diff --git a/src/views/index.vue b/src/views/index.vue
index a338bad..b87a8b5 100644
--- a/src/views/index.vue
+++ b/src/views/index.vue
@@ -428,6 +428,7 @@ const updateFrequencyChart = (tabValue: any) => {
   if (frequencyChartInstance) {
     frequencyChartInstance.dispose();
   }
+  deviceType.value=''
   initFrequencyChart(tabValue, '');
 };
 const handleDeviceTypeChange = (all) => {