diff --git a/frontend/hooks/review/useReviewSession.ts b/frontend/hooks/review/useReviewSession.ts
index da7adc5..77b943a 100644
--- a/frontend/hooks/review/useReviewSession.ts
+++ b/frontend/hooks/review/useReviewSession.ts
@@ -8,6 +8,7 @@ interface CardState extends Flashcard {
   isCompleted: boolean
   originalOrder: number
   synonyms?: string[]
+  difficultyLevelNumeric: number // 添加缺少的屬性
 }
 
 interface QuizItem {
@@ -96,7 +97,8 @@ const generateQuizItemsFromFlashcards = (flashcards: Flashcard[]): QuizItem[] =>
       wrongCount: 0,
       isCompleted: false,
       originalOrder: order / 2, // 原始詞卡的順序
-      synonyms: []
+      synonyms: [],
+      difficultyLevelNumeric: card.masteryLevel || 1 // 添加缺少的屬性
     }
 
     // 為每張詞卡生成兩種測驗模式