diff --git a/dao/file.go b/dao/file.go
index c44c1f0..8133f31 100644
--- a/dao/file.go
+++ b/dao/file.go
@@ -18,11 +18,11 @@ type File struct {
 	Md5           string `gorm:"column:md5;type:varchar(255);uniqueIndex:idx_file_name"`
 }
 
-func CreateFile(fileStoreName, fileName, fileType, filePath string, fileSize, authID int, NeedAuth bool) File {
-	file := File{FileStoreName: fileStoreName, FileName: fileName, FileType: fileType, FilePath: filePath, FileSize: fileSize, AuthID: authID, NeedAuth: NeedAuth}
+func CreateFile(fileStoreName, fileName, fileType, filePath, md5Str string, fileSize, authID int, NeedAuth bool) File {
+	file := File{FileStoreName: fileStoreName, FileName: fileName, FileType: fileType, FilePath: filePath, FileSize: fileSize, AuthID: authID, NeedAuth: NeedAuth, Md5: md5Str}
 	result := DB.Create(&file)
 	if result.Error != nil {
-		return 0
+		return File{}
 	}
 	return file
 }
diff --git a/handler/tool.go b/handler/tool.go
index 42a387c..b1de959 100644
--- a/handler/tool.go
+++ b/handler/tool.go
@@ -126,6 +126,7 @@ func UploadFile(c *gin.Context) {
 	//从请求头获取upload_type
 	uploadType := c.PostForm("upload_type")
 	authType := c.PostForm("auth_type")
+	md5_ := c.PostForm("md5")
 	if uploadType == "" {
 		c.JSON(http.StatusOK, gin.H{"error": "upload_type is empty", "code": proto.ParameterError, "message": "failed"})
 		return
@@ -143,14 +144,16 @@ func UploadFile(c *gin.Context) {
 		return
 	}
 	//计算文件md5值
-	file_, _ := file.Open()
-	md5Value := service.CalculateFileMd5(file_)
-	if md5Value == "" {
-		c.JSON(http.StatusOK, gin.H{"error": "计算文件MD5值失败", "code": proto.UploadFileFailed, "message": "failed"})
-		return
+	if md5_ == "" {
+		file_, _ := file.Open()
+		md5_ = service.CalculateFileMd5(file_)
+		if md5_ == "" {
+			c.JSON(http.StatusOK, gin.H{"error": "计算文件MD5值失败", "code": proto.UploadFileFailed, "message": "failed"})
+			return
+		}
 	}
 	//查询文件是否已存在
-	fileExist := dao.FindFileByMd5(md5Value)
+	fileExist := dao.FindFileByMd5(md5_)
 	if fileExist.ID != 0 {
 		fileExist.FilePath = ""
 		c.JSON(http.StatusOK, gin.H{"code": proto.SuccessCode, "message": "success", "data": fileExist})
@@ -173,7 +176,7 @@ func UploadFile(c *gin.Context) {
 	} else if authType == "private" {
 		auth_type_ = true
 	}
-	file_record := dao.CreateFile(fileStoreName, fileName, fileType, filePath, fileSize, id1, auth_type_)
+	file_record := dao.CreateFile(fileStoreName, fileName, fileType, filePath, md5_, fileSize, id1, auth_type_)
 	if file_record.ID == 0 {
 		c.JSON(http.StatusOK, gin.H{"error": "save file info failed", "code": proto.SaveFileInfoFailed, "message": "failed"})
 		return