diff --git a/backend/roomroot-jwgl/src/main/java/com/roomroot/jwgl/service/impl/TimetableGridServiceImpl.java b/backend/roomroot-jwgl/src/main/java/com/roomroot/jwgl/service/impl/TimetableGridServiceImpl.java
index 595b0a54..18589f9e 100644
--- a/backend/roomroot-jwgl/src/main/java/com/roomroot/jwgl/service/impl/TimetableGridServiceImpl.java
+++ b/backend/roomroot-jwgl/src/main/java/com/roomroot/jwgl/service/impl/TimetableGridServiceImpl.java
@@ -347,6 +347,7 @@ public class TimetableGridServiceImpl implements TimetableGridService {
                 week.getDays().add(day);
             }
             vo.getWeeks().add(week);
+            weekStart = weekStart.plusDays(7);
         }
         return vo;
     }