diff --git a/bun.lockb b/bun.lockb
index 4c2db6c..5d3ebef 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/package.json b/package.json
index fb2182d..58c36f1 100644
--- a/package.json
+++ b/package.json
@@ -27,10 +27,12 @@
     "clsx": "^2.1.1",
     "country-flag-icons": "^1.5.13",
     "framer-motion": "^11.11.17",
+    "i18next": "^24.0.0",
     "lucide-react": "^0.460.0",
     "luxon": "^3.5.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
+    "react-i18next": "^15.1.1",
     "react-router-dom": "^6.28.0",
     "react-use-websocket": "^4.11.1",
     "recharts": "^2.13.3",
diff --git a/src/components/Header.tsx b/src/components/Header.tsx
index ee204c7..ce1372c 100644
--- a/src/components/Header.tsx
+++ b/src/components/Header.tsx
@@ -1,4 +1,3 @@
-// import { LanguageSwitcher } from "@/components/LanguageSwitcher";
 import { ModeToggle } from "@/components/ThemeSwitcher";
 import { Separator } from "@/components/ui/separator";
 import { Skeleton } from "@/components/ui/skeleton";
@@ -6,6 +5,8 @@ import { fetchLoginUser } from "@/lib/nezha-api";
 import { useQuery } from "@tanstack/react-query";
 import { DateTime } from "luxon";
 import { useEffect, useRef, useState } from "react";
+import { useTranslation } from "react-i18next";
+import { LanguageSwitcher } from "./LanguageSwitcher";
 
 function Header() {
   return (
@@ -32,7 +33,7 @@ function Header() {
         </section>
         <section className="flex items-center gap-2">
           <DashboardLink />
-          {/* <LanguageSwitcher /> */}
+          <LanguageSwitcher />
           <ModeToggle />
         </section>
       </section>
@@ -80,6 +81,7 @@ const useInterval = (callback: () => void, delay: number | null) => {
   }, [delay]);
 };
 function Overview() {
+  const { t } = useTranslation();
   const [mouted, setMounted] = useState(false);
   useEffect(() => {
     setMounted(true);
@@ -94,7 +96,7 @@ function Overview() {
   }, 1000);
   return (
     <section className={"mt-10 flex flex-col md:mt-16"}>
-      <p className="text-base font-semibold">👋 Overview</p>
+      <p className="text-base font-semibold">👋 {t("overview")}</p>
       <div className="flex items-center gap-1.5">
         <p className="text-sm font-medium opacity-50">where the time is</p>
         {mouted ? (
diff --git a/src/components/LanguageSwitcher.tsx b/src/components/LanguageSwitcher.tsx
new file mode 100644
index 0000000..872ebe1
--- /dev/null
+++ b/src/components/LanguageSwitcher.tsx
@@ -0,0 +1,56 @@
+"use client";
+
+import { Button } from "@/components/ui/button";
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu";
+
+import { CheckCircleIcon } from "@heroicons/react/20/solid";
+import { useTranslation } from "react-i18next";
+
+export function LanguageSwitcher() {
+  const { t, i18n } = useTranslation();
+
+  const locale = i18n.language;
+
+  const handleSelect = (e: Event, newLocale: string) => {
+    e.preventDefault(); // 阻止默认的关闭行为
+    i18n.changeLanguage(newLocale);
+  };
+
+  const localeItems = [
+    { name: t("language.zh-CN"), code: "zh-CN" },
+    { name: t("language.zh-TW"), code: "zh-TW" },
+    { name: t("language.en"), code: "en" },
+  ];
+
+  return (
+    <DropdownMenu>
+      <DropdownMenuTrigger asChild>
+        <Button
+          variant="outline"
+          size="sm"
+          className="rounded-full px-[9px] bg-white dark:bg-black"
+        >
+          {localeItems.find((item) => item.code === locale)?.name}
+          <span className="sr-only">Change language</span>
+        </Button>
+      </DropdownMenuTrigger>
+      <DropdownMenuContent className="flex flex-col gap-0.5" align="end">
+        {localeItems.map((item) => (
+          <DropdownMenuItem
+            key={item.code}
+            onSelect={(e) => handleSelect(e, item.code)}
+            className={locale === item.code ? "bg-muted gap-3" : ""}
+          >
+            {item.name}{" "}
+            {locale === item.code && <CheckCircleIcon className="size-4" />}
+          </DropdownMenuItem>
+        ))}
+      </DropdownMenuContent>
+    </DropdownMenu>
+  );
+}
diff --git a/src/components/ThemeSwitcher.tsx b/src/components/ThemeSwitcher.tsx
index b8b1384..2926e14 100644
--- a/src/components/ThemeSwitcher.tsx
+++ b/src/components/ThemeSwitcher.tsx
@@ -9,8 +9,11 @@ import { cn } from "@/lib/utils";
 import { Moon, Sun } from "lucide-react";
 import { Theme } from "@/components/ThemeProvider";
 import { useTheme } from "../hooks/use-theme";
+import { CheckCircleIcon } from "@heroicons/react/20/solid";
+import { useTranslation } from 'react-i18next';
 
 export function ModeToggle() {
+  const {t} = useTranslation();
   const { setTheme, theme } = useTheme();
 
   const handleSelect = (e: Event, newTheme: Theme) => {
@@ -36,19 +39,22 @@ export function ModeToggle() {
           className={cn({ "gap-3 bg-muted": theme === "light" })}
           onSelect={(e) => handleSelect(e, "light")}
         >
-          Light
+          {t("theme.light")}
+          {theme === "light" && <CheckCircleIcon className="size-4" />}
         </DropdownMenuItem>
         <DropdownMenuItem
           className={cn({ "gap-3 bg-muted": theme === "dark" })}
           onSelect={(e) => handleSelect(e, "dark")}
         >
-          Dark
+          {t("theme.dark")}
+          {theme === "dark" && <CheckCircleIcon className="size-4" />}
         </DropdownMenuItem>
         <DropdownMenuItem
           className={cn({ "gap-3 bg-muted": theme === "system" })}
           onSelect={(e) => handleSelect(e, "system")}
         >
-          System
+          {t("theme.system")}
+          {theme === "system" && <CheckCircleIcon className="size-4" />}
         </DropdownMenuItem>
       </DropdownMenuContent>
     </DropdownMenu>
diff --git a/src/components/ui/dropdown-menu.tsx b/src/components/ui/dropdown-menu.tsx
index e209caa..702e290 100644
--- a/src/components/ui/dropdown-menu.tsx
+++ b/src/components/ui/dropdown-menu.tsx
@@ -63,7 +63,7 @@ const DropdownMenuContent = React.forwardRef<
       ref={ref}
       sideOffset={sideOffset}
       className={cn(
-        "z-50 min-w-[8rem] overflow-hidden rounded-md border bg-popover p-1 text-popover-foreground shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
+        "z-50 min-w-[8rem] overflow-hidden rounded-md border bg-popover p-1 text-popover-foreground shadow-2xl data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
         className,
       )}
       {...props}
@@ -81,7 +81,7 @@ const DropdownMenuItem = React.forwardRef<
   <DropdownMenuPrimitive.Item
     ref={ref}
     className={cn(
-      "relative flex cursor-default select-none items-center gap-2 rounded-[10px] px-2 py-1.5 text-sm outline-none transition-colors focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
+      "relative flex cursor-default justify-between select-none items-center gap-2 rounded-[10px] px-2 py-1.5 text-sm outline-none transition-colors focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
       inset && "pl-8",
       className,
     )}
diff --git a/src/i18n.js b/src/i18n.js
new file mode 100644
index 0000000..5366a6b
--- /dev/null
+++ b/src/i18n.js
@@ -0,0 +1,29 @@
+import i18n from "i18next";
+import { initReactI18next } from "react-i18next";
+
+import enTranslation from "./locales/en/translation.json";
+import zhCNTranslation from "./locales/zh-CN/translation.json";
+import zhTWTranslation from "./locales/zh-TW/translation.json";
+
+const resources = {
+  en: {
+    translation: enTranslation,
+  },
+  "zh-CN": {
+    translation: zhCNTranslation,
+  },
+  "zh-TW": {
+    translation: zhTWTranslation,
+  },
+};
+
+i18n.use(initReactI18next).init({
+  resources,
+  lng: "zh-CN", // 默认语言
+  fallbackLng: "en", // 当前语言的翻译没有找到时，使用的备选语言
+  interpolation: {
+    escapeValue: false, // react已经安全地转义
+  },
+});
+
+export default i18n;
diff --git a/src/locales/en/translation.json b/src/locales/en/translation.json
new file mode 100644
index 0000000..2d804f9
--- /dev/null
+++ b/src/locales/en/translation.json
@@ -0,0 +1,13 @@
+{
+  "overview": "Overview",
+  "language": {
+"zh-CN": "简体中文",
+  "zh-TW": "繁體中文",
+  "en": "English"
+  },
+  "theme": {
+    "light": "Light",
+    "dark": "Dark",
+    "system": "System"
+  }
+}
diff --git a/src/locales/zh-CN/translation.json b/src/locales/zh-CN/translation.json
new file mode 100644
index 0000000..6f9cf3a
--- /dev/null
+++ b/src/locales/zh-CN/translation.json
@@ -0,0 +1,13 @@
+{
+  "overview": "概览",
+  "language": {
+    "zh-CN": "简体中文",
+    "zh-TW": "繁體中文",
+    "en": "English"
+  },
+  "theme": {
+    "light": "亮色",
+    "dark": "暗色",
+    "system": "跟随系统"
+  }
+}
diff --git a/src/locales/zh-TW/translation.json b/src/locales/zh-TW/translation.json
new file mode 100644
index 0000000..cd21860
--- /dev/null
+++ b/src/locales/zh-TW/translation.json
@@ -0,0 +1,13 @@
+{
+  "overview": "概覽",
+  "language": {
+    "zh-CN": "简体中文",
+    "zh-TW": "繁體中文",
+    "en": "English"
+  },
+  "theme": {
+    "light": "亮色",
+    "dark": "暗色",
+    "system": "跟随系統"
+  }
+}
diff --git a/src/main.tsx b/src/main.tsx
index 0adcda8..644d38b 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -2,6 +2,7 @@ import React from "react";
 import ReactDOM from "react-dom/client";
 import App from "./App";
 import "./index.css";
+import "./i18n";
 import { ThemeProvider } from "./components/ThemeProvider";
 import { ReactQueryDevtools } from "@tanstack/react-query-devtools";
 import { QueryClient, QueryClientProvider } from "@tanstack/react-query";