diff --git a/YD_Event.Application/Event/UnifiedRegistrationService.cs b/YD_Event.Application/Event/UnifiedRegistrationService.cs
index 4c8856c..3187add 100644
--- a/YD_Event.Application/Event/UnifiedRegistrationService.cs
+++ b/YD_Event.Application/Event/UnifiedRegistrationService.cs
@@ -2877,8 +2877,19 @@ public class UnifiedRegistrationService : ITransient
                 await _registrationPersonRepository.DeleteAsync(x => allCancelMemberIds.Contains(x.Id));
                 _logger.LogInformation("已删除队员：报名ID={RegistrationId}, 队员ID列表={PersonIds}", 
                     registration.Id, string.Join(", ", allCancelMemberIds));
+                
+                // 检查并删除空的 RegistrationItem（所有成员都被删除的项）
+                var remainingPersons = await _registrationPersonRepository.GetListAsync(x => x.RegistrationId == registration.Id);
+                var remainingRegistrationItemIds = new HashSet<long>(remainingPersons.Select(p => p.RegistrationItemId));
+                var itemsToDelete = items.Where(item => !remainingRegistrationItemIds.Contains(item.Id)).ToList();
+                if (itemsToDelete.Count > 0)
+                {
+                    await _registrationItemRepository.DeleteAsync(itemsToDelete);
+                    _logger.LogInformation("已删除空团队：报名ID={RegistrationId}, 团队ID列表={ItemIds}", 
+                        registration.Id, string.Join(", ", itemsToDelete.Select(i => i.Id)));
+                }
 
-                var remainingPersonsCount = await _registrationPersonRepository.CountAsync(x => x.RegistrationId == registration.Id);
+                var remainingPersonsCount = remainingPersons.Count;
                 registration.TotalPersonCount = remainingPersonsCount;
 
                 if (remainingPersonsCount > 0)
@@ -2935,8 +2946,19 @@ public class UnifiedRegistrationService : ITransient
                 await _registrationPersonRepository.DeleteAsync(x => allCancelMemberIds.Contains(x.Id));
                 _logger.LogInformation("已删除队员：报名ID={RegistrationId}, 队员ID列表={PersonIds}", 
                     registration.Id, string.Join(", ", allCancelMemberIds));
+                
+                // 检查并删除空的 RegistrationItem（所有成员都被删除的项）
+                var remainingPersons = await _registrationPersonRepository.GetListAsync(x => x.RegistrationId == registration.Id);
+                var remainingRegistrationItemIds = new HashSet<long>(remainingPersons.Select(p => p.RegistrationItemId));
+                var itemsToDelete = items.Where(item => !remainingRegistrationItemIds.Contains(item.Id)).ToList();
+                if (itemsToDelete.Count > 0)
+                {
+                    await _registrationItemRepository.DeleteAsync(itemsToDelete);
+                    _logger.LogInformation("已删除空团队：报名ID={RegistrationId}, 团队ID列表={ItemIds}", 
+                        registration.Id, string.Join(", ", itemsToDelete.Select(i => i.Id)));
+                }
 
-                var remainingPersonsCount = await _registrationPersonRepository.CountAsync(x => x.RegistrationId == registration.Id);
+                var remainingPersonsCount = remainingPersons.Count;
                 registration.TotalPersonCount = remainingPersonsCount;
 
                 if (remainingPersonsCount > 0)