diff --git a/src/views/ems/report/currentSteamCurve/index.vue b/src/views/ems/report/currentSteamCurve/index.vue
index ecb828b..e4966fb 100644
--- a/src/views/ems/report/currentSteamCurve/index.vue
+++ b/src/views/ems/report/currentSteamCurve/index.vue
@@ -565,11 +565,13 @@ export default {
       const timeData = processedData.map(e => e.recordTime)
       const valueData = processedData.map(e => e[valueField])
       
-      // 计算平均值时排除中断点
+      // 计算平均值时排除中断点和无效值
       const validData = processedData.filter(item => !item.isBreakPoint)
       const validValues = validData.map(e => parseFloat(e[valueField]))
-      const average = validValues.length > 0 ? 
-        (validValues.reduce((a, b) => a + b, 0) / validValues.length).toFixed(2) : 0
+      // 进一步过滤掉 NaN 值
+      const validNumericValues = validValues.filter(v => !isNaN(v));
+      const average = validNumericValues.length > 0 ? 
+        (validNumericValues.reduce((a, b) => a + b, 0) / validNumericValues.length).toFixed(2) : 0
       
       return {
         processedData,