diff --git a/kernel/go.mod b/kernel/go.mod
index 22d953779..f998326e3 100644
--- a/kernel/go.mod
+++ b/kernel/go.mod
@@ -47,7 +47,7 @@ require (
 	github.com/siyuan-note/filelock v0.0.0-20230223100551-200cbe1cf84e
 	github.com/siyuan-note/httpclient v0.0.0-20230223101139-409ed0b4c5ff
 	github.com/siyuan-note/logging v0.0.0-20230223101545-ec2cbf198ffb
-	github.com/siyuan-note/riff v0.0.0-20221228031102-17d458a1217b
+	github.com/siyuan-note/riff v0.0.0-20230224070227-4514ccc3e496
 	github.com/steambap/captcha v1.4.1
 	github.com/studio-b12/gowebdav v0.0.0-20230203202212-3282f94193f2
 	github.com/vmihailenco/msgpack/v5 v5.3.5
diff --git a/kernel/go.sum b/kernel/go.sum
index b6adf3ddd..08b9c72b3 100644
--- a/kernel/go.sum
+++ b/kernel/go.sum
@@ -10,8 +10,6 @@ github.com/88250/gulu v1.2.3-0.20230223100136-26e5f16ac3c0 h1:hZn2F/kNKcxoK41Jhf
 github.com/88250/gulu v1.2.3-0.20230223100136-26e5f16ac3c0/go.mod h1:pTWnjt+6qUqNnP9xltswsJxgCBVu3C7eW09u48LWX0k=
 github.com/88250/lute v1.7.6-0.20230223100349-d4c62da413ce h1:PGos/Sz/SRVDPzToUgn/SBttEsAO5livLUWzoI+/bZ4=
 github.com/88250/lute v1.7.6-0.20230223100349-d4c62da413ce/go.mod h1:+wUqx/1kdFDbWtxn9LYJlaCOAeol2pjSO6w+WJTVQsg=
-github.com/88250/pdfcpu v0.3.14-0.20230223050947-68dec81c7661 h1:s8YOfk7TpajM8SBivP0ReIHmNfMQu20hWgEBc98D14w=
-github.com/88250/pdfcpu v0.3.14-0.20230223050947-68dec81c7661/go.mod h1:S5YT38L/GCjVjmB4PB84PymA1qfopjEhfhTNQilLpv4=
 github.com/88250/pdfcpu v0.3.14-0.20230224021324-e51076eb6390 h1:q2AR33VoQ87WYtvZ4pEvwj5gZkv22HK/yMlPWwF1oyc=
 github.com/88250/pdfcpu v0.3.14-0.20230224021324-e51076eb6390/go.mod h1:S5YT38L/GCjVjmB4PB84PymA1qfopjEhfhTNQilLpv4=
 github.com/88250/vitess-sqlparser v0.0.0-20210205111146-56a2ded2aba1 h1:48T899JQDwyyRu9yXHePYlPdHtpJfrJEUGBMH3SMBWY=
@@ -288,8 +286,8 @@ github.com/siyuan-note/httpclient v0.0.0-20230223101139-409ed0b4c5ff h1:3G48J/tG
 github.com/siyuan-note/httpclient v0.0.0-20230223101139-409ed0b4c5ff/go.mod h1:/fjYEiYPN2ZNR2zVTopobwzo3rOychV2qbsutxiV0jI=
 github.com/siyuan-note/logging v0.0.0-20230223101545-ec2cbf198ffb h1:qzz7ZQw7/tHJd1IST+8UymXFF8RacokMLD7VZgyS+ww=
 github.com/siyuan-note/logging v0.0.0-20230223101545-ec2cbf198ffb/go.mod h1:6mRFtAAvYPn3cDzqvyv+t8BVPGqpONDMMb5ywOhY1D4=
-github.com/siyuan-note/riff v0.0.0-20221228031102-17d458a1217b h1:JDpKOdiyocNsgKFfrF3mB7UoBJz4qcHBUKBig78kVjc=
-github.com/siyuan-note/riff v0.0.0-20221228031102-17d458a1217b/go.mod h1:WnNt0JPjfXp2fjAgbF9rS5W7JC2W0YVcaVmLXIeYF8A=
+github.com/siyuan-note/riff v0.0.0-20230224070227-4514ccc3e496 h1:6u9vlE4EhRja4abccUPGNmG+aMBm/D+5lVomkoYuSmo=
+github.com/siyuan-note/riff v0.0.0-20230224070227-4514ccc3e496/go.mod h1:XJtLlKCr8cZE+lzykM4edHHih92M9M50UNw/nDLYRN8=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d h1:zE9ykElWQ6/NYmHa3jpm/yHnI4xSofP+UP6SpjHcSeM=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
 github.com/smartystreets/goconvey v1.6.7 h1:I6tZjLXD2Q1kjvNbIzB1wvQBsXmKXiVrhpRE8ZjP5jY=
diff --git a/kernel/model/flashcard.go b/kernel/model/flashcard.go
index 6583fa875..a8dcd1344 100644
--- a/kernel/model/flashcard.go
+++ b/kernel/model/flashcard.go
@@ -155,7 +155,7 @@ func GetFlashcards(deckID string, page int) (blocks []*Block, total, pageCount i
 	return
 }
 
-// 每次调用复习时都先缓存一下卡片，以便在复习时支持撤销。
+// reviewCardCache <cardID, card> 用于复习时缓存卡片，以便支持撤销。
 var reviewCardCache = map[string]riff.Card{}
 
 func ReviewFlashcard(deckID string, blockID string, rating riff.Rating) (err error) {
@@ -174,8 +174,14 @@ func ReviewFlashcard(deckID string, blockID string, rating riff.Rating) (err err
 		return
 	}
 
-	// 缓存卡片以便撤销
-	reviewCardCache[card.ID()] = card
+	if cachedCard := reviewCardCache[card.ID()]; nil != cachedCard {
+		// 命中缓存说明这张卡片已经复习过了，这次调用复习是撤销操作
+		// 将缓存的卡片重新覆盖回卡包中，以恢复上次复习前的状态
+		deck.SetCard(cachedCard)
+	} else {
+		// 缓存卡片以便撤销
+		reviewCardCache[card.ID()] = card
+	}
 
 	deck.Review(blockID, rating)
 	err = deck.Save()
@@ -186,7 +192,7 @@ func ReviewFlashcard(deckID string, blockID string, rating riff.Rating) (err err
 
 	dueCards := getDueFlashcards(deckID)
 	if 1 > len(dueCards) {
-		// 这个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
+		// 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
 		reviewCardCache = map[string]riff.Card{}
 	}
 	return