diff --git a/src/main/java/org/springblade/modules/martial/service/impl/MartialScheduleServiceImpl.java b/src/main/java/org/springblade/modules/martial/service/impl/MartialScheduleServiceImpl.java
index 0451030..0018118 100644
--- a/src/main/java/org/springblade/modules/martial/service/impl/MartialScheduleServiceImpl.java
+++ b/src/main/java/org/springblade/modules/martial/service/impl/MartialScheduleServiceImpl.java
@@ -390,6 +390,10 @@ public class MartialScheduleServiceImpl extends ServiceImpl<MartialScheduleMappe
 						groupDTO.setVenueName(defaultVenueName);
 						groupDTO.setTimeSlotIndex(0);
 						groupDTO.setTimeSlot(null);
+						// Calculate estimated duration: participants * project duration per person
+						int duration = subGroupAthletes.size() * (project.getEstimatedDuration() != null ? project.getEstimatedDuration() : 2);
+						groupDTO.setEstimatedDuration(duration);
+						log.info("设置estimatedDuration: {} for group: {}", duration, groupDTO.getTitle());
 						
 						// 生成参赛者列表
 						List<ParticipantDTO> participantDTOs = new ArrayList<>();
@@ -446,6 +450,10 @@ public class MartialScheduleServiceImpl extends ServiceImpl<MartialScheduleMappe
 		groupDTO.setVenueName(venueName);
 		groupDTO.setTimeSlotIndex(0);
 		groupDTO.setTimeSlot(null);
+						// Calculate estimated duration: participants * project duration per person
+						int duration = athletes.size() * (project.getEstimatedDuration() != null ? project.getEstimatedDuration() : 2);
+						groupDTO.setEstimatedDuration(duration);
+						log.info("设置estimatedDuration: {} for group: {}", duration, groupDTO.getTitle());
 		
 		List<ParticipantDTO> participantDTOs = new ArrayList<>();
 		int sortOrder = 1;