diff --git a/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseScheduleSessionService.java b/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseScheduleSessionService.java
index 4e441b71..26ec4ff5 100644
--- a/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseScheduleSessionService.java
+++ b/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseScheduleSessionService.java
@@ -43,6 +43,7 @@ import java.util.stream.Collectors;
 
 import static cn.hutool.core.collection.CollUtil.join;
 import static cn.hutool.core.date.DatePattern.NORM_DATE_PATTERN;
+import static cn.hutool.core.date.DateUtil.offsetDay;
 import static cn.hutool.core.date.DateUtil.parseDate;
 import static com.ibeetl.admin.core.util.DateUtil.weekNumberInList;
 import static java.util.stream.Collectors.groupingBy;
@@ -239,7 +240,8 @@ public class TeacherOpenCourseScheduleSessionService extends CoreBaseService<Tea
         // 偏移周
         DateTime startTime = parseDate(options.getStartTime());
         DateTime endTime = DateUtil.offsetWeek(startTime, options.getWeekNum());
-        List<DateTime> dateTimes = DateUtil.rangeToList(startTime, endTime, DateField.DAY_OF_YEAR);
+        // 结束时间向前偏移一天
+        List<DateTime> dateTimes = DateUtil.rangeToList(startTime, offsetDay(endTime, -1), DateField.DAY_OF_YEAR);
 
         // 开课星期，排序。数据直观一些
         List<Object> sortWeekDetail = options.getWeekDetail().stream().sorted().collect(Collectors.toList());