diff --git a/kernel/api/riff.go b/kernel/api/riff.go
index a1ec3fead..cdd2d0b99 100644
--- a/kernel/api/riff.go
+++ b/kernel/api/riff.go
@@ -135,14 +135,17 @@ func getNotebookRiffDueCards(c *gin.Context) {
 
 	notebookID := arg["notebook"].(string)
 	reviewedCardIDs := getReviewedCards(arg)
-	cards, err := model.GetNotebookDueFlashcards(notebookID, reviewedCardIDs)
+	cards, unreviewedCount, err := model.GetNotebookDueFlashcards(notebookID, reviewedCardIDs)
 	if nil != err {
 		ret.Code = -1
 		ret.Msg = err.Error()
 		return
 	}
 
-	ret.Data = cards
+	ret.Data = map[string]interface{}{
+		"cards":           cards,
+		"unreviewedCount": unreviewedCount,
+	}
 }
 
 func getTreeRiffDueCards(c *gin.Context) {
@@ -156,14 +159,17 @@ func getTreeRiffDueCards(c *gin.Context) {
 
 	rootID := arg["rootID"].(string)
 	reviewedCardIDs := getReviewedCards(arg)
-	cards, err := model.GetTreeDueFlashcards(rootID, reviewedCardIDs)
+	cards, unreviewedCount, err := model.GetTreeDueFlashcards(rootID, reviewedCardIDs)
 	if nil != err {
 		ret.Code = -1
 		ret.Msg = err.Error()
 		return
 	}
 
-	ret.Data = cards
+	ret.Data = map[string]interface{}{
+		"cards":           cards,
+		"unreviewedCount": unreviewedCount,
+	}
 }
 
 func getRiffDueCards(c *gin.Context) {
@@ -177,14 +183,17 @@ func getRiffDueCards(c *gin.Context) {
 
 	deckID := arg["deckID"].(string)
 	reviewedCardIDs := getReviewedCards(arg)
-	cards, err := model.GetDueFlashcards(deckID, reviewedCardIDs)
+	cards, unreviewedCount, err := model.GetDueFlashcards(deckID, reviewedCardIDs)
 	if nil != err {
 		ret.Code = -1
 		ret.Msg = err.Error()
 		return
 	}
 
-	ret.Data = cards
+	ret.Data = map[string]interface{}{
+		"cards":           cards,
+		"unreviewedCount": unreviewedCount,
+	}
 }
 
 func getReviewedCards(arg map[string]interface{}) (ret []string) {
diff --git a/kernel/model/flashcard.go b/kernel/model/flashcard.go
index 1ea03dea8..0113b5bab 100644
--- a/kernel/model/flashcard.go
+++ b/kernel/model/flashcard.go
@@ -228,7 +228,7 @@ func ReviewFlashcard(deckID, cardID string, rating riff.Rating, reviewedCardIDs
 		return
 	}
 
-	dueCards := getDueFlashcards(deckID, reviewedCardIDs)
+	dueCards, _ := getDueFlashcards(deckID, reviewedCardIDs)
 	if 1 > len(dueCards) {
 		// 该卡包中没有待复习的卡片了，说明最后一张卡片已经复习完了，清空撤销缓存和跳过缓存
 		reviewCardCache = map[string]riff.Card{}
@@ -277,7 +277,7 @@ func newFlashcard(card riff.Card, blockID, deckID string, now time.Time) *Flashc
 	}
 }
 
-func GetNotebookDueFlashcards(boxID string, reviewedCardIDs []string) (ret []*Flashcard, err error) {
+func GetNotebookDueFlashcards(boxID string, reviewedCardIDs []string) (ret []*Flashcard, unreviewedCount int, err error) {
 	deckLock.Lock()
 	defer deckLock.Unlock()
 
@@ -320,7 +320,7 @@ func GetNotebookDueFlashcards(boxID string, reviewedCardIDs []string) (ret []*Fl
 		return
 	}
 
-	cards := getDeckDueCards(deck, reviewedCardIDs, treeBlockIDs)
+	cards, unreviewdCnt := getDeckDueCards(deck, reviewedCardIDs, treeBlockIDs)
 	now := time.Now()
 	for _, card := range cards {
 		blockID := card.BlockID()
@@ -329,10 +329,11 @@ func GetNotebookDueFlashcards(boxID string, reviewedCardIDs []string) (ret []*Fl
 	if 1 > len(ret) {
 		ret = []*Flashcard{}
 	}
+	unreviewedCount = unreviewdCnt
 	return
 }
 
-func GetTreeDueFlashcards(rootID string, reviewedCardIDs []string) (ret []*Flashcard, err error) {
+func GetTreeDueFlashcards(rootID string, reviewedCardIDs []string) (ret []*Flashcard, unreviewedCount int, err error) {
 	deckLock.Lock()
 	defer deckLock.Unlock()
 
@@ -347,7 +348,7 @@ func GetTreeDueFlashcards(rootID string, reviewedCardIDs []string) (ret []*Flash
 	}
 
 	treeBlockIDs := getTreeSubTreeChildBlocks(rootID)
-	cards := getDeckDueCards(deck, reviewedCardIDs, treeBlockIDs)
+	cards, unreviewedCnt := getDeckDueCards(deck, reviewedCardIDs, treeBlockIDs)
 	now := time.Now()
 	for _, card := range cards {
 		blockID := card.BlockID()
@@ -356,6 +357,7 @@ func GetTreeDueFlashcards(rootID string, reviewedCardIDs []string) (ret []*Flash
 	if 1 > len(ret) {
 		ret = []*Flashcard{}
 	}
+	unreviewedCount = unreviewedCnt
 	return
 }
 
@@ -395,7 +397,7 @@ func getTreeSubTreeChildBlocks(rootID string) (treeBlockIDs []string) {
 	return
 }
 
-func GetDueFlashcards(deckID string, reviewedCardIDs []string) (ret []*Flashcard, err error) {
+func GetDueFlashcards(deckID string, reviewedCardIDs []string) (ret []*Flashcard, unreviewedCount int, err error) {
 	deckLock.Lock()
 	defer deckLock.Unlock()
 
@@ -405,22 +407,22 @@ func GetDueFlashcards(deckID string, reviewedCardIDs []string) (ret []*Flashcard
 	}
 
 	if "" == deckID {
-		ret = getAllDueFlashcards(reviewedCardIDs)
+		ret, unreviewedCount = getAllDueFlashcards(reviewedCardIDs)
 		return
 	}
 
-	ret = getDueFlashcards(deckID, reviewedCardIDs)
+	ret, unreviewedCount = getDueFlashcards(deckID, reviewedCardIDs)
 	return
 }
 
-func getDueFlashcards(deckID string, reviewedCardIDs []string) (ret []*Flashcard) {
+func getDueFlashcards(deckID string, reviewedCardIDs []string) (ret []*Flashcard, unreviewedCount int) {
 	deck := Decks[deckID]
 	if nil == deck {
 		logging.LogWarnf("deck not found [%s]", deckID)
 		return
 	}
 
-	cards := getDeckDueCards(deck, reviewedCardIDs, nil)
+	cards, unreviewedCnt := getDeckDueCards(deck, reviewedCardIDs, nil)
 	now := time.Now()
 	for _, card := range cards {
 		blockID := card.BlockID()
@@ -434,13 +436,14 @@ func getDueFlashcards(deckID string, reviewedCardIDs []string) (ret []*Flashcard
 	if 1 > len(ret) {
 		ret = []*Flashcard{}
 	}
+	unreviewedCount = unreviewedCnt
 	return
 }
 
-func getAllDueFlashcards(reviewedCardIDs []string) (ret []*Flashcard) {
+func getAllDueFlashcards(reviewedCardIDs []string) (ret []*Flashcard, unreviewedCount int) {
 	now := time.Now()
 	for _, deck := range Decks {
-		cards := getDeckDueCards(deck, reviewedCardIDs, nil)
+		cards, unreviewedCnt := getDeckDueCards(deck, reviewedCardIDs, nil)
 		for _, card := range cards {
 			blockID := card.BlockID()
 			if nil == treenode.GetBlockTree(blockID) {
@@ -448,6 +451,7 @@ func getAllDueFlashcards(reviewedCardIDs []string) (ret []*Flashcard) {
 			}
 
 			ret = append(ret, newFlashcard(card, blockID, deck.ID, now))
+			unreviewedCount += unreviewedCnt
 		}
 	}
 	if 1 > len(ret) {
@@ -817,10 +821,27 @@ func getDeckIDs() (deckIDs []string) {
 	return
 }
 
-func getDeckDueCards(deck *riff.Deck, reviewedCardIDs, blockIDs []string) (ret []riff.Card) {
+func getDeckDueCards(deck *riff.Deck, reviewedCardIDs, blockIDs []string) (ret []riff.Card, unreviewedCount int) {
 	ret = []riff.Card{}
 	dues := deck.Dues()
 
+	var tmp []riff.Card
+	for _, c := range dues {
+		if 0 < len(blockIDs) && !gulu.Str.Contains(c.BlockID(), blockIDs) {
+			continue
+		}
+		tmp = append(tmp, c)
+
+		if 0 < len(reviewedCardIDs) {
+			if !gulu.Str.Contains(c.ID(), reviewedCardIDs) {
+				unreviewedCount++
+			}
+		} else {
+			unreviewedCount++
+		}
+	}
+	dues = tmp
+
 	newCount := 0
 	reviewCount := 0
 	for _, c := range dues {
@@ -828,10 +849,6 @@ func getDeckDueCards(deck *riff.Deck, reviewedCardIDs, blockIDs []string) (ret [
 			continue
 		}
 
-		if 0 < len(blockIDs) && !gulu.Str.Contains(c.BlockID(), blockIDs) {
-			continue
-		}
-
 		fsrsCard := c.Impl().(*fsrs.Card)
 		if fsrs.New == fsrsCard.State {
 			newCount++