diff --git a/components/utility/profile-settings.tsx b/components/utility/profile-settings.tsx
index 373be95..0e7d217 100644
--- a/components/utility/profile-settings.tsx
+++ b/components/utility/profile-settings.tsx
@@ -134,6 +134,14 @@ export const ProfileSettings: FC<ProfileSettingsProps> = ({}) => {
   const handleSignOut = async () => {
     await supabase.auth.signOut()
 
+    // ✅ 清除 localStorage 中的语言偏好
+    if (typeof window !== "undefined") {
+      localStorage.removeItem("preferred-language")
+    }
+
+    // ✅ 清除 Cookie 中的语言偏好（设置 max-age=0 立即过期）
+    document.cookie = "preferred-language=; path=/; max-age=0"    
+
     const pathSegments = pathname.split("/").filter(Boolean)
     const locales = i18nConfig.locales
     const defaultLocale = i18nConfig.defaultLocale
@@ -146,7 +154,6 @@ export const ProfileSettings: FC<ProfileSettingsProps> = ({}) => {
       locale = segment
     }
   
-    // const loginPath = locale === defaultLocale ? "/login" : `/${locale}/login`
     const homePath = locale === defaultLocale ? "/" : `/${locale}`
   
     router.push(homePath)