diff --git a/web/src/components/AnswerResult.tsx b/web/src/components/AnswerResult.tsx
index 7d02a51..a249f41 100644
--- a/web/src/components/AnswerResult.tsx
+++ b/web/src/components/AnswerResult.tsx
@@ -180,7 +180,9 @@ const AnswerResult: React.FC<AnswerResultProps> = ({
                 </Text>
                 <Text strong style={{ color: '#52c41a' }}>
                   {formatAnswer(
-                    answerResult.correct_answer || (answerResult.correct ? selectedAnswer : '暂无')
+                    answerResult.correct_answer !== undefined && answerResult.correct_answer !== null
+                      ? answerResult.correct_answer
+                      : (answerResult.correct ? selectedAnswer : '暂无')
                   )}
                 </Text>
               </div>