diff --git a/Services/ImportBackgroundService.cs b/Services/ImportBackgroundService.cs
index 5f8119f..7628ad0 100644
--- a/Services/ImportBackgroundService.cs
+++ b/Services/ImportBackgroundService.cs
@@ -664,6 +664,7 @@ public class ImportBackgroundService : BackgroundService
                 if (string.IsNullOrEmpty(cell1)) break;
 
                 var r = new RecruitScore();
+                r.Id = Guid.NewGuid();
                 r.ExamId = reader.GetValue(1)?.ToString();
 
                 if (!string.IsNullOrEmpty(r.ExamId) && recruitsDict.TryGetValue(r.ExamId, out var recruit))