diff --git a/src/utils/date-util.js b/src/utils/date-util.js
index 4a4bc2da..d3df920e 100644
--- a/src/utils/date-util.js
+++ b/src/utils/date-util.js
@@ -106,7 +106,9 @@ export function timestampToList (time) {
  * @returns {number}
  */
 export function millTimestampDiffFromTz () {
-  return parseInt(localStorage.getItem(storageKey.timezoneLocalOffset)) * 3600 * 1000 - window.$dayJs.tz().utcOffset() * 60 * 1000
+  const localOffset = Number(localStorage.getItem(storageKey.timezoneLocalOffset)) * 3600 * 1000
+  const serverOffset = window.$dayJs.tz().utcOffset() * 60 * 1000
+  return localOffset - serverOffset
 }
 /**
  * echarts时间类型横坐标formatter