diff --git a/src/views/spectrumAnalysis/components/Modals/AnalyzeInteractiveToolModal/index.vue b/src/views/spectrumAnalysis/components/Modals/AnalyzeInteractiveToolModal/index.vue
index 374841c..03e8b58 100644
--- a/src/views/spectrumAnalysis/components/Modals/AnalyzeInteractiveToolModal/index.vue
+++ b/src/views/spectrumAnalysis/components/Modals/AnalyzeInteractiveToolModal/index.vue
@@ -127,6 +127,7 @@
                   <a-input-number
                     v-model="model.tolerance"
                     :step="0.1"
+                    :min="0"
                     @change="handleToleranceChange"
                   ></a-input-number>
                 </a-form-model-item>
@@ -762,6 +763,7 @@ export default {
     async getSelPosNuclide(row) {
       this.model.possibleNuclide = ''
       this.model.identifiedNuclide = ''
+      this.model.tolerance = 0.5
 
       if (!row._possible) {
         this.$set(row, '_loading', true)