diff --git a/dao/file.go b/dao/file.go
index a1458c7..1df5005 100644
--- a/dao/file.go
+++ b/dao/file.go
@@ -282,3 +282,15 @@ func GetUserFileSpace(userID int) UserFileSpace {
 	}
 	return space
 }
+
+func FindFileAuthByName(fileName string, userID int) FileAuth {
+	var file FileAuth
+	var db2 *gorm.DB
+	if proto.Config.SERVER_SQL_LOG {
+		db2 = DB.Debug()
+	} else {
+		db2 = DB
+	}
+	db2.Where("user_file_name = ? and auth_id = ?", fileName, userID).First(&file)
+	return file
+}
diff --git a/service/fileService.go b/service/fileService.go
index 000a85e..c348aa3 100644
--- a/service/fileService.go
+++ b/service/fileService.go
@@ -15,6 +15,7 @@ import (
 	"os"
 	"path"
 	"regexp"
+	"strings"
 	"time"
 )
 
@@ -245,8 +246,17 @@ func DeleteUserFile(userID, fileAuthID int) error {
 }
 
 func CreateUserFile(userID int, fileAuthName string, fileID int, UploadType string) dao.FileAuth {
-	fileAuth := dao.CreateFileAuth(userID, fileID, fileAuthName, UploadType, 1, "")
-	return fileAuth
+	//先查fileAuthName是否存在
+	fileAuth := dao.FindFileAuthByName(fileAuthName, userID)
+	if fileAuth.ID != 0 {
+		log.Println("file auth name already exist, please change another name: ", fileAuthName)
+		//将要保存的文件名改为fileAuthName+uuid
+		strs := strings.Split(fileAuthName, ".")
+		fileAuthName = strs[0] + "_1." + strs[1]
+		//return fileAuth
+	}
+	fileAuth_ := dao.CreateFileAuth(userID, fileID, fileAuthName, UploadType, 1, "")
+	return fileAuth_
 }
 
 func FindUserFileList(userID int, uploadType string) []dao.UserFileListResp {
@@ -264,3 +274,7 @@ func FindUserFileList(userID int, uploadType string) []dao.UserFileListResp {
 	log.Println("FindUserFileList res:", len(res))
 	return res
 }
+
+func CreateUserFileAfterUnique() {
+
+}