diff --git a/src/main/constant.ts b/src/main/constant.ts
index f37c235cb2..4ec56765b7 100644
--- a/src/main/constant.ts
+++ b/src/main/constant.ts
@@ -2,3 +2,4 @@ export const isMac = process.platform === 'darwin'
 export const isWin = process.platform === 'win32'
 export const isLinux = process.platform === 'linux'
 export const isDev = process.env.NODE_ENV === 'development'
+export const isPortable = isWin && 'PORTABLE_EXECUTABLE_DIR' in process.env
diff --git a/src/main/index.ts b/src/main/index.ts
index 7285b1b5e2..be648d55f1 100644
--- a/src/main/index.ts
+++ b/src/main/index.ts
@@ -12,6 +12,7 @@ import { CHERRY_STUDIO_PROTOCOL, handleProtocolUrl, registerProtocolClient } fro
 import { registerShortcuts } from './services/ShortcutService'
 import { TrayService } from './services/TrayService'
 import { windowService } from './services/WindowService'
+import { setAppDataDir } from './utils/file'
 
 // Check for single instance lock
 if (!app.requestSingleInstanceLock()) {
@@ -50,6 +51,8 @@ if (!app.requestSingleInstanceLock()) {
 
     replaceDevtoolsFont(mainWindow)
 
+    setAppDataDir()
+
     if (process.env.NODE_ENV === 'development') {
       installExtension([REDUX_DEVTOOLS, REACT_DEVELOPER_TOOLS])
         .then((name) => console.log(`Added Extension:  ${name}`))
diff --git a/src/main/utils/file.ts b/src/main/utils/file.ts
index de091555ec..7d120801bc 100644
--- a/src/main/utils/file.ts
+++ b/src/main/utils/file.ts
@@ -2,6 +2,7 @@ import * as fs from 'node:fs'
 import os from 'node:os'
 import path from 'node:path'
 
+import { isPortable } from '@main/constant'
 import { audioExts, documentExts, imageExts, textExts, videoExts } from '@shared/config/constant'
 import { FileType, FileTypes } from '@types'
 import { app } from 'electron'
@@ -83,3 +84,12 @@ export function getConfigDir() {
 export function getAppConfigDir(name: string) {
   return path.join(getConfigDir(), name)
 }
+
+export function setAppDataDir() {
+  if (isPortable) {
+    const dir = path.join(path.dirname(app.getPath('exe')), 'data')
+    if (fs.existsSync(dir)) {
+      app.setPath('appData', dir)
+    }
+  }
+}