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 cc09b22..6d13348 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
@@ -20,6 +20,7 @@ import com.project.information.domain.entity.ProductLineEntity;
 import com.project.information.domain.service.ProductLineBaseService;
 import com.project.information.utils.MinIoUtils;
 import com.project.task.domain.dto.TaskUserDTO;
+import com.project.task.domain.entity.TaskUserEntity;
 import com.project.task.domain.service.TaskUserBaseService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -112,8 +113,11 @@ public class AdminSearchExamRecordDomainServiceImpl implements AdminSearchExamRe
             dto.setPassHtml(ExamRecordPassTextEnum.Fail.getHtml());
         }
 
-        TaskUserDTO taskUserDTO = taskUserBaseService.getById(dto.getTaskUserId()).toDTO(TaskUserDTO::new);
-        dto.setUserName(taskUserDTO.getUserName());
+        TaskUserEntity taskUser = taskUserBaseService.getById(dto.getTaskUserId());
+        if (taskUser != null){
+            TaskUserDTO taskUserDTO = taskUserBaseService.getById(dto.getTaskUserId()).toDTO(TaskUserDTO::new);
+            dto.setUserName(taskUserDTO.getUserName());
+        }
 
         return dto;
     }