diff --git a/Project/__pycache__/main.cpython-311.pyc b/Project/__pycache__/main.cpython-311.pyc
new file mode 100644
index 0000000..5e510a5
Binary files /dev/null and b/Project/__pycache__/main.cpython-311.pyc differ
diff --git a/Project/db.sql b/Project/db.sql
new file mode 100644
index 0000000..3a0b4ff
--- /dev/null
+++ b/Project/db.sql
@@ -0,0 +1,10 @@
+DROP TABLE IF EXISTS passengers;
+
+CREATE TABLE passengers (
+    ID BIGINT PRIMARY KEY,
+    `Name` VARCHAR (255) NOT NULL,
+    Phone_number BIGINT UNIQUE NOT NULL,
+    `Password` VARCHAR (255) NOT NULL,
+    CHECK (ID REGEXP '^\\d{18}$'),
+    CHECK (Phone_number REGEXP '^\\d{11}$')
+);
\ No newline at end of file
diff --git a/Project/init_db.py b/Project/init_db.py
new file mode 100644
index 0000000..1957f23
--- /dev/null
+++ b/Project/init_db.py
@@ -0,0 +1,17 @@
+import pymysql
+
+db = pymysql.connect(
+    host='localhost', user='kejingfan', 
+    password='KJF2811879', database='TESTDB'
+)
+
+cursor = db.cursor()
+
+with open('db.sql', 'r') as f:
+    sql_commands = f.read().split(';')
+    for command in sql_commands:
+        if command.strip():  # 确保不执行空命令
+            cursor.execute(command)
+
+db.close()
+
diff --git a/Project/main.py b/Project/main.py
new file mode 100644
index 0000000..f2677d9
--- /dev/null
+++ b/Project/main.py
@@ -0,0 +1,179 @@
+from flask import Flask, render_template, request, flash, redirect, url_for
+import pymysql
+from pymysql.cursors import Cursor
+import os
+from typing import Dict
+
+
+app  = Flask(__name__)
+app.secret_key = os.environ.get('SECRET_KEY', 'OPTIONALSECRETKEY')
+
+
+def get_db():
+    return pymysql.connect(
+        host='localhost', user='kejingfan', 
+        password='KJF2811879', database='TESTDB'
+    )
+
+
+@app.route("/")
+def index():
+    return render_template("index.html")
+
+
+@app.route("/signup.html", methods=('GET', 'POST'))
+def signup():
+    if request.method == 'GET':
+        return render_template('signup.html')
+    
+    if request.method == 'POST':
+        id = request.form['cardCode']
+        name = request.form['name']
+        phone_number = request.form['mobileNo']
+        password = request.form['encryptedPassword']
+
+        db = get_db()
+        cursor = db.cursor()
+
+        # 检查已有用户
+        sql = """
+        SELECT COUNT(*) FROM passengers \
+        WHERE ID = %s;
+        """
+        try:
+            cursor.execute(sql, (id,))
+            id_exist = cursor.fetchall()[0][0]
+        except Exception as e:
+            flash("数据库异常，查询失败")
+            print(e)
+            return redirect(url_for('signup'))
+        if (id_exist != 0):
+            flash("您已注册过，请勿重复注册")
+            db.close()
+            return redirect(url_for('index'))
+
+        # 插入
+        sql = '''
+        INSERT INTO passengers (ID, `Name`, Phone_number, `Password`) \
+        VALUES (%s, %s, %s, %s); \
+        '''
+        try:
+            cursor.execute(sql, (id, name, phone_number, password))
+            db.commit()
+            flash("注册成功")
+        except Exception as e:
+            db.rollback()
+            print(e)
+            flash("数据库异常，注册失败")
+        db.close()
+        return redirect(url_for('index'))
+
+
+def verify_user(cursor:Cursor, id:str, password:str) -> str:
+    # 检查已有用户
+        sql = """
+        SELECT COUNT(*) FROM passengers \
+        WHERE ID = %s;
+        """
+        try:
+            cursor.execute(sql, (id,))
+            id_exist = cursor.fetchall()[0][0]
+        except Exception as e:
+            flash("数据库异常，查询失败")
+            print(e)
+            return redirect(url_for('signup'))
+        if (id_exist == 0):
+            return "NO_USER"
+        
+        # 检查密码
+        sql = """
+        SELECT `Password` FROM passengers \
+        WHERE ID = %s;
+        """
+        try:
+            cursor.execute(sql, (id,))
+            record_password = cursor.fetchall()[0][0]
+        except Exception as e:
+            flash("数据库异常，查询失败")
+            print(e)
+            return redirect(url_for('modify'))
+        if (record_password != password):
+            return "WRONG_PASSWORD"
+        
+        return "USER_VERIFIED"
+
+
+class ModifyInfo:
+    def __init__(self, form:Dict[str, str]):
+        self.id = form['cardCode']
+        modifyType = form['modifyType']
+        self.new_password = form['encryptedNewPassword']
+        self.phone_number = form['mobileNo']
+        modifyType2command = {
+            '1':'delete account',
+            '2':'modify Password',
+            '3':'modify Phone_Number'
+        }
+        self.sql_dict = {
+            'delete account': 'DELETE FROM passengers WHERE ID = %s;',
+            'modify Password': 'UPDATE passengers SET `Password` = %s WHERE ID = %s;',
+            'modify Phone_Number': 'UPDATE passengers SET Phone_number = %s WHERE ID = %s;'
+        }
+        self.sql_args_dict = {
+            'delete account': (self.id,),
+            'modify Password': (self.new_password, self.id),
+            'modify Phone_Number': (self.phone_number, self.id)
+        }
+        self.ok_message_dict = {
+            'delete account': "删除账户成功",
+            'modify Password': "修改密码成功",
+            'modify Phone_Number': "修改手机号成功"
+        }
+        self.fail_message_dict = {
+            'delete account': "数据库异常，删除账户失败",
+            'modify Password': "数据库异常，修改密码失败",
+            'modify Phone_Number': "数据库异常，修改手机号失败"
+        }
+        self.command = modifyType2command[modifyType]
+    def get_sql(self):
+        return self.sql_dict[self.command]
+    def get_args(self):
+        return self.sql_args_dict[self.command]
+    def get_ok_message(self):
+        return self.ok_message_dict[self.command]
+    def get_fail_message(self):
+        return self.fail_message_dict[self.command]
+
+
+@app.route("/modify.html", methods=('GET', 'POST'))
+def modify():
+    if request.method == 'GET':
+        return render_template('modify.html')
+    
+    if request.method == 'POST':
+        id = request.form['cardCode']
+        password = request.form['encryptedPassword']
+        db = get_db()
+        cursor = db.cursor()
+
+        verify_info = verify_user(cursor, id, password)
+        if (verify_info == "NO_USER"):
+            flash("您未注册过，无法修改账号")
+            db.close()
+            return redirect(url_for('signup'))
+        elif (verify_info == "WRONG_PASSWORD"):
+            flash("密码错误")
+            db.close()
+            return redirect(url_for('modify'))
+
+        modifyInfo = ModifyInfo(request.form)
+        try:
+            cursor.execute(modifyInfo.get_sql(), modifyInfo.get_args())
+            db.commit()
+            flash(modifyInfo.get_ok_message())
+        except Exception as e:
+            db.rollback()
+            print(e)
+            flash(modifyInfo.get_fail_message())
+        db.close()
+        return redirect(url_for('index'))
\ No newline at end of file
diff --git a/Project/requirements.txt b/Project/requirements.txt
new file mode 100644
index 0000000..e79ebbc
--- /dev/null
+++ b/Project/requirements.txt
@@ -0,0 +1,12 @@
+blinker==1.8.1
+cffi==1.16.0
+click==8.1.7
+configparser==7.0.0
+cryptography==42.0.6
+Flask==3.0.3
+itsdangerous==2.2.0
+Jinja2==3.1.3
+MarkupSafe==2.1.5
+pycparser==2.22
+PyMySQL==1.1.0
+Werkzeug==3.0.2
diff --git a/Project/run.sh b/Project/run.sh
new file mode 100644
index 0000000..dc861d9
--- /dev/null
+++ b/Project/run.sh
@@ -0,0 +1 @@
+SECRET_KEY='ILOVEDATABASETECH' FLASK_APP=main FLASK_ENV=development flask run
\ No newline at end of file
diff --git a/Project/static/css/style.css b/Project/static/css/style.css
new file mode 100644
index 0000000..34abe50
--- /dev/null
+++ b/Project/static/css/style.css
@@ -0,0 +1,9 @@
+/* h1, ul, li, a, body {
+    margin: 0;
+    padding: 0;
+    text-decoration: none;
+} */
+
+li {
+    list-style: none;
+}
\ No newline at end of file
diff --git a/Project/static/js/checkInfo.js b/Project/static/js/checkInfo.js
new file mode 100644
index 0000000..641c012
--- /dev/null
+++ b/Project/static/js/checkInfo.js
@@ -0,0 +1,51 @@
+var checkInfo = {}
+
+checkInfo.checkCardCode = function() {
+    let cardCode = document.getElementById('cardCode').value
+    let regexCardCode = /^([1-6][1-9]|50)\d{4}(18|19|20)\d{2}((0[1-9])|10|11|12)(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$/
+    if(!regexCardCode.test(cardCode)) {
+        alert('身份证号格式有误')
+        return false
+    }
+    return true
+}
+
+checkInfo.checkMobileNo = function() {
+    let mobileNo = document.getElementById('mobileNo').value
+    let regexMobileNo = /^1[3-9]\d{9}$/
+    if (!regexMobileNo.test(mobileNo)) {
+        alert('手机号格式有误')
+        return false
+    }
+    return true
+}
+
+checkInfo.checkPassword = function() {
+    let password = document.getElementById('password')
+    let regexPassword = /^[A-Za-z0-9\W_]{6,20}$/
+    if (!regexPassword.test(password.value)) {
+        alert("密码须为长度为6-20位字母、数字或符号")
+        return false
+    }
+    let confirmPassword = document.getElementById('confirmPassword')
+    if (password.value !== confirmPassword.value) {
+        alert("两次输入的密码不一致")
+        return false
+    }
+    return true
+}
+
+checkInfo.checkNewPassword = function() {
+    let password = document.getElementById('newPassword')
+    let regexPassword = /^[A-Za-z0-9\W_]{6,20}$/
+    if (!regexPassword.test(password.value)) {
+        alert("密码须为长度为6-20位字母、数字或符号")
+        return false
+    }
+    let confirmPassword = document.getElementById('confirmNewPassword')
+    if (password.value !== confirmPassword.value) {
+        alert("两次输入的密码不一致")
+        return false
+    }
+    return true
+}
\ No newline at end of file
diff --git a/Project/static/js/modify.js b/Project/static/js/modify.js
new file mode 100644
index 0000000..084e9f4
--- /dev/null
+++ b/Project/static/js/modify.js
@@ -0,0 +1,28 @@
+var modify = {}
+
+modify.showModifyPassword = function() {
+    let modifyType = document.getElementById('modifyType').value
+    let info = {
+        modifyPasswordLis: document.getElementsByClassName('modifyPassword'),
+        modifymobileNoLis: document.getElementsByClassName('modifymobileNo'),
+    }
+
+    // 遍历隐藏所有元素
+    for (let key in info) {
+        let elements = info[key];
+        for (let item of elements) {
+            item.style.display = 'none'; // 确保所有相关元素被隐藏
+        }
+    }
+
+    // 根据 modifyType 显示相关元素
+    if (modifyType === "2") {
+        for (let item of info.modifyPasswordLis) {
+            item.style.display = 'block';
+        }
+    } else if (modifyType === "3") {
+        for (let item of info.modifymobileNoLis) {
+            item.style.display = 'block';
+        }
+    }
+}
\ No newline at end of file
diff --git a/Project/templates/index.html b/Project/templates/index.html
new file mode 100644
index 0000000..a08a5b8
--- /dev/null
+++ b/Project/templates/index.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <title>我的12306官网</title>
+    <script>
+        window.onload = function() {
+            {% with messages = get_flashed_messages() %}
+            {% if messages %}
+                var message = "";
+                {% for msg in messages %}
+                    message += "{{ msg }}\n";
+                {% endfor %}
+                alert(message);
+            {% endif %}
+            {% endwith %}
+        };
+    </script>
+</head>
+<body>
+    <h1>Coming soon~</h1>
+    <div><a href="signup.html">点击跳转注册</a></div>
+    <div><a href="modify.html">点击跳转修改账号</a></div>
+</body>
+</html>
\ No newline at end of file
diff --git a/Project/templates/modify.html b/Project/templates/modify.html
new file mode 100644
index 0000000..dcd57dc
--- /dev/null
+++ b/Project/templates/modify.html
@@ -0,0 +1,96 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+  <title>修改账户</title>
+  <link rel="stylesheet" href="{{ url_for('static', filename='css/style.css') }}">
+  <script src="https://cdn.bootcss.com/blueimp-md5/2.12.0/js/md5.min.js"></script>
+  <script>
+        window.onload = function() {
+            {% with messages = get_flashed_messages() %}
+            {% if messages %}
+                var message = "";
+                {% for msg in messages %}
+                    message += "{{ msg }}\n";
+                {% endfor %}
+                alert(message);
+            {% endif %}
+            {% endwith %}
+        };
+    </script>
+</head>
+
+<body>
+  <form action="#" method="post">
+    <ul>
+        <div>
+          <div>证件号码：</div>
+          <input type="text" id="cardCode" name="cardCode" placeholder="请输入您的证件号码" required>
+        </div>
+      </li>
+      <li>
+        <div>
+          <div>登陆密码：</div>
+          <input type="password" id="password" placeholder="请输入您的密码" required>
+          <input id="encryptedPassword" name="encryptedPassword" type="hidden">
+        </div>
+      </li>
+      <li>
+        <div>
+          <div>修改内容：</div>
+          <select id="modifyType" name="modifyType" onchange="modify.showModifyPassword()" aria-label="请选择您的修改内容" title="请选择您的修改内容" required>
+            <option value="1">删除账户</option>
+            <option value="2">修改密码</option>
+            <option value="3">修改手机号</option>
+          </select>
+        </div>
+      </li>
+      <li class="modifyPassword" style="display: none;">
+        <div>
+          <div>修改密码：</div>
+          <input type="password" id="newPassword" placeholder="6-20位字母、数字或符号">
+          <input id="encryptedNewPassword" name="encryptedNewPassword" type="hidden">
+        </div>
+      </li>
+      <li class="modifyPassword" style="display: none;">
+        <div>
+          <div>确认密码：</div>
+          <input type="password" id="confirmPassword" placeholder="再次输入您的修改密码">
+        </div>
+      </li>
+      <li class="modifymobileNo" style="display: none;">
+        <div>
+          <div>修改手机号：</div>
+          <input type="text" id="mobileNo" name="mobileNo" value title="手机号码" aria-label="手机号码" maxlength="11" placeholder="11位手机号">
+        </div>
+      </li>
+      <div>
+        <button type="submit" onclick="return submitForm()">确认</button>
+      </div>
+    </ul>
+
+  </form>
+  
+  <script src="{{ url_for('static', filename='js/checkInfo.js') }}"></script>
+  <script src="{{ url_for('static', filename='js/modify.js') }}"></script>
+  <script>
+    function submitForm() {
+      document.getElementById('encryptedPassword').value = md5(
+          document.getElementById('password').value
+        )
+      
+      let modifyType = document.getElementById('modifyType').value
+      if (modifyType === '1') {
+        // document.getElementById('newPassword') = ''
+        return true
+      } else if (modifyType == '2') {
+        document.getElementById('encryptedNewPassword').value = md5(
+          document.getElementById('newPassword').value
+        )
+        return checkInfo.checkNewPassword()
+      } else if (modifyType == '3') {
+        return checkInfo.checkMobileNo()
+      }
+    }
+  </script>
+</body>
+</html>
\ No newline at end of file
diff --git a/Project/templates/signup.html b/Project/templates/signup.html
new file mode 100644
index 0000000..518e500
--- /dev/null
+++ b/Project/templates/signup.html
@@ -0,0 +1,115 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+  <title>我的12306注册</title>
+  <link rel="stylesheet" href="{{ url_for('static', filename='css/style.css') }}">
+  <script src="https://cdn.bootcss.com/blueimp-md5/2.12.0/js/md5.min.js"></script>
+  <script>
+        window.onload = function() {
+            {% with messages = get_flashed_messages() %}
+            {% if messages %}
+                var message = "";
+                {% for msg in messages %}
+                    message += "{{ msg }}\n";
+                {% endfor %}
+                alert(message);
+            {% endif %}
+            {% endwith %}
+        };
+    </script>
+</head>
+
+<body>
+  <form action="#" method="post">
+    <ul>
+      <li>
+        <div>
+          <div>用 户 名：</div>
+          <input type="text" id="name" name="name" placeholder="用户名设置成功后不可修改" required>
+        </div>
+      </li>
+      <li>
+        <div>
+          <div>登陆密码：</div>
+          <input type="password" id="password" placeholder="6-20位字母、数字或符号" required>
+          <input id="encryptedPassword" name="encryptedPassword" type="hidden">
+        </div>
+      </li>
+      <li>
+        <div>
+          <div>确认密码：</div>
+          <input type="password" id="confirmPassword" placeholder="再次输入您的登录密码" required>
+        </div>
+      </li>
+      <li>
+        <div>
+          <div>证件类型：</div>
+          <input name="cardTypeCode" id="cardTypeCode" value="1" type="hidden">
+          <select id="cardType" aria-label="请选择您的证件类型" title="请选择您的证件类型" required>
+            <option value="1">中国居民身份证</option>
+            <option value="1">港澳台居民身份证</option>
+          </select>
+        </div>
+      </li>
+      <li>
+        <div>
+          <div>姓 名：</div>
+          <input type="text" id="regist_name" name="regist_name" placeholder="请输入姓名" required>
+        </div>
+      </li>
+      <li>
+        <div>
+          <div>证件号码：</div>
+          <input type="text" id="cardCode" name="cardCode" placeholder="请输入您的证件号码" maxlength="18" required>
+        </div>
+      </li>
+      <li>
+        <div>
+          <div>优惠（待）类型：</div>
+          <select id="passengerType" name="passengerType" aria-label="请选择旅客类型" title="请选择旅客类型" required>
+            <option value="1">成人</option>
+            <option value="2">儿童</option>
+            <option value="3">学生</option>
+            <option value="4">残疾军人</option>
+          </select>
+        </div>
+      </li>
+      <li style="height: 1px;border-top: 1px dashed #DEDEDE;margin: 15px 0;"></li>
+      <li>
+        <div>
+          <div>邮 箱：</div>
+          <input type="text" id="email" name="email" title="请正确填写邮箱地址" placeholder="请正确填写邮箱地址" aria-label="请正确填写邮箱地址" required>
+        </div>
+      </li>
+      <li>
+        <div>
+          <div>手机号码：</div>
+          <div>
+            <select id="mobileCode" name="mobileCode" required>
+              <option value="86">+86 中国</option>
+            </select>
+            <input type="text" id="mobileNo" name="mobileNo" value title="手机号码" aria-label="手机号码" maxlength="11" required>
+          </div> 
+        </div>
+      </li>
+      <div>
+        <button type="submit" onclick="return submitForm()">下一步</button>
+      </div>
+    </ul>
+
+  </form>
+
+  <script src="{{ url_for('static', filename='js/checkInfo.js') }}"></script>
+  <script>
+    function submitForm() {
+      if (checkInfo.checkCardCode() && checkInfo.checkMobileNo() && checkInfo.checkPassword()) {
+        document.getElementById('encryptedPassword').value = md5(
+          document.getElementById('password').value
+        )
+        return true
+      }
+      return false
+    }
+  </script>
+</body>
+</html>
\ No newline at end of file