diff --git a/src/views/spectrumAnalysis/beta-analysis.vue b/src/views/spectrumAnalysis/beta-analysis.vue
index 52953f6..bf089f3 100644
--- a/src/views/spectrumAnalysis/beta-analysis.vue
+++ b/src/views/spectrumAnalysis/beta-analysis.vue
@@ -27,7 +27,7 @@
         <div class="beta-gamma-analysis-main-charts">
           <div class="beta-gamma-analysis-main-charts-left">
             <beta-gamma-chart-container>
-              <template slot="title"> Beta-Gamma Spectrum: Sample </template>
+              <template slot="title"> Beta-Gamma Spectrum: {{ currSpectrum }} </template>
               <beta-gamma-spectrum
                 ref="betaChartRef"
                 :betaEnergyData="betaEnergyData"
@@ -89,7 +89,7 @@ const SampleType = [
   },
   {
     label: 'DetBg Data',
-    value: 'det',
+    value: 'detBg',
   },
 ]
 export default {
@@ -112,6 +112,7 @@ export default {
   data() {
     this.SampleType = SampleType
     return {
+      currSpectrum: '',
       isLoading: false,
       spectrumData: {}, // Detailed Infomation 信息
       spectraType: 'sample',
@@ -207,6 +208,8 @@ export default {
       }
     },
     changeChartByType(val) {
+      if (val == 'sample') this.currSpectrum = 'Sample'
+      if (val == 'detBg') this.currSpectrum = 'Det'
       this.roiParamList = []
       this.boundaryList = []
       this.ROILists = []