diff --git a/src/views/Discover/Performance/FreqChart.vue b/src/views/Discover/Performance/FreqChart.vue
index 1a685be..8db3204 100644
--- a/src/views/Discover/Performance/FreqChart.vue
+++ b/src/views/Discover/Performance/FreqChart.vue
@@ -1,5 +1,5 @@
 <template>
-    <Chart type="line" :data="freqChartData" :options="freqChartOptions" class="h-96" />
+    <Chart type="line" :data="primeVueSetDataState" :options="primeVueSetOptionsState" class="h-96" />
 </template>
 
 <script>
@@ -19,51 +19,23 @@ const cloneDeep = (obj) => JSON.parse(JSON.stringify(obj));
 // 試著把 chart 獨立成一個 vue component
 // 企圖防止 PrimeVue 誤用其他圖表 option 值的 bug
 export default {
-  setup() {
+  props: {
+    chartData: {
+      type: Object,
+    },
+    content: {
+      type: Object,
+    },
+    yUnit: {
+      type: String,
+    },
+  }, 
+  setup(props) {
     const performanceStore = usePerformanceStore();
 
-    const freqChartData = computed(() => performanceStore.freqChartData);
-    const originalFreqChartOptions = computed(() => performanceStore.freqChartOptions);
-    const minX = computed(() => performanceStore.freqChartXData.minX);
-    const maxX = computed(() => performanceStore.freqChartXData.maxX);
-    const xData = computed(() => performanceStore.freqChartXData.xData);
-    const content = computed(() => performanceStore.freqChartXData.content);
     const customizedScaleOption = computed(() => {});
-
-    const updatedFreqChartOptions = ref(cloneDeep(originalFreqChartOptions.value));
-
-    const customizeOptionsFunc = () => {
-        // Customize X axis ticks due to different differences between min and max of data group
-        // Compare page and Performance page share the same logic
-      const formatToSet = setTimeStringFormatBaseOnTimeDifference(minX.value, maxX.value);
-      const ticksOfXAxis = mapTimestampToAxisTicksByFormat(xData.value, formatToSet);
-
-
-      customizedScaleOption.value = getCustomizedScaleOption(
-        knownScaleLineChartOptions, {
-            customizeOptions: {
-            content, ticksOfXAxis,
-            }        
-        });
-    };
-
-    const newTicksCallback = (value, index, values) => {
-      return value; // 沒有單位，只有數值，因為是取計算數量
-    };
-
-    const updateTicksCallback = () => {
-
-        //在這裡額外宣告本圖表的 callback， 區分跟其他圖表的 callback，避免共用 option 造成不預期的共用與混淆
-      if (updatedFreqChartOptions.value.scales && updatedFreqChartOptions.value.scales.y) {
-        updatedFreqChartOptions.value = customizedScaleOption;
-        updatedFreqChartOptions.value.scales.y.ticks.callback = newTicksCallback;
-      }
-    };
-
-    watch(originalFreqChartOptions, (newOptions) => {
-      updatedFreqChartOptions.value = cloneDeep(newOptions);
-    });
-
+    const primeVueSetDataState = ref(null);
+    const primeVueSetOptionsState = ref(null);
     
     /**
      * Compare page and Performance have this same function.
@@ -102,7 +74,7 @@ export default {
                 },
             },
           },
-      };       
+      };
     };
 
     /** Compare page and Performance have this same function.
@@ -140,14 +112,91 @@ export default {
         };
     };
 
+    const getLineChartPrimeVueSetting = (chartData, content) => {
+      let datasets;
+      let minX = chartData?.x_axis?.min;
+      let maxX = chartData?.x_axis?.max;
+      let maxY = chartData?.y_axis?.max;
+      let xData;
+      let primeVueSetData = {};
+      let primeVueSetOption = {};
+      const getMoment = (time)=> {
+        return this.$moment(time).format('YYYY/M/D hh:mm:ss')
+      };
+
+      datasets = chartData.data;
+      xData = chartData.data.map(item => new Date(item.x).getTime());
+      
+      // Customize X axis ticks due to different differences between min and max of data group
+      // Compare page and Performance page share the same logic
+      const formatToSet = setTimeStringFormatBaseOnTimeDifference(minX, maxX);
+      const ticksOfXAxis = mapTimestampToAxisTicksByFormat(xData, formatToSet);
+      const customizedScaleOption = getCustomizedScaleOption(
+        knownScaleLineChartOptions, {
+          customizeOptions: {
+            content, ticksOfXAxis,
+          }        
+      });
+  
+      primeVueSetData = {
+        labels: xData,
+        datasets: [
+          {
+            label: content.title,
+            data: datasets,
+            fill: false,
+            tension: 0, // 貝茲曲線張力
+            borderColor: '#0099FF',
+          }
+        ]
+      };
+      primeVueSetOption = {
+        responsive: true,
+        maintainAspectRatio: false,
+        layout: {
+          padding: {
+            top: 16,
+            left: 8,
+            right: 8,
+          }
+        },
+        plugins: {
+          legend: false, // 圖例
+          tooltip: {
+            displayColors: false,
+            titleFont: {weight: 'normal'},
+            callbacks: {
+              title: function(context) {
+                return `${content.x}: ${getMoment(context[0].parsed.x)}`;
+              }
+            },
+          },
+          title: {
+            display: false,
+          },
+        },
+        scales: customizedScaleOption,
+      };
+
+      primeVueSetOption.scales.y.ticks.precision = 0; // y 軸顯示小數點後 0 位
+      primeVueSetOption.plugins.tooltip.callbacks.label = function(context) {
+        return `${content.y}: ${context.parsed.y}`;
+      };
+      primeVueSetOption.scales.y.ticks.callback = function (value, index, ticks) {
+        return value;
+      };
+      primeVueSetDataState.value = primeVueSetData;
+      primeVueSetOptionsState.value = primeVueSetOption;
+    };
+
     onMounted(() => {
-      customizeOptionsFunc();
+      getLineChartPrimeVueSetting(props.chartData, props.content);
     });
 
     return {
-      freqChartData,
-      updatedFreqChartOptions,
-      updateTicksCallback,
+      ...props,
+      primeVueSetDataState,
+      primeVueSetOptionsState,
     };
   }
 };
diff --git a/src/views/Discover/Performance/index.vue b/src/views/Discover/Performance/index.vue
index 3227396..d52d62c 100644
--- a/src/views/Discover/Performance/index.vue
+++ b/src/views/Discover/Performance/index.vue
@@ -119,7 +119,7 @@
                   <li class="bg-neutral-10 mb-4 p-1 border border-neutral-300 rounded">
                     <span class="block font-bold text-sm leading-loose text-center my-2">{{ contentData.freq.title }}</span>
                     <!-- <Chart type="line" :data="freqData" :options="freqOptions" class="h-96" /> -->
-                    <FreqChart/>
+                    <FreqChart v-if="performanceData" :chartData="performanceData?.freq?.cases" :content="contentData?.freq" yUnit="count"/>
                   </li>
                   <li class="bg-neutral-10 p-1 border border-neutral-300 rounded">
                     <span class="block font-bold text-sm leading-loose text-center my-2">{{ contentData.casesByTask.title }}</span>
@@ -152,8 +152,6 @@ import { simpleTimeLabel, followTimeLabel, dateLabel,
  } from '@/module/timeLabel.js';
 import FreqChart from './FreqChart.vue';
 
-const myCloneDeep = (obj) => JSON.parse(JSON.stringify(obj));
-
 const knownScaleLineChartOptions = {
   x: {
     type: 'time',
@@ -219,7 +217,7 @@ export default {
   },
   components: {
     StatusBar,
-    FreqChart
+    FreqChart,
   },
   data() {
     return {
@@ -341,6 +339,11 @@ export default {
         case 'count': // 次數 10 個點
           datasets = chartData.data;
           xData = chartData.data.map(item => new Date(item.x).getTime());
+
+          // special case, freq chart case
+          if(whichCaller === "freqChartCaller") {
+            this.setFreqChartXData({ minX, maxX, xData, content});
+          }
           break;
       }
       
@@ -354,12 +357,7 @@ export default {
             content, ticksOfXAxis,
           }        
       });
-
-      // special case, freq chart case
-      if(whichCaller === "freqChartCaller") {
-        this.setFreqChartXData({ minX, maxX, xData, content});
-      }
-      
+  
       primeVueSetData = {
         labels: xData,
         datasets: [
@@ -794,10 +792,6 @@ export default {
     } else {
       [this.avgWaitingTimeByEdgeData, this.avgWaitingTimeByEdgeOptions] = [null, null]
     }
-    [this.freqData, this.freqOptions] = this.getLineChart(this.performanceData.freq.cases, this.contentData.freq, 'count', "freqChartCaller");
-
-    this.setFreqChartData(this.freqData);
-    this.setFreqChartOptions(this.freqOptions);
 
     [this.casesByTaskData, this.casesByTaskOptions] = this.getHorizontalBarChart(this.performanceData.freq.cases_by_task,
       this.contentData.casesByTask, true, 'count');