diff --git a/miniprogram/content/content.go b/miniprogram/content/content.go
index d53f2db..f3f1b78 100644
--- a/miniprogram/content/content.go
+++ b/miniprogram/content/content.go
@@ -53,9 +53,12 @@ func (content *Content) CheckImage(media string) error {
 	if err != nil {
 		return err
 	}
+	var directory = media
 	response, err := util.PostFile(
 		"media",
-		media,
+		nil,
+		"",
+		directory,
 		fmt.Sprintf(checkImageURL, accessToken),
 	)
 	if err != nil {
diff --git a/miniprogram/security/security.go b/miniprogram/security/security.go
index 3e979a5..011ea99 100644
--- a/miniprogram/security/security.go
+++ b/miniprogram/security/security.go
@@ -102,7 +102,8 @@ func (security *Security) ImageCheckV1(filename string) (err error) {
 	}
 
 	uri := fmt.Sprintf(imageCheckURL, accessToken)
-	response, err := util.PostFile("media", filename, uri)
+	var directory = filename
+	response, err := util.PostFile("media", nil, "", directory, uri)
 	if err != nil {
 		return
 	}
diff --git a/officialaccount/customerservice/manager.go b/officialaccount/customerservice/manager.go
index 973a86c..dc92f4b 100644
--- a/officialaccount/customerservice/manager.go
+++ b/officialaccount/customerservice/manager.go
@@ -212,7 +212,8 @@ func (csm *Manager) UploadHeadImg(kfAccount, fileName string) (err error) {
 	}
 	uri := fmt.Sprintf("%s?access_token=%s&kf_account=%s", customerServiceUploadHeadImg, accessToken, kfAccount)
 	var response []byte
-	response, err = util.PostFile("media", fileName, uri)
+	var directory = fileName
+	response, err = util.PostFile("media", nil, "", directory, uri)
 	if err != nil {
 		return
 	}
diff --git a/officialaccount/material/material.go b/officialaccount/material/material.go
index d8a43b9..bafd9bb 100644
--- a/officialaccount/material/material.go
+++ b/officialaccount/material/material.go
@@ -163,7 +163,7 @@ type resAddMaterial struct {
 }
 
 // AddMaterialFromReader 上传永久性素材（处理视频需要单独上传），从 io.Reader 中读取
-func (material *Material) AddMaterialFromReader(mediaType MediaType, filename string, reader io.Reader) (mediaID string, url string, err error) {
+func (material *Material) AddMaterialFromReader(mediaType MediaType, filename string) (mediaID string, url string, err error) {
 	if mediaType == MediaTypeVideo {
 		err = errors.New("永久视频素材上传使用 AddVideo 方法")
 		return
diff --git a/officialaccount/material/media.go b/officialaccount/material/media.go
index 316758f..1d560e0 100644
--- a/officialaccount/material/media.go
+++ b/officialaccount/material/media.go
@@ -3,6 +3,9 @@ package material
 import (
 	"encoding/json"
 	"fmt"
+	"io"
+	"net/http"
+	"strings"
 
 	"github.com/silenceper/wechat/v2/util"
 )
@@ -38,16 +41,32 @@ type Media struct {
 }
 
 // MediaUpload 临时素材上传
-func (material *Material) MediaUpload(mediaType MediaType, filename string) (media Media, err error) {
+func (material *Material) MediaUpload(mediaType MediaType, url string) (media Media, err error) {
 	var accessToken string
-	accessToken, err = material.GetAccessToken()
-	if err != nil {
+	if accessToken, err = material.GetAccessToken(); err != nil {
 		return
 	}
-
 	uri := fmt.Sprintf("%s?access_token=%s&type=%s", mediaUploadURL, accessToken, mediaType)
+	// 使用strings.LastIndex函数找到最后一个斜杠的位置
+	lastSlashIndex := strings.LastIndex(url, "/")
+	// 从最后一个斜杠的位置截取到最后，获取文件名
+	filename := url[lastSlashIndex+1:]
+	// 获取资源
+	resp, err := http.Get(url)
+	if err != nil {
+		err = fmt.Errorf("get image error: %v", err)
+		return
+	}
+	// 读取响应到内存
+	var imageData []byte
+	imageData, err = io.ReadAll(resp.Body)
+	defer resp.Body.Close()
+	if err != nil {
+		err = fmt.Errorf("read image error: %v", err)
+		return
+	}
 	var response []byte
-	response, err = util.PostFile("media", filename, uri)
+	response, err = util.PostFile("media", imageData, filename, "", uri)
 	if err != nil {
 		return
 	}
@@ -56,7 +75,7 @@ func (material *Material) MediaUpload(mediaType MediaType, filename string) (med
 		return
 	}
 	if media.ErrCode != 0 {
-		err = fmt.Errorf("MediaUpload error : errcode=%v , errmsg=%v", media.ErrCode, media.ErrMsg)
+		err = fmt.Errorf("MediaUpload error : errcode=%v, errmsg=%v", media.ErrCode, media.ErrMsg)
 		return
 	}
 	return
@@ -91,7 +110,8 @@ func (material *Material) ImageUpload(filename string) (url string, err error) {
 
 	uri := fmt.Sprintf("%s?access_token=%s", mediaUploadImageURL, accessToken)
 	var response []byte
-	response, err = util.PostFile("media", filename, uri)
+	var directory = filename
+	response, err = util.PostFile("media", nil, "", directory, uri)
 	if err != nil {
 		return
 	}
diff --git a/util/http.go b/util/http.go
index b9b4b00..b5d4d9c 100644
--- a/util/http.go
+++ b/util/http.go
@@ -146,26 +146,23 @@ func PostJSONWithRespContentType(uri string, obj interface{}) ([]byte, string, e
 	return responseData, contentType, err
 }
 
-// PostFile 上传文件
-func PostFile(fieldName, filename, uri string) ([]byte, error) {
-	fields := []MultipartFormField{
-		{
-			IsFile:    true,
-			Fieldname: fieldName,
-			Filename:  filename,
-		},
+// PostFile 支持流或文件形式上传
+func PostFile(fieldName string, data []byte, fileName string, directory string, uri string) ([]byte, error) {
+	var fileContent []byte
+	var isFile bool
+	// 数据为空且文件目录不为空则按文件形式上传
+	if len(data) == 0 && directory != "" {
+		isFile = true
+	} else {
+		fileContent = data
 	}
-	return PostMultipartForm(fields, uri)
-}
-
-// PostFileFromReader 上传文件，从 io.Reader 中读取
-func PostFileFromReader(filedName, fileName, uri string, reader io.Reader) ([]byte, error) {
 	fields := []MultipartFormField{
 		{
-			IsFile:     true,
-			Fieldname:  filedName,
-			Filename:   fileName,
-			FileReader: reader,
+			IsFile:    isFile,
+			Fieldname: fieldName,
+			Value:     fileContent,
+			Filename:  fileName,
+			Directory: directory,
 		},
 	}
 	return PostMultipartForm(fields, uri)
@@ -173,11 +170,11 @@ func PostFileFromReader(filedName, fileName, uri string, reader io.Reader) ([]by
 
 // MultipartFormField 保存文件或其他字段信息
 type MultipartFormField struct {
-	IsFile     bool
-	Fieldname  string
-	Value      []byte
-	Filename   string
-	FileReader io.Reader
+	IsFile    bool
+	Fieldname string
+	Value     []byte
+	Filename  string
+	Directory string
 }
 
 // PostMultipartForm 上传文件或其他多个字段
@@ -190,30 +187,24 @@ func PostMultipartForm(fields []MultipartFormField, uri string) (respBody []byte
 
 	for _, field := range fields {
 		if field.IsFile {
-			fileWriter, e := bodyWriter.CreateFormFile(field.Fieldname, field.Filename)
+			fileWriter, e := bodyWriter.CreateFormFile(field.Fieldname, field.Directory)
 			if e != nil {
 				err = fmt.Errorf("error writing to buffer , err=%v", e)
 				return
 			}
 
-			if field.FileReader == nil {
-				fh, e := os.Open(field.Filename)
-				if e != nil {
-					err = fmt.Errorf("error opening file , err=%v", e)
-					return
-				}
-				_, err = io.Copy(fileWriter, fh)
-				_ = fh.Close()
-				if err != nil {
-					return
-				}
-			} else {
-				if _, err = io.Copy(fileWriter, field.FileReader); err != nil {
-					return
-				}
+			fh, e := os.Open(field.Directory)
+			if e != nil {
+				err = fmt.Errorf("error opening file , err=%v", e)
+				return
+			}
+			defer fh.Close()
+
+			if _, err = io.Copy(fileWriter, fh); err != nil {
+				return
 			}
 		} else {
-			partWriter, e := bodyWriter.CreateFormField(field.Fieldname)
+			partWriter, e := bodyWriter.CreateFormFile(field.Fieldname, field.Filename)
 			if e != nil {
 				err = e
 				return
@@ -235,7 +226,7 @@ func PostMultipartForm(fields []MultipartFormField, uri string) (respBody []byte
 	}
 	defer resp.Body.Close()
 	if resp.StatusCode != http.StatusOK {
-		return nil, fmt.Errorf("http code error : uri=%v , statusCode=%v", uri, resp.StatusCode)
+		return nil, err
 	}
 	respBody, err = io.ReadAll(resp.Body)
 	return
diff --git a/work/material/media.go b/work/material/media.go
index b32785a..0d812ac 100644
--- a/work/material/media.go
+++ b/work/material/media.go
@@ -48,7 +48,8 @@ func (r *Client) UploadImg(filename string) (*UploadImgResponse, error) {
 		return nil, err
 	}
 	var response []byte
-	if response, err = util.PostFile("media", filename, fmt.Sprintf(uploadImgURL, accessToken)); err != nil {
+	var directory = filename
+	if response, err = util.PostFile("media", nil, "", directory, fmt.Sprintf(uploadImgURL, accessToken)); err != nil {
 		return nil, err
 	}
 	result := &UploadImgResponse{}
@@ -68,7 +69,8 @@ func (r *Client) UploadTempFile(filename string, mediaType string) (*UploadTempF
 		return nil, err
 	}
 	var response []byte
-	if response, err = util.PostFile("media", filename, fmt.Sprintf(uploadTempFile, accessToken, mediaType)); err != nil {
+	var directory = filename
+	if response, err = util.PostFile("media", nil, "", directory, fmt.Sprintf(uploadTempFile, accessToken, mediaType)); err != nil {
 		return nil, err
 	}
 	result := &UploadTempFileResponse{}
@@ -89,7 +91,8 @@ func (r *Client) UploadAttachment(filename string, mediaType string, attachmentT
 		return nil, err
 	}
 	var response []byte
-	if response, err = util.PostFile("media", filename, fmt.Sprintf(uploadAttachment, accessToken, mediaType, attachmentType)); err != nil {
+	var directory = filename
+	if response, err = util.PostFile("media", nil, "", directory, fmt.Sprintf(uploadTempFile, accessToken, mediaType)); err != nil {
 		return nil, err
 	}
 	result := &UploadAttachmentResponse{}