diff --git a/modules/setting/setting.go b/modules/setting/setting.go
index e1e7b7902..509483223 100755
--- a/modules/setting/setting.go
+++ b/modules/setting/setting.go
@@ -490,6 +490,9 @@ var (
 	Index         string
 	TimeField     string
 	ElkTimeFormat string
+
+	//nginx proxy
+	PROXYURL string
 )
 
 // DateLang transforms standard language locale name to corresponding value in datetime plugin.
@@ -1196,6 +1199,7 @@ func NewContext() {
 	Location = sec.Key("LOCATION").MustString("cn-south-222")
 	BasePath = sec.Key("BASE_PATH").MustString("attachment/")
 	UserBasePath = sec.Key("BASE_PATH_USER").MustString("users/")
+	PROXYURL = sec.Key("PROXY_URL").MustString("")
 
 	sec = Cfg.Section("modelarts")
 	ModelArtsHost = sec.Key("ENDPOINT").MustString("112.95.163.80")
@@ -1217,6 +1221,7 @@ func NewContext() {
 	Index = sec.Key("INDEX").MustString("filebeat-7.3.2*")
 	TimeField = sec.Key("TIMEFIELD").MustString(" @timestamptest")
 	ElkTimeFormat = sec.Key("ELKTIMEFORMAT").MustString("date_time")
+
 }
 
 func loadInternalToken(sec *ini.Section) string {
diff --git a/modules/storage/obs.go b/modules/storage/obs.go
index 77fe49b4e..8685c17b6 100755
--- a/modules/storage/obs.go
+++ b/modules/storage/obs.go
@@ -5,11 +5,13 @@
 package storage
 
 import (
-	"github.com/unknwon/com"
+	"io"
 	"path"
 	"strconv"
 	"strings"
 
+	"github.com/unknwon/com"
+
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/obs"
 	"code.gitea.io/gitea/modules/setting"
@@ -102,6 +104,31 @@ func CompleteObsMultiPartUpload(uuid, uploadID, fileName string) error {
 	return nil
 }
 
+func ObsMultiPartUpload(uuid string, uploadId string, partNumber int, fileName string, putBody io.ReadCloser) error {
+	input := &obs.UploadPartInput{}
+	input.Bucket = setting.Bucket
+	input.Key = strings.TrimPrefix(path.Join(setting.BasePath, path.Join(uuid[0:1], uuid[1:2], uuid, fileName)), "/")
+	input.UploadId = uploadId
+	input.PartNumber = partNumber
+	input.Body = putBody
+	output, err := ObsCli.UploadPart(input)
+	if err == nil {
+		log.Info("RequestId:%s\n", output.RequestId)
+		log.Info("ETag:%s\n", output.ETag)
+		return nil
+	} else {
+		if obsError, ok := err.(obs.ObsError); ok {
+			log.Info(obsError.Code)
+			log.Info(obsError.Message)
+			return obsError
+		} else {
+			log.Error("error:", err)
+			return err
+		}
+	}
+
+}
+
 func ObsGenMultiPartSignedUrl(uuid string, uploadId string, partNumber int, fileName string) (string, error) {
 
 	input := &obs.CreateSignedUrlInput{}
diff --git a/routers/repo/attachment.go b/routers/repo/attachment.go
index 8f730dd4c..bd80c070d 100755
--- a/routers/repo/attachment.go
+++ b/routers/repo/attachment.go
@@ -662,6 +662,24 @@ func NewMultipart(ctx *context.Context) {
 	}
 }
 
+func PutOBSProxyUpload(ctx *context.Context) {
+	uuid := ctx.Query("uuid")
+	uploadID := ctx.Query("uploadId")
+	partNumber := ctx.QueryInt("partNumber")
+	fileName := ctx.Query("file_name")
+
+	RequestBody := ctx.Req.Body()
+	if RequestBody == nil {
+		ctx.Error(500, fmt.Sprintf("FormFile: %v", RequestBody))
+		return
+	}
+
+	err := storage.ObsMultiPartUpload(uuid, uploadID, partNumber, fileName, RequestBody.ReadCloser())
+	if err != nil {
+		log.Info("upload error.")
+	}
+}
+
 func GetMultipartUploadUrl(ctx *context.Context) {
 	uuid := ctx.Query("uuid")
 	uploadID := ctx.Query("uploadID")
@@ -689,14 +707,17 @@ func GetMultipartUploadUrl(ctx *context.Context) {
 			return
 		}
 	} else {
-		url, err = storage.ObsGenMultiPartSignedUrl(uuid, uploadID, partNumber, fileName)
-		if err != nil {
-			ctx.Error(500, fmt.Sprintf("ObsGenMultiPartSignedUrl failed: %v", err))
-			return
+		if setting.PROXYURL != "" {
+			url = setting.PROXYURL + "?uuid=" + uuid + "&uploadId=" + uploadID + "&partNumber=" + fmt.Sprint(partNumber) + "&file_name=" + fileName
+			log.Info("return url=" + url)
+		} else {
+			url, err = storage.ObsGenMultiPartSignedUrl(uuid, uploadID, partNumber, fileName)
+			if err != nil {
+				ctx.Error(500, fmt.Sprintf("ObsGenMultiPartSignedUrl failed: %v", err))
+				return
+			}
+			log.Info("url=" + url)
 		}
-
-		log.Info("url=" + url)
-
 	}
 
 	ctx.JSON(200, map[string]string{
diff --git a/routers/routes/routes.go b/routers/routes/routes.go
index 892368315..1991375a6 100755
--- a/routers/routes/routes.go
+++ b/routers/routes/routes.go
@@ -6,13 +6,14 @@ package routes
 
 import (
 	"bytes"
-	"code.gitea.io/gitea/routers/operation"
 	"encoding/gob"
 	"net/http"
 	"path"
 	"text/template"
 	"time"
 
+	"code.gitea.io/gitea/routers/operation"
+
 	"code.gitea.io/gitea/routers/secure"
 
 	"code.gitea.io/gitea/models"
@@ -565,6 +566,7 @@ func RegisterRoutes(m *macaron.Macaron) {
 		m.Post("/private", repo.UpdatePublicAttachment)
 		m.Get("/get_chunks", repo.GetSuccessChunks)
 		m.Get("/new_multipart", repo.NewMultipart)
+		m.Get("/obs_proxy_multipart", repo.PutOBSProxyUpload)
 		m.Get("/get_multipart_url", repo.GetMultipartUploadUrl)
 		m.Post("/complete_multipart", repo.CompleteMultipart)
 		m.Post("/update_chunk", repo.UpdateMultipart)