diff --git a/YD_Event.Application/Event/Dtos/UserCompetitionDtos.cs b/YD_Event.Application/Event/Dtos/UserCompetitionDtos.cs
index 9354807..732165a 100644
--- a/YD_Event.Application/Event/Dtos/UserCompetitionDtos.cs
+++ b/YD_Event.Application/Event/Dtos/UserCompetitionDtos.cs
@@ -212,6 +212,11 @@ public class UserEventDetailOutput
     /// 报名ID (如果已报名)
     /// </summary>
     public long? RegistrationId { get; set; }
+
+    /// <summary>
+    /// 上级项目类型名称
+    /// </summary>
+    public string? ParentProjectTypeName { get; set; }
 }
 
 /// <summary>
diff --git a/YD_Event.Application/Event/UserEventRegistrationService.cs b/YD_Event.Application/Event/UserEventRegistrationService.cs
index 003d42e..ffdf119 100644
--- a/YD_Event.Application/Event/UserEventRegistrationService.cs
+++ b/YD_Event.Application/Event/UserEventRegistrationService.cs
@@ -34,6 +34,7 @@ public class UserEventRegistrationService : IDynamicApiController, ITransient
     private readonly ISqlSugarRepository<EventUnit> _unitRepository;
     private readonly ISqlSugarRepository<EventProject> _eventProjectRepository;
     private readonly ISqlSugarRepository<YD_Event.Core.Entities.Project> _projectRepository;
+    private readonly ISqlSugarRepository<ProjectType> _projectTypeRepository;
     private readonly ISqlSugarRepository<EventRegistration> _registrationRepository;
     private readonly ISqlSugarRepository<EventRegistrationItem> _registrationItemRepository;
     private readonly ISqlSugarRepository<EventRegistrationPerson> _registrationPersonRepository;
@@ -57,6 +58,7 @@ public class UserEventRegistrationService : IDynamicApiController, ITransient
         ISqlSugarRepository<EventUnit> unitRepository,
         ISqlSugarRepository<EventProject> eventProjectRepository,
         ISqlSugarRepository<YD_Event.Core.Entities.Project> projectRepository,
+        ISqlSugarRepository<ProjectType> projectTypeRepository,
         ISqlSugarRepository<EventRegistration> registrationRepository,
         ISqlSugarRepository<EventRegistrationItem> registrationItemRepository,
         ISqlSugarRepository<EventRegistrationPerson> registrationPersonRepository,
@@ -79,6 +81,7 @@ public class UserEventRegistrationService : IDynamicApiController, ITransient
         _unitRepository = unitRepository;
         _eventProjectRepository = eventProjectRepository;
         _projectRepository = projectRepository;
+        _projectTypeRepository = projectTypeRepository;
         _registrationRepository = registrationRepository;
         _registrationItemRepository = registrationItemRepository;
         _registrationPersonRepository = registrationPersonRepository;
@@ -190,7 +193,32 @@ public class UserEventRegistrationService : IDynamicApiController, ITransient
 
         var eventProjects = await _eventProjectRepository.GetListAsync(x => x.EventId == id);
         var projectIds = eventProjects.Select(x => x.ProjectId).Distinct().ToList();
-        var baseProjects = await _projectRepository.GetListAsync(x => projectIds.Contains(x.Id) && x.Status == AvailabilityStatus.Enable);
+        var baseProjects = await _projectRepository.AsQueryable()
+            .LeftJoin<ProjectType>((p, t) => p.ProjectTypeId == t.Id)
+            .Where(p => projectIds.Contains(p.Id) && p.Status == AvailabilityStatus.Enable)
+            .Select((p, t) => new { p.Id, ProjectTypeId = t.Id })
+            .ToListAsync();
+        
+        // 获取所有项目类型
+        var allProjectTypes = await _projectTypeRepository.AsQueryable()
+            .Where(t => !t.DeleteMark && t.Status == AvailabilityStatus.Enable)
+            .ToListAsync();
+        
+        // 获取上级项目类型名称（如果有项目，取第一个项目的上级类型名称）
+        string? parentProjectTypeName = null;
+        if (baseProjects.Any())
+        {
+            var firstProject = baseProjects.First();
+            var currentProjectType = allProjectTypes.FirstOrDefault(t => t.Id == firstProject.ProjectTypeId);
+            if (currentProjectType != null && currentProjectType.ParentId > 0)
+            {
+                var parentProjectType = allProjectTypes.FirstOrDefault(t => t.Id == currentProjectType.ParentId);
+                parentProjectTypeName = parentProjectType?.Name;
+            }
+        }
+        
+        // 获取完整的基础项目信息
+        var fullBaseProjects = await _projectRepository.GetListAsync(x => projectIds.Contains(x.Id) && x.Status == AvailabilityStatus.Enable);
 
         var completionStats = await _projectService.GetProjectStatisticsBatchAsync(
             projectIds, 
@@ -198,7 +226,7 @@ public class UserEventRegistrationService : IDynamicApiController, ITransient
 
         output.Projects = eventProjects.Select(ep => 
         {
-            var p = baseProjects.FirstOrDefault(b => b.Id == ep.ProjectId);
+            var p = fullBaseProjects.FirstOrDefault(b => b.Id == ep.ProjectId);
             var completionCount = 0;
             if (p != null && completionStats.TryGetValue(p.Id, out var count))
             {
@@ -212,6 +240,9 @@ public class UserEventRegistrationService : IDynamicApiController, ITransient
                 CompletionCount = completionCount
             };
         }).Where(x => !string.IsNullOrEmpty(x.Name)).ToList();
+        
+        // 添加上级项目类型名称
+        output.ParentProjectTypeName = parentProjectTypeName;
 
         var userId = _authManager.UserId;
         var registration = await _registrationRepository.GetFirstAsync(x => x.EventId == id && x.CreatedUserId == userId && !x.DeleteMark);
diff --git a/YD_Event.Application/YD_Event.Application.xml b/YD_Event.Application/YD_Event.Application.xml
index 310114b..e88f4fe 100644
--- a/YD_Event.Application/YD_Event.Application.xml
+++ b/YD_Event.Application/YD_Event.Application.xml
@@ -4385,6 +4385,11 @@
             报名ID (如果已报名)
             </summary>
         </member>
+        <member name="P:YD_Event.Application.Event.Dtos.UserEventDetailOutput.ParentProjectTypeName">
+            <summary>
+            上级项目类型名称
+            </summary>
+        </member>
         <member name="T:YD_Event.Application.Event.Dtos.UserEventLimitOutput">
             <summary>
             用户端赛事限制输出