diff --git a/src/controllers/FileController.ts b/src/controllers/FileController.ts
index 0a1dd32..3359dcc 100644
--- a/src/controllers/FileController.ts
+++ b/src/controllers/FileController.ts
@@ -22,7 +22,7 @@ import {
   listFile,
   updateFile,
 } from "../services/edm";
-import { s3DeleteFile, s3DownloadFile, s3ListFile, s3UploadFile } from "../services/minio";
+import { s3DeleteFile, s3DownloadFile, s3ListFile, s3UploadFile, truncateFileName } from "../services/minio";
 
 @Route("api/v1/salary/file/{name}/{group}")
 @Security("bearerAuth")
@@ -257,7 +257,7 @@ export class FileController extends Controller {
 
     const map = fileList.map(async ({ fileName, ...props }) => [
       fileName,
-      await createFile(path, fileName, props),
+      await createFile(path, truncateFileName(fileName), props),
     ]);
 
     const result = await Promise.all(map).catch((e) =>
@@ -607,7 +607,7 @@ export class SubFileController extends Controller {
 
     const map = fileList.map(async ({ fileName, ...props }) => [
       fileName,
-      await createFile(path, fileName, props),
+      await createFile(path, truncateFileName(fileName), props),
     ]);
 
     const result = await Promise.all(map).catch((e) =>
diff --git a/src/services/minio.ts b/src/services/minio.ts
index 48bd91f..940d5ca 100644
--- a/src/services/minio.ts
+++ b/src/services/minio.ts
@@ -16,6 +16,26 @@ const minio = new Client({
 
 export default minio;
 
+/**
+ * ตัดชื่อไฟล์ถ้ายาวเกิน limit
+ * @param fileName - ชื่อไฟล์เดิม
+ * @param maxLength - ความยาวสูงสุดของชื่อไฟล์ (default: 50 ตัวอักษร ไม่รวมนามสกุล)
+ * @returns ชื่อไฟล์ที่ตัดแล้ว
+ */
+export function truncateFileName(fileName: string, maxLength: number = 50): string {
+  const dot = fileName.lastIndexOf(".");
+  const name = dot !== -1 && !fileName.startsWith(".") ? fileName.slice(0, dot) : fileName;
+  const ext = dot !== -1 && !fileName.startsWith(".") ? fileName.slice(dot) : "";
+
+  if (name.length <= maxLength) {
+    return fileName;
+  }
+
+  // ตัดชื่อและเติม "..." ตามด้วย 5 ตัวสุดท้ายของชื่อเดิม
+  const truncated = name.slice(0, maxLength - 8) + "..." + name.slice(-5);
+  return truncated + ext;
+}
+
 function exception(e: any): never {
   console.error(e);
   throw new Error("เกิดข้อผิดพลาดกับระบบจัดการไฟล์");
@@ -74,6 +94,11 @@ export async function s3DeleteFolder(path: string) {
 export async function s3UploadFile(replace: boolean, ...pathname: string[]) {
   if (!pathname.length) return;
 
+  // ตัดชื่อไฟล์ถ้ายาวเกิน
+  const originalFileName = pathname.at(-1) as string;
+  const truncatedFileName = truncateFileName(originalFileName);
+  pathname = [...pathname.slice(0, -1), truncatedFileName];
+
   if (!replace) {
     const list = await s3ListFile(...pathname.slice(0, -1)).catch(exception);
 
@@ -146,7 +171,7 @@ export async function s3DownloadFile(...pathname: string[]) {
 }
 
 export async function duplicateAvatarFile(refId: string, prefix: string, fileName: string) {
-   try {
+  try {
     await minio.statObject(MINIO_BUCKET, refId);
     const avatar = `${prefix}/${fileName}`;
     await minio.copyObject(
@@ -159,4 +184,4 @@ export async function duplicateAvatarFile(refId: string, prefix: string, fileNam
   }
 }
 
-export const fileLocation = (...path: string[]) => path.join("/");
+export const fileLocation = (...path: string[]) => path.join("/");
\ No newline at end of file