diff --git a/library/upload_chunk/consts.go b/library/upload_chunk/consts.go
index 04f799d..7f3db40 100644
--- a/library/upload_chunk/consts.go
+++ b/library/upload_chunk/consts.go
@@ -1,7 +1,6 @@
 package upload_chunk
 
 const (
-	Tmp          = "./resource/public/big_file/" // 文件保存目录
-	RelativePath = "big_file/"                   // 返回前端的相对路径
-	FileName     = "upfile"                      // 上传文件的文件名
+	RelativePath = "big_file/" // 返回前端的相对路径
+	FileName     = "upfile"    // 上传文件的文件名
 )
diff --git a/library/upload_chunk/upload_chunk.go b/library/upload_chunk/upload_chunk.go
index bec7656..5699fd8 100644
--- a/library/upload_chunk/upload_chunk.go
+++ b/library/upload_chunk/upload_chunk.go
@@ -3,6 +3,8 @@ package upload_chunk
 import (
 	"errors"
 	"fmt"
+	"github.com/gogf/gf/v2/frame/g"
+	"github.com/gogf/gf/v2/os/gctx"
 	"io"
 	"log"
 	"mime/multipart"
@@ -207,7 +209,7 @@ func (u *UploadChunk) Upload(uploadReq UploadReq) (result *UpLoadRes, err error)
 }
 
 func (u *UploadChunk) Tmp() string {
-	return Tmp
+	return g.Cfg().MustGet(gctx.New(), "server.serverRoot").String() + "/big_file/" // 文件保存目录
 }
 
 // 合并文件