diff --git a/drivers/alidrive.go b/drivers/alidrive.go
index 559a0da7..7b0d664b 100644
--- a/drivers/alidrive.go
+++ b/drivers/alidrive.go
@@ -26,6 +26,45 @@ func init() {
 
 type AliDrive struct{}
 
+func (a AliDrive) Preview(path string, account *model.Account) (interface{}, error) {
+	file, err := a.GetFile(path, account)
+	if err != nil {
+		return nil, err
+	}
+	// office
+	var resp Json
+	var e AliRespError
+	var url string
+	req := Json{
+		"drive_id": account.DriveId,
+		"file_id": file.FileId,
+	}
+	switch file.Category {
+	case "doc":
+		{
+			url = "https://api.aliyundrive.com/v2/file/get_office_preview_url"
+			req["access_token"] = account.AccessToken
+		}
+	case "video":
+		{
+			url = "https://api.aliyundrive.com/v2/file/get_video_preview_play_info"
+			req["category"] = "live_transcoding"
+		}
+	default:
+		return nil, fmt.Errorf("don't support")
+	}
+	_, err = aliClient.R().SetResult(&resp).SetError(&e).
+		SetHeader("authorization", "Bearer\t"+account.AccessToken).
+		SetBody(req).Post(url)
+	if err != nil {
+		return nil, err
+	}
+	if e.Code != "" {
+		return nil, fmt.Errorf("%s",e.Message)
+	}
+	return resp, nil
+}
+
 func (a AliDrive) Items() []Item {
 	return []Item{
 		{
@@ -133,6 +172,27 @@ func (a AliDrive) GetFiles(fileId string, account *model.Account) ([]AliFile, er
 	return res, nil
 }
 
+func (a AliDrive) GetFile(path string, account *model.Account) (*AliFile, error) {
+	dir, name := filepath.Split(path)
+	dir = utils.ParsePath(dir)
+	_, _, err := a.Path(dir, account)
+	if err != nil {
+		return nil, err
+	}
+	parentFiles_, _ := conf.Cache.Get(conf.Ctx, fmt.Sprintf("%s%s", account.Name, dir))
+	parentFiles, _ := parentFiles_.([]AliFile)
+	for _, file := range parentFiles {
+		if file.Name == name {
+			if file.Type == "file" {
+				return &file, err
+			} else {
+				return nil, fmt.Errorf("not file")
+			}
+		}
+	}
+	return nil, fmt.Errorf("path not found")
+}
+
 // path: /aaa/bbb
 func (a AliDrive) Path(path string, account *model.Account) (*model.File, []*model.File, error) {
 	path = utils.ParsePath(path)
@@ -191,40 +251,27 @@ func (a AliDrive) Path(path string, account *model.Account) (*model.File, []*mod
 }
 
 func (a AliDrive) Link(path string, account *model.Account) (string, error) {
-	dir, name := filepath.Split(path)
-	dir = utils.ParsePath(dir)
-	_, _, err := a.Path(dir, account)
+	file, err := a.GetFile(path, account)
 	if err != nil {
 		return "", err
 	}
-	parentFiles_, _ := conf.Cache.Get(conf.Ctx, fmt.Sprintf("%s%s", account.Name, dir))
-	parentFiles, _ := parentFiles_.([]AliFile)
-	for _, file := range parentFiles {
-		if file.Name == name {
-			if file.Type == "file" {
-				var resp Json
-				var e AliRespError
-				_, err = aliClient.R().SetResult(&resp).
-					SetError(&e).
-					SetHeader("authorization", "Bearer\t"+account.AccessToken).
-					SetBody(Json{
-						"drive_id":   account.DriveId,
-						"file_id":    file.FileId,
-						"expire_sec": 14400,
-					}).Post("https://api.aliyundrive.com/v2/file/get_download_url")
-				if err != nil {
-					return "", err
-				}
-				if e.Code != "" {
-					return "", fmt.Errorf("%s", e.Message)
-				}
-				return resp["url"].(string), nil
-			} else {
-				return "", fmt.Errorf("can't down folder")
-			}
-		}
+	var resp Json
+	var e AliRespError
+	_, err = aliClient.R().SetResult(&resp).
+		SetError(&e).
+		SetHeader("authorization", "Bearer\t"+account.AccessToken).
+		SetBody(Json{
+			"drive_id":   account.DriveId,
+			"file_id":    file.FileId,
+			"expire_sec": 14400,
+		}).Post("https://api.aliyundrive.com/v2/file/get_download_url")
+	if err != nil {
+		return "", err
 	}
-	return "", fmt.Errorf("path not found")
+	if e.Code != "" {
+		return "", fmt.Errorf("%s", e.Message)
+	}
+	return resp["url"].(string), nil
 }
 
 type AliTokenResp struct {
diff --git a/drivers/driver.go b/drivers/driver.go
index 787f277b..67b6e21e 100644
--- a/drivers/driver.go
+++ b/drivers/driver.go
@@ -12,6 +12,7 @@ type Driver interface {
 	Link(path string, account *model.Account) (string, error)
 	Save(account *model.Account, old *model.Account) error
 	Proxy(ctx *fiber.Ctx)
+	Preview(path string, account *model.Account) (interface{},error)
 	// TODO
 	//MakeDir(path string, account *model.Account) error
 	//Move(src string, des string, account *model.Account) error
diff --git a/drivers/native.go b/drivers/native.go
index cb7ecf7d..69e1277f 100644
--- a/drivers/native.go
+++ b/drivers/native.go
@@ -16,6 +16,10 @@ import (
 type Native struct {
 }
 
+func (n Native) Preview(path string, account *model.Account) (interface{}, error) {
+	return nil,fmt.Errorf("no need")
+}
+
 func (n Native) Items() []Item {
 	return []Item{
 		{
diff --git a/server/down.go b/server/down.go
index 020a065a..76825c1e 100644
--- a/server/down.go
+++ b/server/down.go
@@ -2,11 +2,13 @@ package server
 
 import (
 	"fmt"
+	"github.com/Xhofe/alist/conf"
 	"github.com/Xhofe/alist/utils"
 	"github.com/gofiber/fiber/v2"
 	"github.com/gofiber/fiber/v2/middleware/proxy"
 	log "github.com/sirupsen/logrus"
 	"net/url"
+	"path/filepath"
 )
 
 func Down(ctx *fiber.Ctx) error {
@@ -37,12 +39,12 @@ func Proxy(ctx *fiber.Ctx) error {
 		return ErrorResp(ctx,err,500)
 	}
 	rawPath = utils.ParsePath(rawPath)
-	log.Debugf("down: %s",rawPath)
+	log.Debugf("proxy: %s",rawPath)
 	account, path, driver, err := ParsePath(rawPath)
 	if err != nil {
 		return ErrorResp(ctx, err, 500)
 	}
-	if !account.Proxy {
+	if !account.Proxy && utils.GetFileType(filepath.Ext(rawPath))!=conf.TEXT {
 		return ErrorResp(ctx,fmt.Errorf("[%s] not allowed proxy",account.Name),403)
 	}
 	link, err := driver.Link(path, account)
@@ -54,10 +56,13 @@ func Proxy(ctx *fiber.Ctx) error {
 	} else {
 		driver.Proxy(ctx)
 		if err := proxy.Do(ctx, link); err != nil {
+			log.Errorf("proxy error: %s", err)
 			return ErrorResp(ctx,err,500)
 		}
 		// Remove Server header from response
 		ctx.Response().Header.Del(fiber.HeaderServer)
+		ctx.Set("Access-Control-Allow-Origin","*")
+		log.Debugf("proxy hedaer: %+v", ctx.Response().Header.String())
 		return nil
 	}
 }
\ No newline at end of file
diff --git a/server/path.go b/server/path.go
index ac60afa1..018094fc 100644
--- a/server/path.go
+++ b/server/path.go
@@ -64,7 +64,7 @@ func Link(ctx *fiber.Ctx) error {
 	}
 	rawPath := req.Path
 	rawPath = utils.ParsePath(rawPath)
-	log.Debugf("down: %s",rawPath)
+	log.Debugf("link: %s",rawPath)
 	account, path, driver, err := ParsePath(rawPath)
 	if err != nil {
 		return ErrorResp(ctx, err, 500)
@@ -82,4 +82,24 @@ func Link(ctx *fiber.Ctx) error {
 			"url":link,
 		})
 	}
+}
+
+func Preview(ctx *fiber.Ctx) error {
+	var req PathReq
+	if err := ctx.BodyParser(&req); err != nil {
+		return ErrorResp(ctx, err, 400)
+	}
+	rawPath := req.Path
+	rawPath = utils.ParsePath(rawPath)
+	log.Debugf("preview: %s",rawPath)
+	account, path, driver, err := ParsePath(rawPath)
+	if err != nil {
+		return ErrorResp(ctx, err, 500)
+	}
+	data, err := driver.Preview(path, account)
+	if err != nil {
+		return ErrorResp(ctx,err,500)
+	}else {
+		return SuccessResp(ctx,data)
+	}
 }
\ No newline at end of file
diff --git a/server/router.go b/server/router.go
index 2a8dff33..9ed7a5c8 100644
--- a/server/router.go
+++ b/server/router.go
@@ -18,6 +18,7 @@ func InitApiRouter(app *fiber.App) {
 	public := api.Group("/public")
 	{
 		public.Post("/path", CheckAccount, Path)
+		public.Post("/preview", CheckAccount, Preview)
 		public.Get("/settings", GetSettingsPublic)
 		public.Post("/link", CheckAccount, Link)
 	}