diff --git a/CHANGELOG.md b/CHANGELOG.md
index ad9b680..437a6a5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## v1.14.1
+
+- feat(api): UploadFile support uploads binary file
+
 ## v1.14.0
 
 - refactor(im): build reply and update message with standalone methods
diff --git a/api_upload.go b/api_upload.go
index b7c018d..01246fd 100644
--- a/api_upload.go
+++ b/api_upload.go
@@ -29,10 +29,11 @@ type UploadImageResponse struct {
 
 // UploadFileRequest .
 type UploadFileRequest struct {
-	FileType string `json:"-"`
-	FileName string `json:"-"`
-	Duration int    `json:"-"`
-	Path     string `json:"-"`
+	FileType string    `json:"-"`
+	FileName string    `json:"-"`
+	Duration int       `json:"-"`
+	Path     string    `json:"-"`
+	Reader   io.Reader `json:"-"`
 }
 
 // UploadFileResponse .
@@ -105,11 +106,18 @@ func (bot Bot) UploadImageObject(img image.Image) (*UploadImageResponse, error)
 
 // UploadFile uploads file to Lark server
 func (bot Bot) UploadFile(req UploadFileRequest) (*UploadFileResponse, error) {
-	file, err := os.Open(req.Path)
-	if err != nil {
-		return nil, err
+	var content io.Reader
+	if req.Reader == nil {
+		file, err := os.Open(req.Path)
+		if err != nil {
+			return nil, err
+		}
+		defer file.Close()
+		content = file
+	} else {
+		content = req.Reader
+		req.Path = req.FileName
 	}
-	defer file.Close()
 
 	body := &bytes.Buffer{}
 	writer := multipart.NewWriter(body)
@@ -122,7 +130,7 @@ func (bot Bot) UploadFile(req UploadFileRequest) (*UploadFileResponse, error) {
 	if err != nil {
 		return nil, err
 	}
-	_, err = io.Copy(part, file)
+	_, err = io.Copy(part, content)
 	if err != nil {
 		return nil, err
 	}
diff --git a/api_upload_test.go b/api_upload_test.go
index 7208a41..8fa2417 100644
--- a/api_upload_test.go
+++ b/api_upload_test.go
@@ -3,6 +3,7 @@ package lark
 import (
 	"image/jpeg"
 	"os"
+	"strings"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -41,3 +42,19 @@ func TestUploadFile(t *testing.T) {
 		assert.NotEmpty(t, resp.Data.FileKey)
 	}
 }
+
+func TestUploadFile_Binary(t *testing.T) {
+	resp, err := bot.UploadFile(UploadFileRequest{
+		FileType: "stream",
+		FileName: "test-data.csv",
+		Reader: strings.NewReader(`Name,Age,Location
+		Foo,25,Sleman
+		Bar,23,Sidoarjo
+		Baz,27,Bantul`),
+	})
+	if assert.NoError(t, err) {
+		assert.Zero(t, resp.Code)
+		t.Log(resp.Data.FileKey)
+		assert.NotEmpty(t, resp.Data.FileKey)
+	}
+}