diff --git a/changelog.md b/changelog.md
index c02ad15..b7908ca 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,7 @@
+### New Features
+
+- 自动删除过期日志与更新缓存
+
 ### Bug Fixes
 
 - 修复接管dns后自定义hosts无法删除的问题
diff --git a/src/main/utils/init.ts b/src/main/utils/init.ts
index 99cbb9c..0a23ffa 100644
--- a/src/main/utils/init.ts
+++ b/src/main/utils/init.ts
@@ -20,7 +20,7 @@ import {
   defaultProfileConfig
 } from './template'
 import yaml from 'yaml'
-import { mkdir, writeFile, copyFile } from 'fs/promises'
+import { mkdir, writeFile, copyFile, rm, readdir } from 'fs/promises'
 import { existsSync } from 'fs'
 import path from 'path'
 import { startPacServer } from '../resolve/server'
@@ -90,6 +90,26 @@ async function initFiles(): Promise<void> {
   ])
 }
 
+async function cleanup(): Promise<void> {
+  // update cache
+  const files = await readdir(dataDir())
+  for (const file of files) {
+    if (file.endsWith('.exe') || file.endsWith('.dmg')) {
+      await rm(path.join(dataDir(), file))
+    }
+  }
+  // logs
+  const { maxLogDays = 7 } = await getAppConfig()
+  const logs = await readdir(logDir())
+  for (const log of logs) {
+    const date = new Date(log.split('.')[0])
+    const diff = Date.now() - date.getTime()
+    if (diff > maxLogDays * 24 * 60 * 60 * 1000) {
+      await rm(path.join(logDir(), log))
+    }
+  }
+}
+
 function initDeeplink(): void {
   if (process.defaultApp) {
     if (process.argv.length >= 2) {
@@ -106,6 +126,7 @@ export async function init(): Promise<void> {
   await initDirs()
   await initConfig()
   await initFiles()
+  await cleanup()
   await startPacServer()
   const { sysProxy } = await getAppConfig()
   await triggerSysProxy(sysProxy.enable)
diff --git a/src/main/utils/template.ts b/src/main/utils/template.ts
index 75a8797..1a9b1ef 100644
--- a/src/main/utils/template.ts
+++ b/src/main/utils/template.ts
@@ -3,6 +3,7 @@ export const defaultConfig: IAppConfig = {
   silentStart: false,
   appTheme: 'system',
   proxyInTray: true,
+  maxLogDays: 7,
   proxyDisplayMode: 'simple',
   proxyDisplayOrder: 'default',
   autoCheckUpdate: true,
diff --git a/src/renderer/src/pages/mihomo.tsx b/src/renderer/src/pages/mihomo.tsx
index c39f4eb..5945451 100644
--- a/src/renderer/src/pages/mihomo.tsx
+++ b/src/renderer/src/pages/mihomo.tsx
@@ -17,7 +17,7 @@ const CoreMap = {
 
 const Mihomo: React.FC = () => {
   const { appConfig, patchAppConfig } = useAppConfig()
-  const { core = 'mihomo' } = appConfig || {}
+  const { core = 'mihomo', maxLogDays = 7 } = appConfig || {}
   const { controledMihomoConfig, patchControledMihomoConfig } = useControledMihomoConfig()
   const {
     ipv6,
@@ -340,6 +340,17 @@ const Mihomo: React.FC = () => {
               }}
             />
           </SettingItem>
+          <SettingItem title="日志保留天数" divider>
+            <Input
+              size="sm"
+              type="number"
+              className="w-[100px]"
+              value={maxLogDays.toString()}
+              onValueChange={(v) => {
+                patchAppConfig({ maxLogDays: parseInt(v) })
+              }}
+            />
+          </SettingItem>
           <SettingItem title="日志等级" divider>
             <Select
               className="w-[100px]"
diff --git a/src/shared/types.d.ts b/src/shared/types.d.ts
index c9d9aa5..9071cdf 100644
--- a/src/shared/types.d.ts
+++ b/src/shared/types.d.ts
@@ -214,7 +214,7 @@ interface IAppConfig {
   core: 'mihomo' | 'mihomo-alpha'
   proxyDisplayMode: 'simple' | 'full'
   proxyDisplayOrder: 'default' | 'delay' | 'name'
-  envType: 'bash' | 'cmd' | 'powershell'
+  envType?: 'bash' | 'cmd' | 'powershell'
   proxyInTray: boolean
   siderOrder: string[]
   appTheme: AppTheme
@@ -222,6 +222,7 @@ interface IAppConfig {
   silentStart: boolean
   autoCloseConnection: boolean
   sysProxy: ISysProxyConfig
+  maxLogDays: number
   userAgent?: string
   delayTestUrl?: string
   delayTestTimeout?: number