diff --git a/frontend/src/views/machine/freqConverter/components/freqConverterDipChart.vue b/frontend/src/views/machine/freqConverter/components/freqConverterDipChart.vue
index 803361d..ba958e5 100644
--- a/frontend/src/views/machine/freqConverter/components/freqConverterDipChart.vue
+++ b/frontend/src/views/machine/freqConverter/components/freqConverterDipChart.vue
@@ -126,8 +126,8 @@ const sortedChartPoints = computed(() => {
 const sortedCharacteristicCurveData = computed(() => {
   return [...characteristicCurveData.value].sort((a, b) => {
     // 保留1位小数
-    let aResidualVoltage = Math.floor(a.residualVoltage * 10) / 10
-    let bResidualVoltage = Math.floor(b.residualVoltage * 10) / 10
+    let aResidualVoltage = Math.floor(a.residualVoltage)
+    let bResidualVoltage = Math.floor(b.residualVoltage)
     if (aResidualVoltage != bResidualVoltage) {
       return a.residualVoltage - b.residualVoltage;
     } else {