diff --git a/src/main/java/cn/teammodel/controller/admin/service/impl/TeacherServiceImpl.java b/src/main/java/cn/teammodel/controller/admin/service/impl/TeacherServiceImpl.java
index a81466e..71789f5 100644
--- a/src/main/java/cn/teammodel/controller/admin/service/impl/TeacherServiceImpl.java
+++ b/src/main/java/cn/teammodel/controller/admin/service/impl/TeacherServiceImpl.java
@@ -957,8 +957,9 @@ public class TeacherServiceImpl implements TeacherService {
         try {
             Instant instantSTime = Instant.ofEpochMilli(teacherDto.getStartTime());
             Instant instantETime = Instant.ofEpochMilli(teacherDto.getEndTime());
-            LocalDate localDateSTime = instantSTime.atZone(TimeZone.getDefault().toZoneId()).toLocalDate();
-            LocalDate localDateETime = instantETime.atZone(TimeZone.getDefault().toZoneId()).toLocalDate();
+            ZoneId zoneId = ZoneId.of("Asia/Shanghai");
+            LocalDate localDateSTime = instantSTime.atZone(zoneId).toLocalDate();
+            LocalDate localDateETime = instantETime.atZone(zoneId).toLocalDate();
             DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
             String sTime = localDateSTime.format(formatter);
             String eTime = localDateETime.format(formatter);