diff --git a/YD_Event.Application/Event/EventScoreService.cs b/YD_Event.Application/Event/EventScoreService.cs
index 4dd2124..2fdf453 100644
--- a/YD_Event.Application/Event/EventScoreService.cs
+++ b/YD_Event.Application/Event/EventScoreService.cs
@@ -1555,42 +1555,68 @@ public class EventScoreService : BaseService<EventResult>, ITransient
     /// 导出证书
     /// </summary>
     [DisplayName("导出证书")]
-    [HttpGet]
-    public async Task<IActionResult> ExportCertificate([FromQuery] ScoreQueryInput input)
+    public async Task<IActionResult> ExportCertificate(ScoreQueryInput input)
     {
-        var list = await _certificateRepository.AsQueryable()
-            .LeftJoin<EventResult>((c, r) => c.ResultId == r.Id)
-            .LeftJoin<EventRegistration>((c, r, reg) => c.RegistrationId == reg.Id)
-            .LeftJoin<EventProject>((c, r, reg, ep) => c.ProjectId == ep.Id)
-            .LeftJoin<YD_Event.Core.Entities.Project>((c, r, reg, ep, p) => ep.ProjectId == p.Id)
-            .Where((c, r, reg, ep, p) => c.EventId == input.EventId)
-            .WhereIF(input.ProjectId.HasValue, (c, r, reg, ep, p) => c.ProjectId == input.ProjectId)
-            .WhereIF(!string.IsNullOrWhiteSpace(input.GroupName), (c, r, reg, ep, p) => c.GroupName == input.GroupName)
-            .WhereIF(!string.IsNullOrWhiteSpace(input.Name), (c, r, reg, ep, p) => c.ParticipantName.Contains(input.Name))
-            .Select((c, r, reg, ep, p) => new CertificateExportDto
-            {
-                CertificateNo = c.CertificateNo,
-                ParticipantName = c.ParticipantName,
-                ProjectName = p.Name,
-                GroupName = c.GroupName,
-                UnitName = reg.TeamName,
-                Score = r.Score,
-                Rank = r.Rank,
-                CertificateType = c.CertificateType == 1 ? "冠军证书" :
-                                  c.CertificateType == 2 ? "亚军证书" :
-                                  c.CertificateType == 3 ? "季军证书" :
-                                  c.CertificateType == 4 ? "优胜证书" : "参与证书",
-                IssuedTime = c.IssuedTime
+        var certificates = await _certificateRepository.AsQueryable()
+            .Where(c => c.EventId == input.EventId && !c.DeleteMark)
+            .WhereIF(input.ProjectId.HasValue, c => c.ProjectId == input.ProjectId.Value)
+            .WhereIF(!string.IsNullOrWhiteSpace(input.GroupName), c => c.GroupName == input.GroupName)
+            .WhereIF(!string.IsNullOrWhiteSpace(input.Name), c => c.ParticipantName.Contains(input.Name))
+            .Where(c => c.CertificateStatus >= 1 && !string.IsNullOrEmpty(c.CertificateUrl))
+            .Select(c => new 
+            { 
+                c.Id, 
+                c.CertificateNo, 
+                c.ParticipantName, 
+                c.GroupName, 
+                c.CertificateUrl,
+                c.CertificateType
             })
             .ToListAsync();
 
-        using var stream = new MemoryStream();
-        await stream.SaveAsAsync(list);
-        var bytes = stream.ToArray();
-        
-        return new FileContentResult(bytes, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
+        if (!certificates.Any())
         {
-            FileDownloadName = $"证书列表_{DateTime.Now:yyyyMMddHHmmss}.xlsx"
+            throw Oops.Bah("暂无已生成的证书可导出");
+        }
+
+        using var memoryStream = new MemoryStream();
+        using (var archive = new System.IO.Compression.ZipArchive(memoryStream, System.IO.Compression.ZipArchiveMode.Create, true))
+        {
+            using var httpClient = new HttpClient();
+            int successCount = 0;
+            int failCount = 0;
+
+            foreach (var cert in certificates)
+            {
+                try
+                {
+                    var pdfBytes = await httpClient.GetByteArrayAsync(cert.CertificateUrl);
+                    var fileName = $"{cert.ParticipantName}_{cert.GroupName}_{cert.CertificateNo}.pdf";
+                    fileName = string.Join("_", fileName.Split(Path.GetInvalidFileNameChars()));
+
+                    var entry = archive.CreateEntry(fileName, System.IO.Compression.CompressionLevel.Optimal);
+                    using var entryStream = entry.Open();
+                    await entryStream.WriteAsync(pdfBytes);
+                    successCount++;
+                }
+                catch (Exception ex)
+                {
+                    _logger.LogWarning(ex, "导出证书失败: CertificateId={Id}, CertificateNo={CertificateNo}", 
+                        cert.Id, cert.CertificateNo);
+                    failCount++;
+                }
+            }
+
+            if (successCount == 0)
+            {
+                throw Oops.Bah("所有证书导出失败");
+            }
+        }
+
+        memoryStream.Position = 0;
+        return new FileContentResult(memoryStream.ToArray(), "application/zip")
+        {
+            FileDownloadName = $"证书导出_{DateTime.Now:yyyyMMddHHmmss}.zip"
         };
     }