diff --git a/Tiobon.Core.Api/Controllers/FileController.cs b/Tiobon.Core.Api/Controllers/FileController.cs
index 764bfdb7..495e14cb 100644
--- a/Tiobon.Core.Api/Controllers/FileController.cs
+++ b/Tiobon.Core.Api/Controllers/FileController.cs
@@ -109,9 +109,9 @@ public class FileController : BaseApiController
         string pathHeader = "wwwroot/files/" + filePath;
         if (!Directory.Exists(pathHeader))
             Directory.CreateDirectory(pathHeader);
-        long fileName = SnowFlakeSingle.instance.getID();
+        var fileName = upload.fileName.Replace("." + ext, "_") + DateTime.Now.ToString("yyyyMMddHHmmss");
 
-        filePath = "/files/" + filePath + "/" + $"{upload.fileName}_{fileName}.{ext}";
+        filePath = "/files/" + filePath + "/" + $"{fileName}.{ext}";
         //var filepath = Path.Combine(pathHeader, file.FileName);
         using (var stream = global::System.IO.File.Create("wwwroot/" + filePath))
         {
@@ -123,7 +123,7 @@ public class FileController : BaseApiController
         fileAttachment.AttachFileName = upload.file.FileName;
         fileAttachment.CreateBy = App.User.ID;
         fileAttachment.CreateTime = DateTime.Now;
-        fileAttachment.AttachmentName = fileName.ToString();
+        fileAttachment.AttachmentName = fileName;
         fileAttachment.AttachFileExtension = ext;
         fileAttachment.AttachFileSize = upload.file.Length;
         fileAttachment.PhysicsPath = filePath;
@@ -139,7 +139,7 @@ public class FileController : BaseApiController
             Id = fileAttachment.Id,
             AttachFileExtension = fileAttachment.AttachFileExtension,
             AttachFileName = fileAttachment.AttachFileName,
-            AttachmentName = fileAttachment.AttachmentName,
+            AttachmentName = fileName,
             AttachmentNo = fileAttachment.AttachmentNo,
             FileURL = fileAttachment.FileURL,
             PhysicsPath = fileAttachment.PhysicsPath,