diff --git a/Tiobon.Core.Services/Ghre/Ghre_StudyRecordServices.cs b/Tiobon.Core.Services/Ghre/Ghre_StudyRecordServices.cs
index d5a8cfaf..fa5c1475 100644
--- a/Tiobon.Core.Services/Ghre/Ghre_StudyRecordServices.cs
+++ b/Tiobon.Core.Services/Ghre/Ghre_StudyRecordServices.cs
@@ -1123,7 +1123,7 @@ FROM Ghre_OpenClass A
      JOIN Ghre_StaffGroup B ON A.StaffGroupId = B.Id
      LEFT JOIN Ghre_Course C ON A.LinkId = C.Id
      LEFT JOIN Ghre_CourseScene D ON A.LinkId = D.Id
-     LEFT JOIN Ghre_Exam E ON A.ExamId = E.Id
+     LEFT JOIN Ghre_ExamRecord E ON A.ExamId = E.ExamId AND E.StaffId = '{staffId}'
      LEFT JOIN Ghre_StudyRecord F ON A.Id = F.OpenClassId
 WHERE A.Status !='Temporary' AND  EXISTS (
 		SELECT 1
@@ -1330,7 +1330,8 @@ WHERE A.Status !='Temporary' AND  EXISTS (
             //if (x.CourseBeginDate != null && x.CourseEndDate != null)
             //    if (x.StudyProgress >= 100 || !(x.CourseBeginDate.Value.Date <= DateTime.Now.Date && x.CourseEndDate.Value.Date >= DateTime.Now.Date))
             //        x.DisableStudyBtn = true;
-
+            if(!x.ExamId.IsNull())
+                x.ShowExamBtn = true;
             if (x.StudyProgress < 100 || x.ExamId.IsNull())
                 x.DisableExamBtn = true;
             if (x.FeedbackOrderId.IsNull())