diff --git a/frontend/src/_locales/ja/main.json b/frontend/src/_locales/ja/main.json
index 549cf39..f57494d 100644
--- a/frontend/src/_locales/ja/main.json
+++ b/frontend/src/_locales/ja/main.json
@@ -338,5 +338,8 @@
   "If you don't know what it is, keep it default.": "何であるかわからない場合はデフォルトのままにしてください。",
   "Failed to find the base model, please try to change your base model.": "ベースモデルが見つかりませんでした、ベースモデルを変更してみてください。",
   "Markdown Renderer": "Markdownレンダリング",
-  "Load Conversation": "会話を読み込む"
+  "Load Conversation": "会話を読み込む",
+  "The latest X messages will be sent to the server. If you are using the RWKV-Runner server, please use the default value because RWKV-Runner has built-in state cache management which only calculates increments. Sending all messages will have lower cost. If you are using ChatGPT, adjust this value according to your needs to reduce ChatGPT expenses.": "最新のX件のメッセージがサーバーに送信されます。RWKV-Runnerサーバーを使用している場合は、デフォルト値を使用してください。RWKV-Runnerには組み込みの状態キャッシュ管理があり、増分のみを計算します。すべてのメッセージを送信すると、コストが低くなります。ChatGPTを使用している場合は、ChatGPTの費用を削減するために必要に応じてこの値を調整してください。",
+  "History Message Number": "履歴メッセージ数",
+  "Send All Message": "すべてのメッセージを送信"
 }
\ No newline at end of file
diff --git a/frontend/src/_locales/zh-hans/main.json b/frontend/src/_locales/zh-hans/main.json
index fc5a6eb..0008e2a 100644
--- a/frontend/src/_locales/zh-hans/main.json
+++ b/frontend/src/_locales/zh-hans/main.json
@@ -338,5 +338,8 @@
   "If you don't know what it is, keep it default.": "如果你不知道这是什么，保持默认",
   "Failed to find the base model, please try to change your base model.": "未找到基底模型，请尝试更换基底模型",
   "Markdown Renderer": "Markdown渲染",
-  "Load Conversation": "读取对话"
+  "Load Conversation": "读取对话",
+  "The latest X messages will be sent to the server. If you are using the RWKV-Runner server, please use the default value because RWKV-Runner has built-in state cache management which only calculates increments. Sending all messages will have lower cost. If you are using ChatGPT, adjust this value according to your needs to reduce ChatGPT expenses.": "最近的X条消息会发送至服务器. 如果你正在使用RWKV-Runner服务器, 请使用默认值, 因为RWKV-Runner内置了state缓存管理, 只计算增量, 发送所有消息将具有更低的成本. 如果你正在使用ChatGPT, 则根据你的需要调整此值, 这可以降低ChatGPT的费用",
+  "History Message Number": "历史消息数量",
+  "Send All Message": "发送所有消息"
 }
\ No newline at end of file
diff --git a/frontend/src/pages/Chat.tsx b/frontend/src/pages/Chat.tsx
index 68bf8dd..3cf8e13 100644
--- a/frontend/src/pages/Chat.tsx
+++ b/frontend/src/pages/Chat.tsx
@@ -231,7 +231,7 @@ const SidePanel: FC = observer(() => {
         onClick={() => commonStore.setSidePanelCollapsed(true)}
       />
     </div>
-    <div className="flex flex-col gap-1 overflow-x-hidden overflow-y-auto p-1">
+    <div className="flex flex-col gap-1 overflow-x-hidden overflow-y-auto p-0.5">
       <Labeled flex breakline label={t('Max Response Token')}
         desc={t('By default, the maximum number of tokens that can be answered in a single response, it can be changed by the user by specifying API parameters.')}
         content={
@@ -299,6 +299,19 @@ const SidePanel: FC = observer(() => {
               });
             }} />
         } />
+      <Labeled flex breakline
+        label={t('History Message Number') + (params.historyN === 0 ? ` (${t('Default')})` : '')}
+        desc={params.historyN === 0 ? t('Send All Message') : t('The latest X messages will be sent to the server. If you are using the RWKV-Runner server, please use the default value because RWKV-Runner has built-in state cache management which only calculates increments. Sending all messages will have lower cost. If you are using ChatGPT, adjust this value according to your needs to reduce ChatGPT expenses.')
+        .replace('X', String(params.historyN))}
+        content={
+          <ValuedSlider value={params.historyN} min={0} max={20}
+            step={1} input
+            onChange={(e, data) => {
+              commonStore.setChatParams({
+                historyN: data.value
+              });
+            }} />
+        } />
     </div>
     <div className="grow" />
     <Labeled flex spaceBetween
@@ -518,7 +531,7 @@ const ChatPanel: FC = observer(() => {
           Authorization: `Bearer ${commonStore.settings.apiKey}`
         },
         body: JSON.stringify({
-          messages,
+          messages: messages.slice(-commonStore.chatParams.historyN),
           stream: true,
           model: commonStore.settings.apiChatModelName, // 'gpt-3.5-turbo'
           temperature: commonStore.chatParams.temperature,
@@ -594,7 +607,7 @@ const ChatPanel: FC = observer(() => {
           style={{ zIndex: 1 }}
           icon={commonStore.sidePanelCollapsed ? <TextAlignJustify24Regular /> : <TextAlignJustifyRotate9024Regular />}
           onClick={() => commonStore.setSidePanelCollapsed(!commonStore.sidePanelCollapsed)} />
-        <div ref={bodyRef} className="grow overflow-y-scroll overflow-x-hidden pr-2">
+        <div ref={bodyRef} className="grow overflow-y-auto overflow-x-hidden pr-2">
           {commonStore.conversationOrder.map(uuid =>
             <ChatMessageItem key={uuid} uuid={uuid} onSubmit={onSubmit} />
           )}
diff --git a/frontend/src/stores/commonStore.ts b/frontend/src/stores/commonStore.ts
index 4110c4d..a6d973b 100644
--- a/frontend/src/stores/commonStore.ts
+++ b/frontend/src/stores/commonStore.ts
@@ -3,7 +3,12 @@ import { getUserLanguage, isSystemLightMode, saveCache, saveConfigs, savePresets
 import { WindowSetDarkTheme, WindowSetLightTheme } from '../../wailsjs/runtime';
 import manifest from '../../../manifest.json';
 import i18n from 'i18next';
-import { defaultCompositionPrompt, defaultModelConfigs, defaultModelConfigsMac } from '../pages/defaultConfigs';
+import {
+  defaultCompositionPrompt,
+  defaultModelConfigs,
+  defaultModelConfigsMac,
+  defaultPenaltyDecay
+} from '../pages/defaultConfigs';
 import { ChartData } from 'chart.js';
 import { Preset } from '../types/presets';
 import { AboutContent } from '../types/about';
@@ -80,7 +85,8 @@ class CommonStore {
     topP: 0.3,
     presencePenalty: 0,
     frequencyPenalty: 1,
-    penaltyDecay: 0.996,
+    penaltyDecay: defaultPenaltyDecay,
+    historyN: 0,
     markdown: true
   };
   sidePanelCollapsed: boolean | 'auto' = 'auto';
diff --git a/frontend/src/types/chat.ts b/frontend/src/types/chat.ts
index e2fdb53..74e211b 100644
--- a/frontend/src/types/chat.ts
+++ b/frontend/src/types/chat.ts
@@ -35,5 +35,6 @@ export type Attachment = {
   content: string;
 }
 export type ChatParams = Omit<ApiParameters, 'apiPort'> & {
-  markdown: boolean
+  historyN: number;
+  markdown: boolean;
 }
\ No newline at end of file