diff --git a/frontend/src/views/chart/chart/common/common.js b/frontend/src/views/chart/chart/common/common.js
index d4bf4e371e..e1e5de1641 100644
--- a/frontend/src/views/chart/chart/common/common.js
+++ b/frontend/src/views/chart/chart/common/common.js
@@ -216,12 +216,13 @@ export function seniorCfg(chart_option, chart) {
         }
       }
     }
+    // begin mark line settings
+    chart_option.series[0].markLine = {
+      symbol: 'none',
+      data: []
+    }
     if (senior.assistLine && senior.assistLine.length > 0) {
       if (chart_option.series && chart_option.series.length > 0) {
-        chart_option.series[0].markLine = {
-          symbol: 'none',
-          data: []
-        }
         const customStyle = JSON.parse(chart.customStyle)
         let xAxis, yAxis
         if (customStyle.xAxis) {