diff --git a/components/contentMenu.tsx b/components/contentMenu.tsx
index 37b02c8..6bc52d5 100644
--- a/components/contentMenu.tsx
+++ b/components/contentMenu.tsx
@@ -3,18 +3,23 @@ interface ContentItem {
     color?: string;
 }
 
-interface TextContentItem extends ContentItem {
+interface TextCI extends ContentItem {
     type: 'text';
     text: string;
     onClick: React.MouseEventHandler;
 }
 
-interface SeparatorContentItem extends ContentItem {
+interface SeparatorCI extends ContentItem {
     type: 'separator';
     height: number;
 }
 
-type Content = TextContentItem | SeparatorContentItem;
+interface TitleCI extends ContentItem {
+    type: 'title';
+    text: string;
+}
+
+type Content = TextCI | SeparatorCI | TitleCI;
 
 export interface ContentMenuSet {
     x: number;
@@ -27,11 +32,12 @@ export default function ContentMenu({ set }: { set: ContentMenuSet }) {
     let array = set.content.map((v, i) => {
         const { color = '#000' } = v;
         if (v.type === 'text') return (
-            <div style={{ color }} onClick={v.onClick} key={i}>
+            <div className='text' style={{ color }} onClick={v.onClick} key={i}>
                 <p>{v.text}</p>
             </div>
         );
-        if (v.type === 'separator') return <hr style={{ color, height: v.height }} key={i} />;
+        if (v.type === 'separator') return (<div className='separator' style={{ backgroundColor: color, height: v.height }} key={i} />);
+        if (v.type === 'title') return (<p style={{ color }} key={i}>{v.text} </p>);
     });
     return (<>
         {set.display && (<div id='contentMenu' style={{ left: set.x, top: set.y }}>{array}</div>)}
diff --git a/components/i18n/config/chat.ts b/components/i18n/config/chat.ts
index 3a9c98b..ffd7445 100644
--- a/components/i18n/config/chat.ts
+++ b/components/i18n/config/chat.ts
@@ -103,5 +103,21 @@ const chat = {
         'zh-CN': '编辑',
         'zh-TW': '編輯',
     },
+    idConfirmTitle: {
+        'zh-CN': '确定删除',
+        'zh-TW': '確定刪除',
+    },
+    idConfirmInfo: {
+        'zh-CN': '确定删除与$0的聊天吗',
+        'zh-TW': '確定刪除於$0的聊天嗎',
+    },
+    confirm: {
+        'zh-CN': '确定',
+        'zh-TW': '確定',
+    },
+    cancel: {
+        'zh-CN': '取消',
+        'zh-TW': '取消',
+    },
 }
 export default chat;
\ No newline at end of file
diff --git a/components/i18n/index.ts b/components/i18n/index.ts
index 0fda5f4..8ad5386 100644
--- a/components/i18n/index.ts
+++ b/components/i18n/index.ts
@@ -1,5 +1,5 @@
 import { useEffect, useState } from "react";
-import { useSetting } from "../setting";
+import { getSettingFun } from "../setting";
 
 export type Locales = 'zh-CN' | 'zh-TW';
 
@@ -13,7 +13,7 @@ export function fillBlank(i18n: string, ...fills: (string | undefined)[]): strin
 
 export function useLocale<T extends i18nContents, K extends keyof T>(i18n: T) {
     const [lo, setLo] = useState('');
-    const { getSetting } = useSetting();
+    const { getSetting } = getSettingFun();
     useEffect(() => setLo(getSetting().locale || window.navigator.language), []);
     function locale(key: K, loc?: string) {
         return (i18n as Record<K, Record<string, string>>)[key][loc || lo];
diff --git a/components/main.tsx b/components/main.tsx
index b04922a..a138e97 100644
--- a/components/main.tsx
+++ b/components/main.tsx
@@ -1,6 +1,6 @@
 //Components
 import Link from 'next/link';
-import { SettingForm, useSetting } from '@/components/setting';
+import { SettingForm, getSettingFun } from '@/components/setting';
 
 //Styles
 import styles from '@/styles/MainNode.module.scss';
@@ -9,9 +9,9 @@ import styles from '@/styles/MainNode.module.scss';
 import { useRouter } from 'next/router';
 import { useEffect, useState } from 'react';
 import Window, { AllWindow, AllWindows, getWindowFun } from './window';
-import { Locales, i18nContents, useLocale } from './i18n';
+import { Locales, useLocale } from './i18n';
 import main from './i18n/config/main';
-import { SettingState, SettingArg } from '@/components/setting';
+import { Settings, SettingArg } from '@/components/setting';
 
 function MomoTalkIcon() {
     return (
@@ -37,7 +37,7 @@ function MTBarLink({ type }: { type: string }) {
     );
 }
 
-function MTStart({ animation }: { animation: SettingState['animation'] }) {
+function MTStart() {
     const [ani, setAni] = useState<'true' | 'false'>('false');
     useEffect(() => {
         const { animation } = window.sessionStorage;
@@ -48,6 +48,12 @@ function MTStart({ animation }: { animation: SettingState['animation'] }) {
         }
     }, []);
 
+    const [animation, setAnimation] = useState<Settings['animation']>();
+    const { getSetting } = getSettingFun();
+    useEffect(() => {
+        setAnimation(getSetting().animation);
+    }, []);
+
     const userAni = (() => {
         if (animation === 'none' || animation === undefined) return 'false';
         else if (animation === 'first') return ani;
@@ -69,18 +75,13 @@ export default function MainNode({ children, onBodyClick }: {
 }) {
     const { lo, locale, localeType } = useLocale(main);
 
-    const { setting, setSetting } = useSetting({
-        locale: lo,
-        animation: 'first',
-        fileName: 'untitled',
-    });
+    const { setSetting, windowOnload } = getSettingFun();
+    useEffect(windowOnload, []);
 
-    const {
-        allWindow,
-        addNewWindow,
-        openWindow,
-        closeWindow,
-    } = getWindowFun(useState<AllWindow>({ all: [], component: {} }));
+    const { allWindow, addNewWindow, openWindow, closeWindow } = getWindowFun(useState<AllWindow>({
+        all: [],
+        component: {},
+    }));
 
     const Setting = new Window<SettingArg>('Setting');
 
@@ -116,7 +117,7 @@ export default function MainNode({ children, onBodyClick }: {
                         }}
                         done={locale('done')}
                         onSubmit={data => {
-                            setSetting(data as SettingState);
+                            setSetting(data as Settings);
                             close();
                         }}
                     />
@@ -130,7 +131,7 @@ export default function MainNode({ children, onBodyClick }: {
     return (
         <div id={styles.main} onClick={onBodyClick}>
             <AllWindows zIndex={1099} allWindow={allWindow} />
-            <MTStart animation={setting.animation} />
+            <MTStart />
             <div id={styles.MTBackground}>
                 <div id={styles.MTBar}>
                     <div id={styles.left}>
diff --git a/components/setting.tsx b/components/setting.tsx
index 7d216a0..76e7cb5 100644
--- a/components/setting.tsx
+++ b/components/setting.tsx
@@ -77,32 +77,28 @@ export function SettingForm<N extends string>({ option, done, onSubmit }: Settin
     )
 }
 
-export interface SettingState {
+export interface Settings {
     locale?: string;
     animation?: 'none' | 'first' | 'every';
     fileName?: string;
 }
 
 export interface SettingArg {
-    setting: SettingState;
-    setSetting: SetStateFun<SettingState>;
+    setting: Settings;
+    setSetting: SetStateFun<Settings>;
 }
 
-export function useSetting(state?: SettingState) {
-    const [setting, setSetting] = getClassState(
-        useState<SettingState>(state || {}),
-        newSet => {
-            window.localStorage.set = JSON.stringify(newSet)
-        }
-    );
-    useEffect(() => {
-        let setting: string = window.localStorage.set;
-        if (setting !== undefined) {
-            setSetting(JSON.parse(setting));
-        }
-    }, []);
-    function getSetting(): SettingState {
-        return JSON.parse(window.localStorage.set);
+export function getSettingFun(defaultSet?: Settings) {
+    function getSetting(): Settings {
+        return JSON.parse(window.localStorage.set as string);
     }
-    return { setting, setSetting, getSetting };
+    function setSetting(newSet: Partial<Settings>, first?: boolean): void {
+        const preSet = first ? {} : getSetting();
+        //console.log({ preSet, newSet, localStorage: JSON.parse(localStorage.set) });
+        window.localStorage.set = JSON.stringify({ ...preSet, ...newSet });
+    }
+    function windowOnload() {
+        if (window.localStorage.set === undefined && defaultSet !== undefined) setSetting(defaultSet, true);
+    }
+    return { getSetting, setSetting, windowOnload };
 }
\ No newline at end of file
diff --git a/components/students/index.tsx b/components/students/index.tsx
index a9b7fe1..6f412d8 100644
--- a/components/students/index.tsx
+++ b/components/students/index.tsx
@@ -3,16 +3,25 @@ import { getStudentInfo } from './studentsMethods';
 import ImgCol from '../imgCol';
 
 interface StudentProps {
-    id: number,
-    allInfo: studentsJson,
-    onClick: React.MouseEventHandler<HTMLDivElement>,
-    select: boolean,
+    id: number;
+    allInfo: studentsJson;
+    onClick: React.MouseEventHandler<HTMLDivElement>;
+    select: boolean;
+    onContentMenu?: React.MouseEventHandler<HTMLDivElement>;
 }
 
-export default function Student({ id, allInfo, onClick, select }: StudentProps) {
+export default function Student({ id, allInfo, onClick, select, onContentMenu }: StudentProps) {
     const info = getStudentInfo(allInfo, id);
     return (
-        <div onClick={onClick} className={select ? 'select' : ''} title={`id:${id}`}>
+        <div
+            onClick={onClick}
+            onContextMenu={e => {
+                e.preventDefault();
+                onContentMenu?.(e);
+            }}
+            className={select ? 'select' : ''}
+            title={`id:${id}`}
+        >
             <ImgCol
                 style='student'
                 size={60}
diff --git a/pages/chat.tsx b/pages/chat.tsx
index 0ba5ee2..a410192 100644
--- a/pages/chat.tsx
+++ b/pages/chat.tsx
@@ -22,7 +22,7 @@ import Window, { AllWindows, AllWindow, getWindowFun } from '@/components/window
 import { SetStateFun, getClassState } from '@/components/extraReact';
 import { downloadFile, uploadFile } from '@/components/loadFile';
 import { ContentMenuSet } from '@/components/contentMenu';
-import { SettingState, useSetting } from '@/components/setting';
+import { getSettingFun } from '@/components/setting';
 
 const StatesContext = createContext<{
     allWindow: AllWindow;
@@ -178,7 +178,7 @@ function Loader({ type }: LoaderState) {
         setChatState,
     } = useContext(StatesContext);
     const locale = useContext(localeContext);
-    const { setSetting, getSetting } = useSetting();
+    const { setSetting, getSetting } = getSettingFun();
 
     return (
         <img
@@ -264,11 +264,15 @@ interface SendMessageArg {
     i?: number;
 }
 
+interface IdConfirmArg {
+    student: number;
+    textInfo: string;
+    studentsList?: ListState['studentsList'];
+}
+
 export default function Chat() {
     const { lo, locale } = useLocale(chat);
 
-    //const { getSetting } = useSetting();
-
     const [listState, setListState] = getClassState(useState<ListState>({
         student: 0,
         studentsList: [10000, 10045],
@@ -327,6 +331,9 @@ export default function Chat() {
     const sendMessageInputRef = useRef('');
     const SendMessage = new Window<SendMessageArg>('SendMessage');
 
+    //Confirm
+    const IdConfirm = new Window<IdConfirmArg>('IdConfirm');
+
     useEffect(() => {
         addNewWindow(IdPrompt, (zIndex, id, display, { studentsList, type }, all) => (
             <IdPrompt.Component
@@ -429,6 +436,34 @@ export default function Chat() {
                 display={display}
             />
         ));
+        addNewWindow(IdConfirm, (zIndex, id, display, { student, textInfo, studentsList }, all) => (
+            <IdConfirm.Component
+                title={locale('idConfirmTitle')}
+                closeWindow={() => closeWindow(all, id)}
+                element={close => (<>
+                    <p>{fillBlank(locale('idConfirmInfo'), textInfo)}</p>
+                    <div>
+                        <button
+                            onClick={() => {
+                                if (!studentsList?.includes(student)) {
+                                    openWindow(all, TextAlert, { title: locale('error'), elem: locale('withoutStudent') });
+                                }
+                                else {
+                                    const i = studentsList.indexOf(student);
+                                    studentsList.splice(i, 1);
+                                    window.localStorage.studentsList = studentsList?.join();
+                                    setListState({ studentsList });
+                                    close();
+                                }
+                            }}
+                        >{locale('confirm')}</button>
+                        <button className='cancel' onClick={() => close()}>{locale('cancel')}</button>
+                    </div>
+                </>)}
+                zIndex={zIndex}
+                display={display}
+            />
+        ));
     }, [lo]);
 
     useEffect(() => {
@@ -463,18 +498,14 @@ export default function Chat() {
                 <div id={styles.title}>
                     <p id={styles.left}>{locale('student')}({listState.studentsList?.length})</p>
                     <div id={styles.right}>
-                        <p onClick={_ => {
-                            openWindow(allWindow.all, IdPrompt, {
-                                studentsList: listState.studentsList,
-                                type: '+'
-                            });
-                        }}>+</p>
-                        <p onClick={_ => {
-                            openWindow(allWindow.all, IdPrompt, {
-                                studentsList: listState.studentsList,
-                                type: '-'
-                            });
-                        }}>-</p>
+                        {(['+', '-'] as ('+' | '-')[]).map(v => (
+                            <p title={locale(v) + locale('student') + ''} key={v} onClick={_ => {
+                                openWindow(allWindow.all, IdPrompt, {
+                                    studentsList: listState.studentsList,
+                                    type: v,
+                                });
+                            }}>{v}</p>
+                        ))}
                     </div>
                 </div>
                 <div style={{ height: 70 }} />
@@ -487,17 +518,37 @@ export default function Chat() {
                         <Repeat
                             variable={0}
                             repeat={listState.studentsList?.length}
-                            func={v => v + 1}
-                            components={v => {
+                            func={i => i + 1}
+                            components={i => {
                                 if (!listState.studentsJson || !listState.studentsList) return;
-                                const id = listState.studentsList[v];
+                                const id = listState.studentsList[i];
                                 return (
                                     <Student
                                         id={id}
                                         allInfo={listState.studentsJson.data}
-                                        key={id}
                                         onClick={() => setListState({ student: id })}
                                         select={listState.student === id}
+                                        onContentMenu={e => {
+                                            const info = getStudentInfo(listState.studentsJson?.data as studentsJson, id);
+                                            setContentMenu({
+                                                x: e.clientX,
+                                                y: e.clientY,
+                                                content: [
+                                                    { type: 'title', text: `${info.schale?.Name} id: ${id}` },
+                                                    { type: 'separator', color: '#ccc', height: 1 },
+                                                    {
+                                                        type: 'text', text: locale('delete'), onClick() {
+                                                            openWindow(allWindow.all, IdConfirm, {
+                                                                student: id,
+                                                                textInfo: info.schale?.Name as string,
+                                                                studentsList: listState.studentsList,
+                                                            });
+                                                        }
+                                                    },
+                                                ],
+                                                display: true,
+                                            });
+                                        }}
                                     />
                                 );
                             }}
diff --git a/styles/globals.scss b/styles/globals.scss
index 6b647a5..ca02585 100644
--- a/styles/globals.scss
+++ b/styles/globals.scss
@@ -187,6 +187,11 @@ div.window {
         border-radius: 5px;
         margin: 5px;
         height: 25px;
+
+        &.cancel {
+          background-color: #bbb;
+          color: #fff;
+        }
       }
 
       p {
@@ -212,13 +217,14 @@ div.window {
 div#contentMenu {
   backdrop-filter: blur(30px);
   position: absolute;
-  width: 60px;
+  width: max-content;
+  min-width: 60px;
   padding: 5px;
   border-radius: 5px;
   box-shadow: rgb(0 0 0 / 30%) 0 0 20px;
   z-index: 10000;
 
-  > div {
+  > div.text {
     padding: 1px;
     border-radius: 5px;
     transition-duration: 0.2s;
@@ -233,4 +239,14 @@ div#contentMenu {
       font-size: 14px;
     }
   }
+
+  > div.separator {
+    margin: 5px;
+  }
+
+  > p {
+    user-select: none;
+    margin: 0 5px;
+    font-size: 14px;
+  }
 }