diff --git a/enlish-service/src/main/java/com/yinlihupo/enlish/service/controller/ExamWordsController.java b/enlish-service/src/main/java/com/yinlihupo/enlish/service/controller/ExamWordsController.java
index 4f95347..8cf4e11 100644
--- a/enlish-service/src/main/java/com/yinlihupo/enlish/service/controller/ExamWordsController.java
+++ b/enlish-service/src/main/java/com/yinlihupo/enlish/service/controller/ExamWordsController.java
@@ -50,6 +50,9 @@ public class ExamWordsController {
         }
         try {
             ExamWordsDO examWordsDO = examWordsService.generateExamWords(gradeId, level, studentIds);
+            if (examWordsDO == null || examWordsDO.getWordIds().isEmpty()) {
+                throw new RuntimeException("没有单词");
+            }
             List<VocabularyBankDO> vocabularyBankDOS = vocabularyService.findVocabularyBankDOListById(examWordsDO.getWordIds());
             List<Word> assessmentWords = vocabularyBankDOS.stream().map(vocabularyBankDO -> Word.builder()
                     .id(vocabularyBankDO.getId())