diff --git a/frontend/src/views/machine/freqConverter/components/freqConverterDipChart.vue b/frontend/src/views/machine/freqConverter/components/freqConverterDipChart.vue
index fd03c36..7d5d77a 100644
--- a/frontend/src/views/machine/freqConverter/components/freqConverterDipChart.vue
+++ b/frontend/src/views/machine/freqConverter/components/freqConverterDipChart.vue
@@ -1,4 +1,4 @@
-<template>
+<template>
   <el-card class="dip-chart-card" shadow="never">
     <template #header>
       <div class="card-header">
@@ -17,9 +17,9 @@
             导出数据
           </el-button>
           <el-button
+            v-if="!props.autoDrawCurve"
             type="primary"
             plain
-            :loading="curveLoading"
             class="draw-curve-button"
             @click="drawCharacteristicCurve"
           >
@@ -41,7 +41,6 @@ import { ElMessage } from 'element-plus'
 import { Document, Download } from '@element-plus/icons-vue'
 import * as XLSX from 'xlsx'
 import MyEchart from '@/components/echarts/line/index.vue'
-import { getFreqConverterSCurve } from '@/api/device/freqConverter'
 
 type ChartPointStatus = 'pass' | 'fail'
 
@@ -62,16 +61,19 @@ const props = defineProps<{
   selectedMapping?: Record<string, any> | null
   webMsgSend?: any
   resultData?: any
+  autoDrawCurve?: boolean
 }>()
 
 const STATUS_COLOR_MAP: Record<ChartPointStatus, string> = {
-  pass: '#1d4ed8',
-  fail: '#111111'
+  pass: '#4e73df',
+  fail: '#4b4b4b'
 }
 
+const CHARACTERISTIC_POINT_COLOR = '#ff4d4f'
+
 const chartPoints = ref<ChartPoint[]>([])
 const characteristicCurveData = ref<Array<[number, number]>>([])
-const curveLoading = ref(false)
+const characteristicCurveVisible = ref(false)
 const chartRef = ref<any>(null)
 
 const selectedMappingText = computed(() => {
@@ -90,21 +92,23 @@ const positiveDurations = computed(() => {
 })
 
 const xAxisMin = computed(() => {
-  if (!positiveDurations.value.length) {
-    return 0.001
-  }
-
-  const minValue = Math.min(...positiveDurations.value)
-  return Math.min(0.001, Number(minValue.toFixed(3)))
+  return 0.001
+  // if (!positiveDurations.value.length) {
+  //   return 0.001
+  // }
+  //
+  // const minValue = Math.min(...positiveDurations.value)
+  // return Math.min(0.001, Number(minValue.toFixed(3)))
 })
 
 const xAxisMax = computed(() => {
-  if (!positiveDurations.value.length) {
-    return 60
-  }
-
-  const maxValue = Math.max(...positiveDurations.value)
-  return Math.max(Number((maxValue * 1.05).toFixed(3)), 60)
+  return 1000
+  // if (!positiveDurations.value.length) {
+  //   return 60
+  // }
+  //
+  // const maxValue = Math.max(...positiveDurations.value)
+  // return Math.max(Number((maxValue * 1.05).toFixed(3)), 60)
 })
 
 const sortedChartPoints = computed(() => {
@@ -127,105 +131,34 @@ const sortedCharacteristicCurveData = computed(() => {
   })
 })
 
-const clampValue = (value: number, min: number, max: number) => {
-  return Math.min(max, Math.max(min, value))
-}
-
-const buildExtendedCurvePoint = (points: Array<[number, number]>, targetDuration: number) => {
-  if (!points.length || !Number.isFinite(targetDuration) || targetDuration <= 0) {
-    return null as [number, number] | null
-  }
-
-  const lastPoint = points[points.length - 1]
-  if (!lastPoint || targetDuration === lastPoint[0]) {
-    return null as [number, number] | null
-  }
-
-  if (points.length === 1) {
-    return [targetDuration, lastPoint[1]] as [number, number]
-  }
-
-  const recentDistinctPoints: Array<[number, number]> = []
-  for (let index = points.length - 1; index >= 0 && recentDistinctPoints.length < 3; index -= 1) {
-    const point = points[index]
-    if (recentDistinctPoints.some(item => item[0] === point[0])) {
-      continue
-    }
-
-    recentDistinctPoints.unshift(point)
-  }
-
-  if (recentDistinctPoints.length < 2) {
-    return [targetDuration, lastPoint[1]] as [number, number]
-  }
-
-  const toLogDuration = (value: number) => Math.log10(value)
-  const getSlope = (start: [number, number], end: [number, number]) => {
-    const deltaX = toLogDuration(end[0]) - toLogDuration(start[0])
-    if (!Number.isFinite(deltaX) || deltaX === 0) {
-      return null
-    }
-
-    return (end[1] - start[1]) / deltaX
-  }
-
-  let slope = getSlope(
-    recentDistinctPoints[recentDistinctPoints.length - 2],
-    recentDistinctPoints[recentDistinctPoints.length - 1]
-  )
-
-  if (recentDistinctPoints.length >= 3) {
-    const previousSlope = getSlope(recentDistinctPoints[0], recentDistinctPoints[1])
-    if (previousSlope !== null && slope !== null) {
-      slope = previousSlope * 0.35 + slope * 0.65
-    }
-  }
-
-  if (slope === null) {
-    return [targetDuration, lastPoint[1]] as [number, number]
-  }
-
-  const deltaX = toLogDuration(targetDuration) - toLogDuration(lastPoint[0])
-  if (!Number.isFinite(deltaX)) {
-    return null as [number, number] | null
-  }
-
-  const predictedResidualVoltage = lastPoint[1] + slope * deltaX
-  const nearbyResidualVoltages = recentDistinctPoints.map(item => item[1])
-  const minResidualVoltage = Math.max(0, Math.min(...nearbyResidualVoltages) - 15)
-  const maxResidualVoltage = Math.min(100, Math.max(...nearbyResidualVoltages) + 15)
-
-  return [
-    targetDuration,
-    Number(clampValue(predictedResidualVoltage, minResidualVoltage, maxResidualVoltage).toFixed(2))
-  ] as [number, number]
-}
-
-const inferredCharacteristicCurvePoint = computed(() => {
-  return buildExtendedCurvePoint(sortedCharacteristicCurveData.value, xAxisMax.value)
-})
-
 const solidCharacteristicCurveSeriesData = computed(() => {
-  return sortedCharacteristicCurveData.value.map(item => [item[0], item[1], 'Backend point'])
-})
-
-const dashedCharacteristicCurveSeriesData = computed(() => {
-  const lastPoint = sortedCharacteristicCurveData.value[sortedCharacteristicCurveData.value.length - 1]
-  const extensionPoint = inferredCharacteristicCurvePoint.value
-
-  if (!lastPoint || !extensionPoint) {
-    return []
+  if (!characteristicCurveVisible.value) {
+    return [] as Array<[number, number, string]>
   }
 
-  return [
-    {
-      value: [lastPoint[0], lastPoint[1], 'Backend point'],
-      symbol: 'none'
-    },
-    {
-      value: [extensionPoint[0], extensionPoint[1], 'Inferred point']
-    }
-  ]
+  return sortedCharacteristicCurveData.value.map(item => [item[0], item[1], '特性曲线'])
+})
+
+const characteristicCurvePointSeriesData = computed(() => {
+  return sortedCharacteristicCurveData.value.map(item => ({
+    value: [item[0], item[1], '特性点']
+  }))
+})
+
+const passPointSeriesData = computed(() => {
+  return sortedChartPoints.value
+    .filter(item => item.status === 'pass')
+    .map(item => ({
+      value: [item.duration, item.residualVoltage, getStatusText(item.status)]
+    }))
+})
+
+const failPointSeriesData = computed(() => {
+  return sortedChartPoints.value
+    .filter(item => item.status === 'fail')
+    .map(item => ({
+      value: [item.duration, item.residualVoltage, getStatusText(item.status)]
+    }))
 })
 
 const hasChartData = computed(() => {
@@ -374,65 +307,6 @@ const normalizePoint = (source: Record<string, any>): ChartPoint | null => {
   }
 }
 
-const normalizeCurveData = (source: unknown) => {
-  if (!Array.isArray(source)) {
-    return [] as Array<[number, number]>
-  }
-
-  return source
-    .map(item => {
-      if (Array.isArray(item) && item.length >= 2) {
-        const duration = Number(item[0])
-        const residualVoltage = Number(item[1])
-        if (Number.isFinite(duration) && Number.isFinite(residualVoltage) && duration > 0) {
-          return [duration, residualVoltage] as [number, number]
-        }
-      }
-
-      if (item && typeof item === 'object') {
-        const record = item as Record<string, any>
-        const tolerant = normalizeTolerantValue(record.tolerant)
-        if (tolerant !== null && tolerant !== 2) {
-          return null
-        }
-
-        const duration = normalizeDuration(record)
-        const residualVoltage = normalizeResidualVoltageValue(record)
-        if (duration !== null && residualVoltage !== null && duration > 0) {
-          return [duration, residualVoltage] as [number, number]
-        }
-      }
-
-      return null
-    })
-    .filter((item): item is [number, number] => !!item)
-}
-
-const extractCurveData = (payload: any) => {
-  if (!payload) {
-    return [] as Array<[number, number]>
-  }
-
-  const candidates = [
-    payload,
-    payload?.data,
-    payload?.data?.records,
-    payload?.data?.points,
-    payload?.points,
-    payload?.records,
-    payload?.list
-  ]
-
-  for (const candidate of candidates) {
-    const normalized = normalizeCurveData(candidate)
-    if (normalized.length) {
-      return normalized
-    }
-  }
-
-  return [] as Array<[number, number]>
-}
-
 const extractCharacteristicCurvePoints = (payload: any) => {
   const result: Array<[number, number]> = []
   const seen = new Set<string>()
@@ -472,6 +346,22 @@ const extractCharacteristicCurvePoints = (payload: any) => {
   return result
 }
 
+const mergeCharacteristicCurvePoints = (points: Array<[number, number]>) => {
+  if (!points.length) {
+    return
+  }
+
+  const existingPointMap = new Map(
+    characteristicCurveData.value.map(item => [`${item[0]}|${item[1]}`, item] as const)
+  )
+
+  points.forEach(item => {
+    existingPointMap.set(`${item[0]}|${item[1]}`, item)
+  })
+
+  characteristicCurveData.value = Array.from(existingPointMap.values())
+}
+
 const extractPoints = (payload: any) => {
   const result: ChartPoint[] = []
   const seen = new Set<string>()
@@ -511,35 +401,20 @@ const extractPoints = (payload: any) => {
   return result
 }
 
-const drawCharacteristicCurve = async () => {
-  const freqConverterId = props.selectedMapping?.freqConverterId
-  if (!freqConverterId) {
-    ElMessage.warning('未获取到变频器ID')
+const updateCharacteristicCurveVisibility = () => {
+  if (props.autoDrawCurve) {
+    characteristicCurveVisible.value = characteristicCurveData.value.length > 0
+  }
+}
+
+const drawCharacteristicCurve = () => {
+  if (!sortedCharacteristicCurveData.value.length) {
+    characteristicCurveVisible.value = false
+    ElMessage.warning('暂无特性曲线点')
     return
   }
 
-  curveLoading.value = true
-
-  try {
-    const result = await getFreqConverterSCurve({
-      converterId: freqConverterId
-    })
-
-    const normalizedCurveData = extractCurveData(result)
-
-    if (!normalizedCurveData.length) {
-      characteristicCurveData.value = []
-      ElMessage.warning('未获取到特性曲线数据')
-      return
-    }
-
-    characteristicCurveData.value = normalizedCurveData
-  } catch (error) {
-    console.error('draw characteristic curve failed:', error)
-    characteristicCurveData.value = []
-  } finally {
-    curveLoading.value = false
-  }
+  characteristicCurveVisible.value = true
 }
 
 const downloadChartImage = async () => {
@@ -577,24 +452,24 @@ const exportChartData = () => {
   if (sortedChartPoints.value.length) {
     const pointSheet = XLSX.utils.json_to_sheet(
       sortedChartPoints.value.map((item, index) => ({
-        '序号': index + 1,
-        '持续时间_s': item.duration,
-        '暂降幅值_%': item.residualVoltage,
-        '状态': getStatusText(item.status)
+        序号: index + 1,
+        持续时间_s: item.duration,
+        残余电压_pct: item.residualVoltage,
+        状态: getStatusText(item.status)
       }))
     )
-    XLSX.utils.book_append_sheet(workbook, pointSheet, '暂降点')
+    XLSX.utils.book_append_sheet(workbook, pointSheet, '耐受点')
   }
 
   if (sortedCharacteristicCurveData.value.length) {
     const curveSheet = XLSX.utils.json_to_sheet(
       sortedCharacteristicCurveData.value.map((item, index) => ({
-        '序号': index + 1,
-        '持续时间_s': item[0],
-        '暂降幅值_%': item[1]
+        序号: index + 1,
+        持续时间_s: item[0],
+        残余电压_pct: item[1]
       }))
     )
-    XLSX.utils.book_append_sheet(workbook, curveSheet, '特性曲线')
+    XLSX.utils.book_append_sheet(workbook, curveSheet, '特性点')
   }
 
   const workbookBuffer = XLSX.write(workbook, { bookType: 'xlsx', type: 'array' })
@@ -642,7 +517,7 @@ const chartOptions = computed(() => {
     legend: {
       top: 0,
       right: 0,
-      data: ['特性测试曲线']
+      data: ['特性曲线', '特性点', '耐受点', '不耐受点']
     },
     xAxis: {
       type: 'log',
@@ -676,7 +551,7 @@ const chartOptions = computed(() => {
     },
     yAxis: {
       type: 'value',
-      name: '暂降幅值',
+      name: '残余电压',
       min: 0,
       max: 100,
       interval: 10,
@@ -704,46 +579,45 @@ const chartOptions = computed(() => {
     dataZoom: [],
     series: [
       {
-        name: '特性测试曲线',
+        name: '特性曲线',
         type: 'line',
         smooth: true,
-        showSymbol: true,
-        symbolSize: 7,
+        showSymbol: false,
         lineStyle: {
-          color: '#ff2a2a',
+          color: CHARACTERISTIC_POINT_COLOR,
           width: 3
         },
         itemStyle: {
-          color: '#ff2a2a'
+          color: CHARACTERISTIC_POINT_COLOR
         },
         data: solidCharacteristicCurveSeriesData.value
       },
       {
-        name: '特性曲线延伸',
-        type: 'line',
-        smooth: true,
-        showSymbol: true,
-        symbolSize: 7,
-        lineStyle: {
-          color: '#ff2a2a',
-          width: 3,
-          type: 'dashed'
-        },
-        itemStyle: {
-          color: '#ff2a2a'
-        },
-        data: dashedCharacteristicCurveSeriesData.value
-      },
-      {
-        name: '暂降点',
+        name: '特性点',
         type: 'scatter',
         symbolSize: 10,
-        data: chartPoints.value.map(item => ({
-          value: [item.duration, item.residualVoltage, getStatusText(item.status)],
-          itemStyle: {
-            color: STATUS_COLOR_MAP[item.status]
-          }
-        }))
+        itemStyle: {
+          color: CHARACTERISTIC_POINT_COLOR
+        },
+        data: characteristicCurvePointSeriesData.value
+      },
+      {
+        name: '耐受点',
+        type: 'scatter',
+        symbolSize: 10,
+        itemStyle: {
+          color: STATUS_COLOR_MAP.pass
+        },
+        data: passPointSeriesData.value
+      },
+      {
+        name: '不耐受点',
+        type: 'scatter',
+        symbolSize: 10,
+        itemStyle: {
+          color: STATUS_COLOR_MAP.fail
+        },
+        data: failPointSeriesData.value
       }
     ],
     options: {
@@ -752,6 +626,14 @@ const chartOptions = computed(() => {
   }
 })
 
+watch(
+  () => props.autoDrawCurve,
+  newValue => {
+    characteristicCurveVisible.value = newValue ? characteristicCurveData.value.length > 0 : false
+  },
+  { immediate: true }
+)
+
 watch(
   () => props.webMsgSend,
   newValue => {
@@ -760,29 +642,21 @@ watch(
     }
 
     const nextPoints = extractPoints(newValue)
-    if (!nextPoints.length) {
-      const nextCurvePoints = extractCharacteristicCurvePoints(newValue)
-      if (nextCurvePoints.length) {
-        characteristicCurveData.value = nextCurvePoints
-      }
-      return
+    if (nextPoints.length) {
+      const existingPointMap = new Map(
+        chartPoints.value.map(item => [`${item.duration}|${item.residualVoltage}`, item] as const)
+      )
+
+      nextPoints.forEach(item => {
+        const key = `${item.duration}|${item.residualVoltage}`
+        existingPointMap.set(key, item)
+      })
+
+      chartPoints.value = Array.from(existingPointMap.values())
     }
 
-    const existingPointMap = new Map(
-      chartPoints.value.map(item => [`${item.duration}|${item.residualVoltage}`, item] as const)
-    )
-
-    nextPoints.forEach(item => {
-      const key = `${item.duration}|${item.residualVoltage}`
-      existingPointMap.set(key, item)
-    })
-
-    chartPoints.value = Array.from(existingPointMap.values())
-
-    const nextCurvePoints = extractCharacteristicCurvePoints(newValue)
-    if (nextCurvePoints.length) {
-      characteristicCurveData.value = nextCurvePoints
-    }
+    mergeCharacteristicCurvePoints(extractCharacteristicCurvePoints(newValue))
+    updateCharacteristicCurveVisibility()
   },
   { deep: true }
 )
@@ -795,10 +669,8 @@ watch(
     }
 
     chartPoints.value = extractPoints(newValue)
-    const nextCurvePoints = extractCharacteristicCurvePoints(newValue)
-    if (nextCurvePoints.length) {
-      characteristicCurveData.value = nextCurvePoints
-    }
+    characteristicCurveData.value = extractCharacteristicCurvePoints(newValue)
+    updateCharacteristicCurveVisibility()
   },
   { deep: true, immediate: true }
 )
@@ -808,6 +680,7 @@ watch(
   () => {
     chartPoints.value = []
     characteristicCurveData.value = []
+    characteristicCurveVisible.value = false
   }
 )
 </script>
@@ -856,11 +729,6 @@ watch(
   color: var(--el-text-color-secondary);
 }
 
-.draw-curve-button {
-  margin-top: -2px;
-  flex-shrink: 0;
-}
-
 .chart-wrapper {
   height: 400px;
 }
diff --git a/frontend/src/views/machine/freqConverter/components/freqConverterResultPopup.vue b/frontend/src/views/machine/freqConverter/components/freqConverterResultPopup.vue
index 143fa26..18daf64 100644
--- a/frontend/src/views/machine/freqConverter/components/freqConverterResultPopup.vue
+++ b/frontend/src/views/machine/freqConverter/components/freqConverterResultPopup.vue
@@ -13,6 +13,7 @@
         v-if="dialogVisible && selectedMapping"
         :selected-mapping="selectedMapping"
         :result-data="resultPayload"
+        :auto-draw-curve="true"
       />
 
       <el-empty v-else-if="!loading" description="暂无检测结果" />
diff --git a/frontend/src/views/machine/freqConverter/components/freqConverterTestPopup.vue b/frontend/src/views/machine/freqConverter/components/freqConverterTestPopup.vue
index a215489..25d6aa4 100644
--- a/frontend/src/views/machine/freqConverter/components/freqConverterTestPopup.vue
+++ b/frontend/src/views/machine/freqConverter/components/freqConverterTestPopup.vue
@@ -30,6 +30,7 @@
         :selected-mapping="selectedMapping"
         :web-msg-send="webSocketMessage"
         :result-data="historyResultData"
+        :auto-draw-curve="false"
       />
     </div>