diff --git a/kernel/model/repository.go b/kernel/model/repository.go
index af0134a56..9ffa336ec 100644
--- a/kernel/model/repository.go
+++ b/kernel/model/repository.go
@@ -145,7 +145,6 @@ func InitRepoKeyFromPassphrase(passphrase string) (err error) {
 	}
 
 	util.PushMsg(Conf.Language(136), 3000)
-
 	if err = os.RemoveAll(Conf.Repo.GetSaveDir()); nil != err {
 		return
 	}
@@ -153,12 +152,21 @@ func InitRepoKeyFromPassphrase(passphrase string) (err error) {
 		return
 	}
 
-	salt := fmt.Sprintf("%x", sha256.Sum256([]byte(passphrase)))[:16]
-	key, err := encryption.KDF(passphrase, salt)
-	if nil != err {
-		logging.LogErrorf("init data repo key failed: %s", err)
-		return
+	var key []byte
+	base64Data, base64Err := base64.StdEncoding.DecodeString(passphrase)
+	if nil == base64Err {
+		// 改进数据仓库 `通过密码生成密钥` https://github.com/siyuan-note/siyuan/issues/6782
+		logging.LogInfof("passphrase is base64 encoded, use it as key directly")
+		key = base64Data
+	} else {
+		salt := fmt.Sprintf("%x", sha256.Sum256([]byte(passphrase)))[:16]
+		key, err = encryption.KDF(passphrase, salt)
+		if nil != err {
+			logging.LogErrorf("init data repo key failed: %s", err)
+			return
+		}
 	}
+
 	Conf.Repo.Key = key
 	Conf.Save()