diff --git a/server/internal/service/storage_target_service.go b/server/internal/service/storage_target_service.go
index 563d9b9..2e9ec4c 100644
--- a/server/internal/service/storage_target_service.go
+++ b/server/internal/service/storage_target_service.go
@@ -21,7 +21,7 @@ import (
 
 type StorageTargetUpsertInput struct {
 	Name        string         `json:"name" binding:"required,min=1,max=128"`
-	Type        string         `json:"type" binding:"required,oneof=local_disk google_drive s3 webdav"`
+	Type        string         `json:"type" binding:"required,oneof=local_disk google_drive s3 webdav aliyun_oss tencent_cos qiniu_kodo ftp rclone"`
 	Description string         `json:"description" binding:"max=255"`
 	Enabled     bool           `json:"enabled"`
 	Config      map[string]any `json:"config" binding:"required"`
diff --git a/server/internal/storage/rclone/provider.go b/server/internal/storage/rclone/provider.go
index 2126ee2..92b8256 100644
--- a/server/internal/storage/rclone/provider.go
+++ b/server/internal/storage/rclone/provider.go
@@ -26,8 +26,12 @@ func newProvider(providerType storage.ProviderType, rfs fs.Fs) *Provider {
 
 func (p *Provider) Type() storage.ProviderType { return p.providerType }
 
-// TestConnection 通过列出根目录验证连通性。
+// TestConnection 验证连通性。对本地磁盘会先确保目录存在。
 func (p *Provider) TestConnection(ctx context.Context) error {
+	// 确保根目录存在（本地磁盘等后端需要预创建）
+	if err := p.rfs.Mkdir(ctx, ""); err != nil {
+		return fmt.Errorf("rclone test connection (mkdir): %w", err)
+	}
 	_, err := p.rfs.List(ctx, "")
 	if err != nil {
 		return fmt.Errorf("rclone test connection: %w", err)
diff --git a/web/src/components/storage-targets/field-config.ts b/web/src/components/storage-targets/field-config.ts
index e95713f..54c0e72 100644
--- a/web/src/components/storage-targets/field-config.ts
+++ b/web/src/components/storage-targets/field-config.ts
@@ -301,5 +301,5 @@ export const storageTargetTypeOptions = [
   { label: 'Google Drive', value: 'google_drive' },
   { label: 'WebDAV', value: 'webdav' },
   { label: 'FTP', value: 'ftp' },
-  { label: 'Rclone (70+ 后端)', value: 'rclone' },
+  { label: 'Rclone — SFTP / Azure / Dropbox / OneDrive 等 70+ 后端', value: 'rclone' },
 ] as const