diff --git a/backend/app/service/backup.go b/backend/app/service/backup.go
index 6fde31166..f355430e1 100644
--- a/backend/app/service/backup.go
+++ b/backend/app/service/backup.go
@@ -414,8 +414,6 @@ func (u *BackupService) NewClient(backup *model.BackupAccount) (cloud_storage.Cl
 	case constant.OSS, constant.S3, constant.MinIo, constant.Cos, constant.Kodo:
 		varMap["accessKey"] = backup.AccessKey
 		varMap["secretKey"] = backup.Credential
-	case constant.OneDrive:
-		varMap["accessToken"] = backup.Credential
 	}
 
 	backClient, err := cloud_storage.NewCloudStorageClient(backup.Type, varMap)
@@ -453,12 +451,11 @@ func (u *BackupService) loadAccessToken(backup *model.BackupAccount) error {
 	if err := json.Unmarshal([]byte(backup.Vars), &varMap); err != nil {
 		return fmt.Errorf("unmarshal backup vars failed, err: %v", err)
 	}
-	token, refreshToken, err := client.RefreshToken("authorization_code", varMap)
+	refreshToken, err := client.RefreshToken("authorization_code", "refreshToken", varMap)
 	if err != nil {
 		return err
 	}
 	delete(varMap, "code")
-	backup.Credential = token
 	varMap["refresh_status"] = constant.StatusSuccess
 	varMap["refresh_time"] = time.Now().Format(constant.DateTimeLayout)
 	varMap["refresh_token"] = refreshToken
@@ -599,7 +596,7 @@ func (u *BackupService) checkBackupConn(backup *model.BackupAccount) (bool, erro
 
 func StartRefreshOneDriveToken() {
 	service := NewIBackupService()
-	oneDriveCronID, err := global.Cron.AddJob("0 * * * *", service)
+	oneDriveCronID, err := global.Cron.AddJob("0 3 */31 * *", service)
 	if err != nil {
 		global.LOG.Errorf("can not add OneDrive corn job: %s", err.Error())
 		return
@@ -613,17 +610,13 @@ func (u *BackupService) Run() {
 	if backupItem.ID == 0 {
 		return
 	}
-	if len(backupItem.Credential) == 0 {
-		global.LOG.Error("OneDrive configuration lacks token information, please rebind.")
-		return
-	}
 	global.LOG.Info("start to refresh token of OneDrive ...")
 	varMap := make(map[string]interface{})
 	if err := json.Unmarshal([]byte(backupItem.Vars), &varMap); err != nil {
 		global.LOG.Errorf("Failed to refresh OneDrive token, please retry, err: %v", err)
 		return
 	}
-	token, refreshToken, err := client.RefreshToken("refresh_token", varMap)
+	refreshToken, err := client.RefreshToken("refresh_token", "refreshToken", varMap)
 	varMap["refresh_status"] = constant.StatusSuccess
 	varMap["refresh_time"] = time.Now().Format(constant.DateTimeLayout)
 	if err != nil {
@@ -638,8 +631,7 @@ func (u *BackupService) Run() {
 	_ = global.DB.Model(&model.BackupAccount{}).
 		Where("id = ?", backupItem.ID).
 		Updates(map[string]interface{}{
-			"credential": token,
-			"vars":       varsItem,
+			"vars": varsItem,
 		}).Error
 	global.LOG.Info("Successfully refreshed OneDrive token.")
 }
diff --git a/backend/init/migration/migrations/v_1_9.go b/backend/init/migration/migrations/v_1_9.go
index 4d9118a17..fcf5ca71b 100644
--- a/backend/init/migration/migrations/v_1_9.go
+++ b/backend/init/migration/migrations/v_1_9.go
@@ -249,7 +249,7 @@ var UpdateOneDriveToken = &gormigrate.Migration{
 		varMap["client_secret"] = global.CONF.System.OneDriveSc
 		varMap["redirect_uri"] = constant.OneDriveRedirectURI
 		varMap["refresh_token"] = backup.Credential
-		token, refreshToken, err := client.RefreshToken("refresh_token", varMap)
+		refreshToken, err := client.RefreshToken("refresh_token", "refreshToken", varMap)
 		varMap["refresh_status"] = constant.StatusSuccess
 		varMap["refresh_time"] = time.Now().Format(constant.DateTimeLayout)
 		if err != nil {
@@ -261,8 +261,7 @@ var UpdateOneDriveToken = &gormigrate.Migration{
 		if err := tx.Model(&model.BackupAccount{}).
 			Where("id = ?", backup.ID).
 			Updates(map[string]interface{}{
-				"credential": token,
-				"vars":       string(itemVars),
+				"vars": string(itemVars),
 			}).Error; err != nil {
 			return err
 		}
diff --git a/backend/utils/cloud_storage/client/onedrive.go b/backend/utils/cloud_storage/client/onedrive.go
index 65740ab86..7ad0177d7 100644
--- a/backend/utils/cloud_storage/client/onedrive.go
+++ b/backend/utils/cloud_storage/client/onedrive.go
@@ -27,7 +27,10 @@ type oneDriveClient struct {
 }
 
 func NewOneDriveClient(vars map[string]interface{}) (*oneDriveClient, error) {
-	token := loadParamFromVars("accessToken", vars)
+	token, err := RefreshToken("refresh_token", "accessToken", vars)
+	if err != nil {
+		return nil, err
+	}
 	isCN := loadParamFromVars("isCN", vars)
 	ctx := context.Background()
 	ts := oauth2.StaticTokenSource(
@@ -196,7 +199,7 @@ func (o *oneDriveClient) loadIDByPath(path string) (string, error) {
 	return driveItem.Id, nil
 }
 
-func RefreshToken(grantType string, varMap map[string]interface{}) (string, string, error) {
+func RefreshToken(grantType string, tokenType string, varMap map[string]interface{}) (string, error) {
 	data := url.Values{}
 	isCN := loadParamFromVars("isCN", varMap)
 	data.Set("client_id", loadParamFromVars("client_id", varMap))
@@ -216,32 +219,37 @@ func RefreshToken(grantType string, varMap map[string]interface{}) (string, stri
 	}
 	req, err := http.NewRequest("POST", url, strings.NewReader(data.Encode()))
 	if err != nil {
-		return "", "", fmt.Errorf("new http post client for access token failed, err: %v", err)
+		return "", fmt.Errorf("new http post client for access token failed, err: %v", err)
 	}
 	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
 	resp, err := client.Do(req)
 	if err != nil {
-		return "", "", fmt.Errorf("request for access token failed, err: %v", err)
+		return "", fmt.Errorf("request for access token failed, err: %v", err)
 	}
 	defer resp.Body.Close()
 	respBody, err := io.ReadAll(resp.Body)
 	if err != nil {
-		return "", "", fmt.Errorf("read data from response body failed, err: %v", err)
+		return "", fmt.Errorf("read data from response body failed, err: %v", err)
 	}
 
 	tokenMap := map[string]interface{}{}
 	if err := json.Unmarshal(respBody, &tokenMap); err != nil {
-		return "", "", fmt.Errorf("unmarshal data from response body failed, err: %v", err)
+		return "", fmt.Errorf("unmarshal data from response body failed, err: %v", err)
 	}
-	accessToken, ok := tokenMap["access_token"].(string)
-	if !ok {
-		return "", "", errors.New("no such access token in response")
+	if tokenType == "accessToken" {
+		accessToken, ok := tokenMap["access_token"].(string)
+		if !ok {
+			return "", errors.New("no such access token in response")
+		}
+		tokenMap = nil
+		return accessToken, nil
 	}
 	refreshToken, ok := tokenMap["refresh_token"].(string)
 	if !ok {
-		return "", "", errors.New("no such access token in response")
+		return "", errors.New("no such access token in response")
 	}
-	return accessToken, refreshToken, nil
+	tokenMap = nil
+	return refreshToken, nil
 }
 
 func (o *oneDriveClient) createFolder(parent string) error {
@@ -356,8 +364,8 @@ func (o *oneDriveClient) upBig(ctx context.Context, srcPath, folderID string, fi
 
 	fileSessionUploadUrl := sessionCreationResp.UploadURL
 
-	sizePerSplit := int64(3200 * 1024)
-	buffer := make([]byte, 3200*1024)
+	sizePerSplit := int64(5 * 1024 * 1024)
+	buffer := make([]byte, 5*1024*1024)
 	splitCount := fileSize / sizePerSplit
 	if fileSize%sizePerSplit != 0 {
 		splitCount += 1
diff --git a/frontend/src/lang/modules/zh.ts b/frontend/src/lang/modules/zh.ts
index 3541c348a..9a545ac35 100644
--- a/frontend/src/lang/modules/zh.ts
+++ b/frontend/src/lang/modules/zh.ts
@@ -1016,7 +1016,7 @@ const message = {
             clamHelper:
                 'ClamAV 的最低建议配置为：3 GiB 以上的 RAM，2.0 GHz 以上的单核 CPU，以及至少 5 GiB 的可用硬盘空间。',
             noClam: '未检测到 ClamAV 服务，请参考官方文档进行安装！',
-            notStart: '当前未 ClamAV 服务，请先开启！',
+            notStart: '当前未开启 ClamAV 服务，请先开启！',
             removeResult: '删除报告文件',
             removeResultHelper: '删除任务执行过程中生成的报告文件，以清理存储空间。',
             removeInfected: '删除病毒文件',