diff --git a/src/app.tsx b/src/app.tsx
index 5a4c133..24f1eb3 100644
--- a/src/app.tsx
+++ b/src/app.tsx
@@ -5,6 +5,7 @@ import { calculate_token_length, Message } from "./chatgpt";
 import getDefaultParams from "./getDefaultParam";
 import ChatBOX from "./chatbox";
 import models from "./models";
+import { Tr, langCodeContext, LANG_OPTIONS } from "./translate";
 
 import CHATGPT_API_WEB_VERSION from "./CHATGPT_API_WEB_VERSION";
 
@@ -245,7 +246,7 @@ export function App() {
             className="bg-violet-300 p-1 rounded hover:bg-violet-400"
             onClick={handleNewChatStore}
           >
-            NEW
+            {Tr("NEW")}
           </button>
           <ul>
             {allChatStoreIndexes
@@ -303,7 +304,7 @@ export function App() {
             setAllChatStoreIndexes([...newAllChatStoreIndexes]);
           }}
         >
-          DEL
+          {Tr("DEL")}
         </button>
       </div>
       <ChatBOX
diff --git a/src/chatbox.tsx b/src/chatbox.tsx
index 5aad2d6..b855cd6 100644
--- a/src/chatbox.tsx
+++ b/src/chatbox.tsx
@@ -1,3 +1,4 @@
+import { Tr, langCodeContext, LANG_OPTIONS } from "./translate";
 import structuredClone from "@ungap/structured-clone";
 import { createRef } from "preact";
 import { StateUpdater, useEffect, useState } from "preact/hooks";
@@ -281,7 +282,7 @@ export default function ChatBOX(props: {
               : chatStore.systemMessageContent}
           </button>{" "}
           <button className="underline">
-            {chatStore.streamMode ? "STREAM" : "FETCH"}
+            {chatStore.streamMode ? Tr("STREAM") : Tr("FETCH")}
           </button>
         </div>
         <div className="text-xs">
@@ -293,14 +294,14 @@ export default function ChatBOX(props: {
             </span>
           </span>{" "}
           <span>
-            Cut:{" "}
+            {Tr("Cut")}:{" "}
             <span className="underline">
               {chatStore.postBeginIndex}/
               {chatStore.history.filter(({ hide }) => !hide).length}
             </span>{" "}
           </span>{" "}
           <span>
-            Cost:{" "}
+            {Tr("Cost")}:{" "}
             <span className="underline">${chatStore.cost.toFixed(4)}</span>
           </span>
         </div>
@@ -308,12 +309,12 @@ export default function ChatBOX(props: {
       <div className="grow overflow-scroll">
         {!chatStore.apiKey && (
           <p className="opacity-60 p-6 rounded bg-white my-3 text-left dark:text-black">
-            请先在上方设置 (OPENAI) API KEY
+            {Tr("Please click above to set")} (OpenAI) API KEY
           </p>
         )}
         {!chatStore.apiEndpoint && (
           <p className="opacity-60 p-6 rounded bg-white my-3 text-left dark:text-black">
-            请先在上方设置 API Endpoint
+            {Tr("Please click above to set")} API Endpoint
           </p>
         )}
         {templateAPIs.length > 0 &&
@@ -321,7 +322,7 @@ export default function ChatBOX(props: {
             !chatStore.apiEndpoint ||
             !chatStore.apiKey) && (
             <p className="break-all opacity-80 p-3 rounded bg-white my-3 text-left dark:text-black">
-              <h2>已保存的 API 模板</h2>
+              <h2>{Tr("Saved API templates")}</h2>
               <hr className="my-2" />
               <div className="flex flex-wrap">
                 {templateAPIs.map((t, index) => (
@@ -377,7 +378,7 @@ export default function ChatBOX(props: {
         {templates.length > 0 &&
           chatStore.history.filter((msg) => !msg.example).length == 0 && (
             <p className="break-all opacity-80 p-3 rounded bg-white my-3 text-left dark:text-black">
-              <h2>Templates</h2>
+              <h2>{Tr("Saved prompt templates")}</h2>
               <hr className="my-2" />
               <div className="flex flex-wrap">
                 {templates.map((t, index) => (
@@ -439,21 +440,15 @@ export default function ChatBOX(props: {
           )}
         {chatStore.history.length === 0 && (
           <p className="break-all opacity-60 p-6 rounded bg-white my-3 text-left dark:text-black">
-            暂无历史对话记录
-            <br />
-            ⚙Model: {chatStore.model}
-            <br />
-            ⬆点击上方更改此对话的参数（请勿泄漏）
-            <br />
-            ↖点击左上角 NEW 新建对话
-            <br />
-            请注意，使用 ChatGPT API
-            的生成文本质量和速度会受到会话上下文的影响，同时历史上下文过长会被裁切。API
-            会根据发送的上下文总量进行计费，因此建议您为不相关的问题或者不需要上文的问题创建新的对话，以避免不必要的计费。
-            <br />
-            ⚠所有历史对话与参数储存在浏览器本地
-            <br />
-            ⚠详细文档与源代码:{" "}
+            {Tr("No chat history here")}
+            <br />⚙{Tr("Model")}: {chatStore.model}
+            <br />⬆{Tr("Click above to change the settings of this chat")}
+            <br />↖{Tr("Click the conor to create a new chat")}
+            <br />⚠
+            {Tr(
+              "All chat history and settings are stored in the local browser"
+            )}
+            <br />⚠{Tr("Documents and source code are avaliable here")}:{" "}
             <a
               className="underline"
               href="https://github.com/heimoshuiyu/chatgpt-api-web"
@@ -473,7 +468,7 @@ export default function ChatBOX(props: {
         ))}
         {showGenerating && (
           <p className="p-2 my-2 animate-pulse dark:text-white message-content">
-            {generatingMessage || "生成中，最长可能需要一分钟，请保持网络稳定"}
+            {generatingMessage || Tr("Generating...")}
             ...
           </p>
         )}
@@ -495,7 +490,7 @@ export default function ChatBOX(props: {
                 await complete();
               }}
             >
-              Re-Generate
+              {Tr("Re-Generate")}
             </button>
           )}
           {chatStore.develop_mode && chatStore.history.length > 0 && (
@@ -506,25 +501,29 @@ export default function ChatBOX(props: {
                 await complete();
               }}
             >
-              Completion
+              {Tr("Completion")}
             </button>
           )}
         </p>
         <p className="p-2 my-2 text-center opacity-50 dark:text-white">
           {chatStore.responseModelName && (
-            <>Generated by {chatStore.responseModelName}</>
+            <>
+              {Tr("Generated by")} {chatStore.responseModelName}
+            </>
           )}
           {chatStore.postBeginIndex !== 0 && (
             <>
               <br />
-              提示：会话过长，已裁切前 {chatStore.postBeginIndex} 条消息
+              {Tr("Info: chat history is too long, forget messages")}:{" "}
+              {chatStore.postBeginIndex}
             </>
           )}
         </p>
         {chatStore.chatgpt_api_web_version < "v1.3.0" && (
           <p className="p-2 my-2 text-center dark:text-white">
             <br />
-            提示：当前会话版本 {chatStore.chatgpt_api_web_version}。
+            {Tr("Warning: current chatStore version")}:{" "}
+            {chatStore.chatgpt_api_web_version} {"< v1.3.0"}
             <br />
             v1.3.0
             引入与旧版不兼容的消息裁切算法。继续使用旧版可能会导致消息裁切过多或过少（表现为失去上下文或输出不完整）。
@@ -535,8 +534,8 @@ export default function ChatBOX(props: {
         {chatStore.chatgpt_api_web_version < "v1.4.0" && (
           <p className="p-2 my-2 text-center dark:text-white">
             <br />
-            提示：当前会话版本 {chatStore.chatgpt_api_web_version} {"< v1.4.0"}
-            。
+            {Tr("Warning: current chatStore version")}:{" "}
+            {chatStore.chatgpt_api_web_version} {"< v1.4.0"}
             <br />
             v1.4.0 增加了更多参数，继续使用旧版可能因参数确实导致未定义的行为
             <br />
@@ -546,7 +545,9 @@ export default function ChatBOX(props: {
         {chatStore.chatgpt_api_web_version < "v1.6.0" && (
           <p className="p-2 my-2 text-center dark:text-white">
             <br />
-            提示：当前会话版本 {chatStore.chatgpt_api_web_version} {"< v1.6.0"}
+            提示：当前会话版本 {chatStore.chatgpt_api_web_version}
+            {Tr("Warning: current chatStore version")}:{" "}
+            {chatStore.chatgpt_api_web_version} {"< v1.6.0"}
             。
             <br />
             v1.6.0 开始保存会话模板时会将 apiKey 和 apiEndpoint
@@ -564,7 +565,7 @@ export default function ChatBOX(props: {
                 await complete();
               }}
             >
-              Retry
+              {Tr("Retry")}
             </button>
           </p>
         )}
@@ -594,7 +595,7 @@ export default function ChatBOX(props: {
             send(inputMsg);
           }}
         >
-          Send
+          {Tr("Send")}
         </button>
         {chatStore.whisper_api &&
           (chatStore.whisper_key || chatStore.apiKey) && (
@@ -721,7 +722,7 @@ export default function ChatBOX(props: {
               setChatStore({ ...chatStore });
             }}
           >
-            Assistant
+            {Tr("Assistant")}
           </button>
         )}
         {chatStore.develop_mode && (
@@ -741,7 +742,7 @@ export default function ChatBOX(props: {
               setChatStore({ ...chatStore });
             }}
           >
-            User
+            {Tr("User")}
           </button>
         )}
       </div>
diff --git a/src/main.tsx b/src/main.tsx
index 2af1859..15271f9 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -1,4 +1,16 @@
-import { render } from 'preact'
-import { App } from './app'
+import { render } from "preact";
+import { App } from "./app";
+import { useState } from "preact/hooks";
+import { Tr, langCodeContext, LANG_OPTIONS } from "./translate";
 
-render(<App />, document.getElementById('app') as HTMLElement)
+function Base() {
+  const [langCode, setLangCode] = useState("en-US");
+  return (
+    /* @ts-ignore */
+    <langCodeContext.Provider value={{ langCode, setLangCode }}>
+      <App />
+    </langCodeContext.Provider>
+  );
+}
+
+render(<Base />, document.getElementById("app") as HTMLElement);
diff --git a/src/message.tsx b/src/message.tsx
index 65e94a3..0baec80 100644
--- a/src/message.tsx
+++ b/src/message.tsx
@@ -1,3 +1,4 @@
+import { Tr, langCodeContext, LANG_OPTIONS } from "./translate";
 import { useState, useEffect, StateUpdater } from "preact/hooks";
 import { ChatStore, ChatStoreMessage } from "./app";
 import { calculate_token_length } from "./chatgpt";
@@ -54,7 +55,7 @@ function EditMessage(props: EditMessageProps) {
               setShowEdit(false);
             }}
           >
-            Close
+            {Tr("Close")}
           </button>
         </div>
       </div>
@@ -101,7 +102,7 @@ export default function Message(props: Props) {
         "bg-purple-400 p-1 rounded shadow-md absolute z-20 left-1/2 top-3/4 transform -translate-x-1/2 -translate-y-1/2"
       }
     >
-      Message Copied to clipboard!
+      {Tr("Message copied to clipboard!")}
     </span>
   );
 
@@ -212,13 +213,13 @@ export default function Message(props: Props) {
                   setChatStore({ ...chatStore });
                 }}
               >
-                <label className="dark:text-white">example</label>
+                <label className="dark:text-white">{Tr("example")}</label>
                 <input type="checkbox" checked={chat.example} />
               </span>
               <span
                 onClick={(event: any) => setRenderWorkdown(!renderMarkdown)}
               >
-                <label className="dark:text-white">render</label>
+                <label className="dark:text-white">{Tr("render")}</label>
                 <input type="checkbox" checked={renderMarkdown} />
               </span>
             </div>
diff --git a/src/settings.tsx b/src/settings.tsx
index e0f66d3..2975d53 100644
--- a/src/settings.tsx
+++ b/src/settings.tsx
@@ -1,8 +1,9 @@
 import { createRef } from "preact";
-import { StateUpdater, useEffect, useState } from "preact/hooks";
+import { StateUpdater, useContext, useEffect, useState } from "preact/hooks";
 import { ChatStore, TemplateAPI, clearTotalCost, getTotalCost } from "./app";
 import models from "./models";
 import { TemplateChatStore } from "./chatbox";
+import { tr, Tr, langCodeContext, LANG_OPTIONS } from "./translate";
 
 const Help = (props: { children: any; help: string }) => {
   return (
@@ -95,6 +96,43 @@ const Input = (props: {
     </Help>
   );
 };
+
+const Slicer = (props: {
+  chatStore: ChatStore;
+  setChatStore: (cs: ChatStore) => void;
+  field: "temperature";
+  help: string;
+}) => {
+  return (
+    <Help help={props.help}>
+      <label className="m-2 p-2">{props.field}</label>
+      <span>
+        <input
+          type="range"
+          min="0"
+          max="1"
+          step="0.01"
+          value={props.chatStore[props.field]}
+          onChange={(event: any) => {
+            const value = parseFloat(event.target.value);
+            props.chatStore[props.field] = value;
+            props.setChatStore({ ...props.chatStore });
+          }}
+        />
+        <input
+          type="number"
+          value={props.chatStore[props.field]}
+          onChange={(event: any) => {
+            const value = parseFloat(event.target.value);
+            props.chatStore[props.field] = value;
+            props.setChatStore({ ...props.chatStore });
+          }}
+        />
+      </span>
+    </Help>
+  );
+};
+
 const Number = (props: {
   chatStore: ChatStore;
   setChatStore: (cs: ChatStore) => void;
@@ -103,7 +141,6 @@ const Number = (props: {
     | "maxTokens"
     | "tokenMargin"
     | "postBeginIndex"
-    | "temperature"
     | "top_p"
     | "presence_penalty"
     | "frequency_penalty";
@@ -179,6 +216,8 @@ export default (props: {
 
   const importFileRef = createRef();
   const [totalCost, setTotalCost] = useState(getTotalCost());
+  // @ts-ignore
+  const { langCode, setLangCode } = useContext(langCodeContext);
 
   useEffect(() => {
     const handleKeyPress = (event: any) => {
@@ -206,26 +245,38 @@ export default (props: {
         }}
         className="m-2 p-2 bg-white rounded-lg h-fit lg:w-2/3 z-20"
       >
-        <h3 className="text-xl text-center">Settings</h3>
+        <h3 className="text-xl text-center">
+          <span>{Tr("Settings")}</span>
+          <select>
+            {Object.keys(LANG_OPTIONS).map((opt) => (
+              <option
+                value={opt}
+                selected={opt === (langCodeContext as any).langCode}
+                onClick={(event: any) => {
+                  console.log("set lang code", event.target.value);
+                  setLangCode(event.target.value);
+                }}
+              >
+                {LANG_OPTIONS[opt].name}
+              </option>
+            ))}
+          </select>
+        </h3>
         <hr />
         <div className="flex justify-between">
           <button
             className="p-2 m-2 rounded bg-purple-600 text-white"
             onClick={() => {
               navigator.clipboard.writeText(link);
-              alert(`Copied link: ${link}`);
+              alert(tr(`Copied link:`, langCode) + `${link}`);
             }}
           >
-            Copy Link
+            {Tr("Copy Setting Link")}
           </button>
           <button
             className="p-2 m-2 rounded bg-rose-600 text-white"
             onClick={() => {
-              if (
-                !confirm(
-                  `Are you sure to clear all ${props.chatStore.history.length} messages?`
-                )
-              )
+              if (!confirm(tr("Are you sure to clear all history?", langCode)))
                 return;
               props.chatStore.history = props.chatStore.history.filter(
                 (msg) => msg.example && !msg.hide
@@ -234,7 +285,7 @@ export default (props: {
               props.setChatStore({ ...props.chatStore });
             }}
           >
-            Clear History
+            {Tr("Clear History")}
           </button>
           <button
             className="p-2 m-2 rounded bg-cyan-600 text-white"
@@ -242,11 +293,11 @@ export default (props: {
               props.setShow(false);
             }}
           >
-            Close
+            {Tr("Close")}
           </button>
         </div>
         <p className="m-2 p-2">
-          Total cost in this session ${props.chatStore.cost.toFixed(4)}
+          {Tr("Total cost in this session")} ${props.chatStore.cost.toFixed(4)}
         </p>
         <hr />
         <div className="box">
@@ -303,7 +354,7 @@ export default (props: {
             readOnly={true}
             {...props}
           />
-          <Number field="temperature" help="温度" readOnly={false} {...props} />
+          <Slicer field="temperature" help="温度" {...props} />
           <Number field="top_p" help="top_p" readOnly={false} {...props} />
           <Number
             field="presence_penalty"
@@ -329,7 +380,7 @@ export default (props: {
           />
           <div className="flex justify-between">
             <p className="m-2 p-2">
-              Accumulated cost in all sessions ${totalCost.toFixed(4)}
+              {Tr("Accumulated cost in all sessions")} ${totalCost.toFixed(4)}
             </p>
             <button
               className="p-2 m-2 rounded bg-emerald-500"
@@ -338,7 +389,7 @@ export default (props: {
                 setTotalCost(getTotalCost());
               }}
             >
-              Reset
+              {Tr("Reset")}
             </button>
           </div>
           <p className="flex justify-evenly">
@@ -361,14 +412,14 @@ export default (props: {
                 downloadAnchorNode.remove();
               }}
             >
-              Export
+              {Tr("Export")}
             </button>
             <button
               className="p-2 m-2 rounded bg-amber-500"
               onClick={() => {
-                const name = prompt("Give this template a name:");
+                const name = prompt(tr("Give this template a name:", langCode));
                 if (!name) {
-                  alert("No template name specified");
+                  alert(tr("No template name specified", langCode));
                   return;
                 }
                 const tmp: ChatStore = structuredClone(props.chatStore);
@@ -382,7 +433,7 @@ export default (props: {
                 props.setTemplates([...props.templates]);
               }}
             >
-              As template
+              {Tr("As template")}
             </button>
             <button
               className="p-2 m-2 rounded bg-amber-500"
@@ -401,14 +452,17 @@ export default (props: {
                 props.setTemplateAPIs([...props.templateAPIs]);
               }}
             >
-              As API Template
+              {Tr("As API Template")}
             </button>
             <button
               className="p-2 m-2 rounded bg-amber-500"
               onClick={() => {
                 if (
                   !confirm(
-                    "This will OVERWRITE the current chat history! Continue?"
+                    tr(
+                      "This will OVERWRITE the current chat history! Continue?",
+                      langCode
+                    )
                   )
                 )
                   return;
@@ -426,14 +480,14 @@ export default (props: {
                 const file = importFileRef.current.files[0];
                 console.log("file to import", file);
                 if (!file || file.type !== "application/json") {
-                  alert("Please select a json file");
+                  alert(tr("Please select a json file", langCode));
                   return;
                 }
                 const reader = new FileReader();
                 reader.onload = () => {
                   console.log("import content", reader.result);
                   if (!reader) {
-                    alert("Empty file");
+                    alert(tr("Empty file", langCode));
                     return;
                   }
                   try {
@@ -441,11 +495,16 @@ export default (props: {
                       reader.result as string
                     );
                     if (!newChatStore.chatgpt_api_web_version) {
-                      throw "This is not an exported chatgpt-api-web chatstore file. The key 'chatgpt_api_web_version' is missing!";
+                      throw tr(
+                        "This is not an exported chatgpt-api-web chatstore file. The key 'chatgpt_api_web_version' is missing!",
+                        langCode
+                      );
                     }
                     props.setChatStore({ ...newChatStore });
                   } catch (e) {
-                    alert(`Import error on parsing json: ${e}`);
+                    alert(
+                      tr(`Import error on parsing json:`, langCode) + `${e}`
+                    );
                   }
                 };
                 reader.readAsText(file);
@@ -453,7 +512,7 @@ export default (props: {
             />
           </p>
           <p className="text-center m-2 p-2">
-            chatgpt-api-web ChatStore Version{" "}
+            chatgpt-api-web ChatStore {Tr("Version")}{" "}
             {props.chatStore.chatgpt_api_web_version}
           </p>
         </div>
diff --git a/src/translate/index.tsx b/src/translate/index.tsx
new file mode 100644
index 0000000..b478ca8
--- /dev/null
+++ b/src/translate/index.tsx
@@ -0,0 +1,51 @@
+import { createContext } from "preact";
+import MAP_zh_CN from "./zh_CN";
+
+interface LangOption {
+  name: string;
+  langMap: Record<string, string>;
+  matches: string[];
+}
+
+const LANG_OPTIONS: Record<string, LangOption> = {
+  "en-US": {
+    name: "English",
+    langMap: {},
+    matches: ["en-US", "en"],
+  },
+  "zh-CN": {
+    name: "中文（简体）",
+    langMap: MAP_zh_CN,
+    matches: ["zh-CN", "zh"],
+  },
+};
+
+const langCodeContext = createContext("en-US");
+
+function tr(text: string, langCode: "en-US" | "zh-CN") {
+  const option = LANG_OPTIONS[langCode];
+  if (option === undefined) {
+    return text;
+  }
+  const langMap = LANG_OPTIONS[langCode].langMap;
+
+  const translatedText = langMap[text.toLowerCase()];
+  if (translatedText === undefined) {
+    return text;
+  }
+
+  return translatedText;
+}
+
+function Tr(text: string) {
+  return (
+    <langCodeContext.Consumer>
+      {/* @ts-ignore */}
+      {({ langCode }) => {
+        return tr(text, langCode);
+      }}
+    </langCodeContext.Consumer>
+  );
+}
+
+export { tr, Tr, LANG_OPTIONS, langCodeContext };
diff --git a/src/translate/zh_CN.ts b/src/translate/zh_CN.ts
new file mode 100644
index 0000000..123c68a
--- /dev/null
+++ b/src/translate/zh_CN.ts
@@ -0,0 +1,58 @@
+const LANG_MAP: Record<string, string> = {
+  settings: "设置",
+  model: "模型",
+  "copy setting link": "复制设置链接",
+  "are you sure to clear all history?": "确定要清除所有历史记录吗？",
+  "clear history": "清除历史记录",
+  new: "新",
+  del: "删",
+  cut: "遗忘",
+  "please click above to set": "请点击上方进行设置",
+  cost: "消费",
+  stream: "流式返回",
+  fetch: "一次获取",
+  "saved api templates": "已保存的 API 模板",
+  "saved prompt templates": "已保存的提示模板",
+  "no chat history here": "暂无历史对话记录",
+  "click above to change the settings of this chat":
+    "点击上方更改此对话的参数（请勿泄漏）",
+  "click the NEW to create a new chat": "点击左上角 NEW 新建对话",
+  "all chat history and settings are stored in the local browser":
+    "所有历史对话与参数储存在浏览器本地",
+  "documents and source code are avaliable here":
+    "详细文档与源代码可在此处获取",
+  "generating...": "生成中，请保持网络稳定...",
+  "re-generate": "重新生成",
+  completion: "补全",
+  "generated by": "生成模型: ",
+  "info: chat history is too long, forget messages":
+    "提示：对话历史过长，遗忘消息数量",
+  "warning: current chatstore version": "警告：当前会话版本",
+  retry: "重试",
+  send: "发送",
+  assistant: "AI消息",
+  user: "用户消息",
+  close: "关闭",
+  "message copied to clipboard": "消息已复制到剪贴板",
+  "total cost in this session": "本次会话总消费",
+  "accumulated cost in all sessions": "所有会话总消费",
+  export: "导出",
+  "give this template a name:": "给此模板命名：",
+  "no template name specified": "未指定模板名称",
+  "as template": "保存为会话模板",
+  "as api template": "保存为 API 模板",
+  "this will overwrite the current chat history! continue?":
+    "此操作将覆盖当前会话历史！继续？",
+  "please select a json file": "请选择一个 JSON 文件",
+  "empty file": "警告: 空文件",
+  "this is not an exported chatgpt-api-web chatstore file. the key 'chatgpt_api_web_version' is missing!":
+    "此文件不是 chatgpt-api-web 导出的会话文件，缺少 chatgpt_api_web_version 键值！",
+  "import error on parsing json": "JSON 解析错误",
+  version: "版本",
+  "copied link:": "已复制链接：",
+  reset: "重置",
+  example: "示例",
+  render: "渲染",
+};
+
+export default LANG_MAP;