diff --git a/kernel/model/sync.go b/kernel/model/sync.go
index ba3f4e4c7..de3039706 100644
--- a/kernel/model/sync.go
+++ b/kernel/model/sync.go
@@ -595,13 +595,13 @@ func workspaceData2SyncDir() (err error) {
 	filesys.ReleaseAllFileLocks()
 
 	passwd := Conf.E2EEPasswd
-	unchanged, removed, err := unchangedDataList(passwd)
+	unchangedDataList, removedSyncList, err := calcUnchangedDataList(passwd)
 	if nil != err {
 		return
 	}
-	_ = removed // TODO: 支持多设备操作不同文档后云端同步合并 https://github.com/siyuan-note/siyuan/issues/5092
+	_ = removedSyncList // TODO: 支持多设备操作不同文档后云端同步合并 https://github.com/siyuan-note/siyuan/issues/5092
 
-	encryptedDataDir, err := prepareSyncData(passwd, unchanged)
+	encryptedDataDir, err := prepareSyncData(passwd, unchangedDataList)
 	if nil != err {
 		util.LogErrorf("encrypt data dir failed: %s", err)
 		return
@@ -993,8 +993,8 @@ func unchangedSyncList() (ret map[string]bool, removes []string, err error) {
 	return
 }
 
-// unchangedDataList 获取 sync 和 data 一致（没有修改过）的文件列表，并删除 sync 中不存在于 data 中的多余文件。
-func unchangedDataList(passwd string) (unchangedList map[string]bool, removeList map[string]bool, err error) {
+// calcUnchangedDataList 计算 sync 和 data 一致（没有修改过）的文件列表 unchangedDataList，并删除 sync 中不存在于 data 中的多余文件 removedSyncList。
+func calcUnchangedDataList(passwd string) (unchangedDataList map[string]bool, removedSyncList map[string]bool, err error) {
 	syncDir := Conf.Sync.GetSaveDir()
 	meta := filepath.Join(syncDir, pathJSON)
 	if !gulu.File.IsExist(meta) {
@@ -1015,8 +1015,8 @@ func unchangedDataList(passwd string) (unchangedList map[string]bool, removeList
 		return
 	}
 
-	unchangedList = map[string]bool{}
-	removeList = map[string]bool{}
+	unchangedDataList = map[string]bool{}
+	removedSyncList = map[string]bool{}
 	filepath.Walk(syncDir, func(path string, info fs.FileInfo, _ error) error {
 		if syncDir == path || pathJSON == info.Name() {
 			return nil
@@ -1026,7 +1026,7 @@ func unchangedDataList(passwd string) (unchangedList map[string]bool, removeList
 		encryptedP = filepath.ToSlash(encryptedP)
 		decryptedP := metaJSON[encryptedP]
 		if "" == decryptedP { // 理论上不会发生
-			removeList[path] = true
+			removedSyncList[path] = true
 			if gulu.File.IsDir(path) {
 				return filepath.SkipDir
 			}
@@ -1035,7 +1035,7 @@ func unchangedDataList(passwd string) (unchangedList map[string]bool, removeList
 		dataP := filepath.Join(util.DataDir, decryptedP)
 		dataP = filepath.FromSlash(dataP)
 		if !gulu.File.IsExist(dataP) { // data 已经删除的文件
-			removeList[path] = true
+			removedSyncList[path] = true
 			if gulu.File.IsDir(path) {
 				return filepath.SkipDir
 			}
@@ -1045,14 +1045,14 @@ func unchangedDataList(passwd string) (unchangedList map[string]bool, removeList
 		stat, _ := os.Stat(dataP)
 		dataModTime := stat.ModTime()
 		if info.ModTime() == dataModTime {
-			unchangedList[dataP] = true
+			unchangedDataList[dataP] = true
 			return nil
 		}
 		return nil
 	})
 
 	// 在 sync 中删除 data 中已经删除的文件
-	for remove, _ := range removeList {
+	for remove, _ := range removedSyncList {
 		if strings.HasSuffix(remove, "index.json") {
 			continue
 		}