diff --git a/nezha-fronted/src/components/charts/chartDataFormat.js b/nezha-fronted/src/components/charts/chartDataFormat.js
index eda266706..40968ce24 100644
--- a/nezha-fronted/src/components/charts/chartDataFormat.js
+++ b/nezha-fronted/src/components/charts/chartDataFormat.js
@@ -421,7 +421,7 @@ function timeFormat34 (value) {
   return bus.timeFormate(parseInt(value), 'YYYY-MM-DD HH:mm:ss')
 }
 function timeFormat35 (value) {
-  return bus.timeFormate(parseInt(value), 'MM/DD/yyyy h:mm:ss A')
+  return bus.timeFormate(parseInt(value), 'MM/DD/yyyy h:mm:ss a')
 }
 // unit转化配置信息
 /*