diff --git a/README.md b/README.md
index 302b290..71cfe89 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ tgState
 
 
 旧版本：https://tgtu.ikun123.com/  
-搭建在Vercel，大文件可能会上传失败  
+搭建在Vercel，大文件可能会上传失败(资源限制)  
 
 测试图片：
 
@@ -37,6 +37,17 @@ tgState
 部署前需要准备一个Telegram Bot(@botfather处申请)  
 如果是需要存储在频道，则需要将Bot拉入频道作为管理员，公开频道并自定义频道Link  
 
+后台管理
+===
+
+后台管理计划是全Telegram管理，Vercel目前不支持，目前实现的有：  
+
+获取FileID
+---
+
+对bot聊天中的文件引用并回复```get```可以获取FileID，搭建地址+/d/+FileID即可访问资源
+
+
 Vercel部署
 ====
 
diff --git a/control/control.go b/control/control.go
index 55bbc6c..820da9f 100644
--- a/control/control.go
+++ b/control/control.go
@@ -59,18 +59,18 @@ func UploadImageAPI(w http.ResponseWriter, r *http.Request) {
 		}
 
 		// 读取文件内容
-		fileBytes, err := io.ReadAll(file)
-		if err != nil {
-			errJsonMsg("Failed to read file", w)
-			// http.Error(w, "Failed to read file", http.StatusInternalServerError)
-			return
-		}
+		// fileBytes, err := io.ReadAll(file)
+		// if err != nil {
+		// 	errJsonMsg("Failed to read file", w)
+		// 	// http.Error(w, "Failed to read file", http.StatusInternalServerError)
+		// 	return
+		// }
 		res := conf.UploadResponse{
 			Code:    0,
 			Message: "error",
 		}
 		var img string
-		img = "/d/" + utils.UpDocument(utils.TgFileData(header.Filename, fileBytes))
+		img = "/d/" + utils.UpDocument(utils.TgFileData(header.Filename, file))
 		res = conf.UploadResponse{
 			Code:    1,
 			Message: img,
diff --git a/utils/utils.go b/utils/utils.go
index d2fc59f..28e421b 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -2,20 +2,21 @@ package utils
 
 import (
 	"encoding/json"
+	"io"
 	"log"
 
 	"csz.net/tgstate/conf"
 	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
 )
 
-func TgFileData(fileName string, fileData []byte) tgbotapi.FileBytes {
-	return tgbotapi.FileBytes{
-		Name:  fileName,
-		Bytes: fileData,
+func TgFileData(fileName string, fileData io.Reader) tgbotapi.FileReader {
+	return tgbotapi.FileReader{
+		Name:   fileName,
+		Reader: fileData,
 	}
 }
 
-func UpDocument(fileData tgbotapi.FileBytes) string {
+func UpDocument(fileData tgbotapi.FileReader) string {
 	bot, err := tgbotapi.NewBotAPI(conf.BotToken)
 	if err != nil {
 		log.Panic(err)