diff --git a/src/views/user-vm/UserVmDetail.vue b/src/views/user-vm/UserVmDetail.vue
index 6d3673d..e20df1d 100644
--- a/src/views/user-vm/UserVmDetail.vue
+++ b/src/views/user-vm/UserVmDetail.vue
@@ -336,12 +336,19 @@
             <div class="section-block">
               <div class="section-header">
                 <h3 class="section-title">监控指标</h3>
-                <div style="display: flex; align-items: center; gap: 8px">
-                  <el-select v-model="monitorInterval" size="small" style="width: 120px" @change="loadMetricsHistory">
-                    <el-option label="1分钟" value="1m" />
-                    <el-option label="5分钟" value="5m" />
-                    <el-option label="1小时" value="1h" />
-                  </el-select>
+                <div style="display: flex; align-items: center; gap: 8px; flex-wrap: wrap">
+                  <el-date-picker
+                    v-model="monitorDateRange"
+                    type="datetimerange"
+                    range-separator="至"
+                    start-placeholder="开始时间"
+                    end-placeholder="结束时间"
+                    size="small"
+                    style="width: 360px"
+                    :shortcuts="monitorShortcuts"
+                    @change="loadMetricsHistory"
+                  />
+                  <span style="font-size:12px;color:#909399;white-space:nowrap">粒度: {{ currentIntervalLabel }}</span>
                   <el-button size="small" :icon="Refresh" @click="loadMetricsHistory" :loading="metricsLoading">刷新</el-button>
                 </div>
               </div>
@@ -1917,7 +1924,43 @@ let netChart = null
 
 const metricsData = ref(null)
 const metricsLoading = ref(false)
-const monitorInterval = ref('1m')
+
+const makeDefaultRange = () => {
+  const now = new Date()
+  return [new Date(now.getTime() - 10 * 60 * 1000), now]
+}
+const monitorDateRange = ref(makeDefaultRange())
+
+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] } },
+]
+
+function calcInterval(startTime, endTime) {
+  const spanMin = (endTime.getTime() - startTime.getTime()) / 60000
+  if (spanMin < 30) return '1m'
+  if (spanMin < 60) return '3m'
+  if (spanMin < 360) return '5m'
+  if (spanMin < 720) return '15m'
+  if (spanMin < 1440) return '30m'
+  if (spanMin < 4320) return '1h'
+  if (spanMin < 10080) return '2h'
+  if (spanMin < 43200) return '6h'
+  if (spanMin < 129600) return '12h'
+  return '1d'
+}
+
+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]))
+  return intervalLabelMap[iv] || iv
+})
 
 const latestMetrics = computed(() => {
   const arr = metricsData.value
@@ -1960,20 +2003,16 @@ const vmMemPercent = (m) => {
 
 const loadMetricsHistory = async () => {
   if (!userGoodsId.value) return
+  if (!monitorDateRange.value || monitorDateRange.value.length < 2) return
   metricsLoading.value = true
   try {
-    const now = new Date()
-    let startTime = new Date(now)
-    const interval = monitorInterval.value
-    switch (interval) {
-      case '1m': startTime.setHours(now.getHours() - 1); break
-      case '5m': startTime.setHours(now.getHours() - 6); break
-      case '1h': startTime.setDate(now.getDate() - 1); break
-    }
+    const startTime = new Date(monitorDateRange.value[0])
+    const endTime = new Date(monitorDateRange.value[1])
+    const interval = calcInterval(startTime, endTime)
     const params = {
       user_goods_id: userGoodsId.value,
       start: startTime.toISOString(),
-      end_time: now.toISOString(),
+      end_time: endTime.toISOString(),
       interval
     }
     const res = await getUserVmMetricsHistory(params)
@@ -1996,7 +2035,9 @@ const renderMetricsCharts = () => {
   const metrics = metricsData.value
   if (!Array.isArray(metrics) || !metrics.length) return
 
-  const showDate = monitorInterval.value === '1h'
+  const spanMs = monitorDateRange.value ? (new Date(monitorDateRange.value[1]).getTime() - new Date(monitorDateRange.value[0]).getTime()) : 600000
+  const showDate = spanMs >= 86400000
+  const symbolType = metrics.length < 30 ? 'circle' : 'none'
   const labelRotate = showDate ? 45 : 0
 
   const times = metrics.map(m => {
@@ -2014,7 +2055,7 @@ const renderMetricsCharts = () => {
 
   const baseGrid = { top: 10, right: 16, bottom: showDate ? 40 : 24, left: 50 }
   const makeXAxis = () => ({ type: 'category', data: times, boundaryGap: false, axisLabel: { fontSize: 10, rotate: labelRotate } })
-  const makeSeries = (name, data, color) => ({ name, type: 'line', smooth: true, symbol: 'none', areaStyle: { opacity: 0.15 }, lineStyle: { width: 2, color }, itemStyle: { color }, data })
+  const makeSeries = (name, data, color) => ({ name, type: 'line', smooth: true, symbol: symbolType, areaStyle: { opacity: 0.15 }, lineStyle: { width: 2, color }, itemStyle: { color }, data })
 
   if (cpuChartRef.value) {
     if (!cpuChart) cpuChart = echarts.init(cpuChartRef.value)
diff --git a/src/views/virtualization/HostDetail.vue b/src/views/virtualization/HostDetail.vue
index d6f6320..979fb67 100644
--- a/src/views/virtualization/HostDetail.vue
+++ b/src/views/virtualization/HostDetail.vue
@@ -137,10 +137,19 @@
           <div class="section-block">
             <div class="section-header">
               <h3 class="section-title">监控指标</h3>
-              <div style="display: flex; align-items: center; gap: 8px;">
-                <el-select v-model="historyTimeRange" size="small" style="width: 120px" @change="loadHistoricalMetrics">
-                  <el-option v-for="option in historyTimeOptions" :key="option.value" :label="option.label" :value="option.value" />
-                </el-select>
+              <div style="display: flex; align-items: center; gap: 8px; flex-wrap: wrap">
+                <el-date-picker
+                  v-model="monitorDateRange"
+                  type="datetimerange"
+                  range-separator="至"
+                  start-placeholder="开始时间"
+                  end-placeholder="结束时间"
+                  size="small"
+                  style="width: 360px"
+                  :shortcuts="monitorShortcuts"
+                  @change="loadHistoricalMetrics"
+                />
+                <span style="font-size:12px;color:#909399;white-space:nowrap">粒度: {{ currentIntervalLabel }}</span>
                 <el-button size="small" :icon="Refresh" @click="loadHistoricalMetrics" :loading="historicalMetricsLoading">刷新</el-button>
               </div>
             </div>
@@ -710,46 +719,57 @@ const latestMetrics = computed(() => {
   return arr[arr.length - 1]
 })
 
-// 历史指标时间范围
-const historyTimeRange = ref('1m') // 1m, 5m, 1h, 1d
-const historyTimeOptions = [
-  { label: '最近1分钟', value: '1m' },
-  { label: '最近5分钟', value: '5m' },
-  { label: '最近1小时', value: '1h' },
-  { label: '最近1天', value: '1d' },
+const makeDefaultRange = () => {
+  const now = new Date()
+  return [new Date(now.getTime() - 10 * 60 * 1000), now]
+}
+const monitorDateRange = ref(makeDefaultRange())
+
+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] } },
 ]
 
-// 加载历史指标数据
+function calcInterval(startTime, endTime) {
+  const spanMin = (endTime.getTime() - startTime.getTime()) / 60000
+  if (spanMin < 30) return '1m'
+  if (spanMin < 60) return '3m'
+  if (spanMin < 360) return '5m'
+  if (spanMin < 720) return '15m'
+  if (spanMin < 1440) return '30m'
+  if (spanMin < 4320) return '1h'
+  if (spanMin < 10080) return '2h'
+  if (spanMin < 43200) return '6h'
+  if (spanMin < 129600) return '12h'
+  return '1d'
+}
+
+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]))
+  return intervalLabelMap[iv] || iv
+})
+
 const loadHistoricalMetrics = async () => {
   if (!serviceId.value || !hostId.value) return
-  
+  if (!monitorDateRange.value || monitorDateRange.value.length < 2) return
   historicalMetricsLoading.value = true
   try {
-    // 计算时间范围
-    const now = new Date()
-    let startTime = new Date()
-    
-    switch (historyTimeRange.value) {
-      case '1m':
-        startTime.setMinutes(now.getMinutes() - 1)
-        break
-      case '5m':
-        startTime.setMinutes(now.getMinutes() - 5)
-        break
-      case '1h':
-        startTime.setHours(now.getHours() - 1)
-        break
-      case '1d':
-        startTime.setDate(now.getDate() - 1)
-        break
-    }
-    
+    const startTime = new Date(monitorDateRange.value[0])
+    const endTime = new Date(monitorDateRange.value[1])
+    const interval = calcInterval(startTime, endTime)
     const params = {
       service_id: serviceId.value,
       host_id: hostId.value,
       start: startTime.toISOString(),
-      end_time: now.toISOString(),
-      interval: { '1m': '1m', '5m': '5m', '1h': '1h', '1d': '1d' }[historyTimeRange.value] || '5m'
+      end_time: endTime.toISOString(),
+      interval
     }
     
     const res = await getMetricsHistory(params)
@@ -782,14 +802,14 @@ const renderHistoricalCharts = () => {
   const metrics = historicalMetricsData.value
   if (!Array.isArray(metrics) || !metrics.length) return
 
-  const range = historyTimeRange.value
-  const showDate = range === '7d' || range === '24h'
-  const symbolType = range === '7d' ? 'circle' : 'none'
+  const spanMs = monitorDateRange.value ? (new Date(monitorDateRange.value[1]).getTime() - new Date(monitorDateRange.value[0]).getTime()) : 0
+  const showDate = spanMs >= 12 * 3600 * 1000
+  const symbolType = spanMs >= 7 * 86400 * 1000 ? 'circle' : 'none'
   const labelRotate = showDate ? 45 : 0
 
   const times = metrics.map(m => {
     const date = new Date(m.bucket)
-    if (range === '7d') return date.toLocaleDateString('zh-CN', { month: '2-digit', day: '2-digit', hour: '2-digit', minute: '2-digit' })
+    if (showDate) return date.toLocaleDateString('zh-CN', { month: '2-digit', day: '2-digit', hour: '2-digit', minute: '2-digit' })
     return date.toLocaleTimeString('zh-CN', { hour12: false, hour: '2-digit', minute: '2-digit' })
   })
 
diff --git a/src/views/virtualization/VmDetail.vue b/src/views/virtualization/VmDetail.vue
index b78dbee..9a58e7c 100644
--- a/src/views/virtualization/VmDetail.vue
+++ b/src/views/virtualization/VmDetail.vue
@@ -538,10 +538,19 @@
           <div class="section-block">
             <div class="section-header">
               <h3 class="section-title">监控指标</h3>
-              <div style="display: flex; align-items: center; gap: 8px">
-                <el-select v-model="historyTimeRange" size="small" style="width: 120px" @change="loadHistoricalMetrics">
-                  <el-option v-for="option in historyTimeOptions" :key="option.value" :label="option.label" :value="option.value" />
-                </el-select>
+              <div style="display: flex; align-items: center; gap: 8px; flex-wrap: wrap">
+                <el-date-picker
+                  v-model="monitorDateRange"
+                  type="datetimerange"
+                  range-separator="至"
+                  start-placeholder="开始时间"
+                  end-placeholder="结束时间"
+                  size="small"
+                  style="width: 360px"
+                  :shortcuts="monitorShortcuts"
+                  @change="loadHistoricalMetrics"
+                />
+                <span style="font-size:12px;color:#909399;white-space:nowrap">粒度: {{ currentIntervalLabel }}</span>
                 <el-button size="small" :icon="Refresh" @click="loadHistoricalMetrics" :loading="historicalMetricsLoading">刷新</el-button>
               </div>
             </div>
@@ -1657,14 +1666,44 @@ let isPageActive = false
 
 const historicalMetricsData = ref(null)
 const historicalMetricsLoading = ref(false)
-const historyTimeRange = ref('1h')
-const historyTimeOptions = [
-  { label: '最近1分钟', value: '1m' },
-  { label: '最近5分钟', value: '5m' },
-  { label: '最近1小时', value: '1h' },
-  { label: '最近1天', value: '1d' }
+
+const makeDefaultRange = () => {
+  const now = new Date()
+  return [new Date(now.getTime() - 10 * 60 * 1000), now]
+}
+const monitorDateRange = ref(makeDefaultRange())
+
+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] } },
 ]
 
+function calcInterval(startTime, endTime) {
+  const spanMin = (endTime.getTime() - startTime.getTime()) / 60000
+  if (spanMin < 30) return '1m'
+  if (spanMin < 60) return '3m'
+  if (spanMin < 360) return '5m'
+  if (spanMin < 720) return '15m'
+  if (spanMin < 1440) return '30m'
+  if (spanMin < 4320) return '1h'
+  if (spanMin < 10080) return '2h'
+  if (spanMin < 43200) return '6h'
+  if (spanMin < 129600) return '12h'
+  return '1d'
+}
+
+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]))
+  return intervalLabelMap[iv] || iv
+})
+
 const latestMetrics = computed(() => {
   const arr = historicalMetricsData.value
   if (!Array.isArray(arr) || !arr.length) return null
@@ -1704,23 +1743,19 @@ const vmMemPercent = (m) => {
 
 const loadHistoricalMetrics = async () => {
   if (!serviceId.value || !detail.value?.name) return
+  if (!monitorDateRange.value || monitorDateRange.value.length < 2) return
   historicalMetricsLoading.value = true
   try {
-    const now = new Date()
-    let startTime = new Date()
-    switch (historyTimeRange.value) {
-      case '1m': startTime.setMinutes(now.getMinutes() - 1); break
-      case '5m': startTime.setMinutes(now.getMinutes() - 5); break
-      case '1h': startTime.setHours(now.getHours() - 1); break
-      case '1d': startTime.setDate(now.getDate() - 1); break
-    }
+    const startTime = new Date(monitorDateRange.value[0])
+    const endTime = new Date(monitorDateRange.value[1])
+    const interval = calcInterval(startTime, endTime)
     const params = {
       service_id: serviceId.value,
       host_id: vmHostId.value,
       vm_name: detail.value.name,
       start: startTime.toISOString(),
-      end_time: now.toISOString(),
-      interval: { '1m': '1m', '5m': '5m', '1h': '1h', '1d': '1d' }[historyTimeRange.value] || '5m'
+      end_time: endTime.toISOString(),
+      interval
     }
     const res = await getMetricsHistory(params)
     const body = res?.data
@@ -1742,8 +1777,8 @@ const renderHistoricalCharts = () => {
   const metrics = historicalMetricsData.value
   if (!Array.isArray(metrics) || !metrics.length) return
 
-  const range = historyTimeRange.value
-  const showDate = range === '1d'
+  const spanMs = monitorDateRange.value ? (new Date(monitorDateRange.value[1]).getTime() - new Date(monitorDateRange.value[0]).getTime()) : 0
+  const showDate = spanMs >= 12 * 3600 * 1000
   const symbolType = showDate ? 'circle' : 'none'
   const labelRotate = showDate ? 45 : 0