="10" />
+            <el-option label="30分钟" :value="30" />
+            <el-option label="1小时" :value="60" />
+            <el-option label="3小时" :value="180" />
+            <el-option label="6小时" :value="360" />
+            <el-option label="12小时" :value="720" />
+            <el-option label="24小时" :value="1440" />
           </el-select>
+          <el-date-picker
+            v-else
+            v-model="fixedDateRange"
+            type="datetimerange"
+            range-separator="至"
+            start-placeholder="开始"
+            end-placeholder="结束"
+            size="small"
+            style="width: 340px"
+            @change="handleRefresh"
+          />
         </div>
         <div class="toolbar-item">
           <span class="toolbar-label">自动刷新</span>
-          <el-select v-model="autoRefreshInterval" style="width: 120px" @change="resetAutoRefresh">
+          <el-select v-model="autoRefreshInterval" style="width: 110px" @change="resetAutoRefresh">
             <el-option label="关闭" :value="0" />
             <el-option label="10秒" :value="10" />
             <el-option label="30秒" :value="30" />
@@ -91,7 +106,9 @@ const selectedMetrics = ref(['cpu', 'memory'])
 const metricsLoading = ref(false)
 const loaded = ref(false)
 const metricsDataMap = ref({})
+const timeMode = ref('relative')
 const timeRange = ref(60)
+const fixedDateRange = ref(null)
 const autoRefreshInterval = ref(0)
 let autoRefreshTimer = null
 
@@ -169,11 +186,23 @@ const loadVmList = async () => {
   }
 }
 
+const getTimeRange = () => {
+  if (timeMode.value === 'relative') {
+    const endTime = new Date()
+    const startTime = new Date(endTime - timeRange.value * 60 * 1000)
+    return { startTime, endTime }
+  } else {
+    if (!fixedDateRange.value || fixedDateRange.value.length < 2) return null
+    return { startTime: new Date(fixedDateRange.value[0]), endTime: new Date(fixedDateRange.value[1]) }
+  }
+}
+
 const handleRefresh = async () => {
   if (!selectedVms.value.length) return
+  const range = getTimeRange()
+  if (!range) { ElMessage.warning('请选择时间范围'); return }
   metricsLoading.value = true
-  const endTime = new Date()
-  const startTime = new Date(endTime - timeRange.value * 60 * 1000)
+  const { startTime, endTime } = range
   const interval = calcInterval(endTime - startTime)
 
   const dataMap = {}
@@ -208,7 +237,9 @@ const handleRefresh = async () => {
 }
 
 const renderCharts = () => {
-  const showDate = timeRange.value >= 720
+  const range = getTimeRange()
+  const spanMs = range ? (range.endTime - range.startTime) : 0
+  const showDate = spanMs >= 12 * 3600 * 1000
   const labelRotate = showDate ? 30 : 0
 
   for (const metric of selectedMetrics.value) {