diff --git a/src/main/java/com/project/exam/domain/service/impl/AdminSearchExamRecordDomainServiceImpl.java b/src/main/java/com/project/exam/domain/service/impl/AdminSearchExamRecordDomainServiceImpl.java
index 78dedc3..cc09b22 100644
--- a/src/main/java/com/project/exam/domain/service/impl/AdminSearchExamRecordDomainServiceImpl.java
+++ b/src/main/java/com/project/exam/domain/service/impl/AdminSearchExamRecordDomainServiceImpl.java
@@ -100,7 +100,9 @@ public class AdminSearchExamRecordDomainServiceImpl implements AdminSearchExamRe
         dto.setPictureDTOList(pictureDTOList);
         if (Objects.nonNull(dto.getSubLineId())) {
             ProductLineEntity productLine = productLineBaseService.getById(dto.getSubLineId());
-            dto.setSubLineName(productLine.getName());
+            if (Objects.nonNull(productLine)) {
+                dto.setSubLineName(productLine.getName());
+            }
         }
         if (BooleanUtil.isTrue(dto.getPass())) {
             dto.setPassText(ExamRecordPassTextEnum.Pass.getValue());