diff --git a/login.py b/login.py
new file mode 100644
index 0000000..ec291fd
--- /dev/null
+++ b/login.py
@@ -0,0 +1,91 @@
+from tkinter import *
+import pymysql
+
+
+# 注册功能
+def register():
+    username = entry_username.get()
+    password = entry_password.get()
+
+    try:
+        cursor.execute("INSERT INTO users (username, password) VALUES (%s, %s)", (username, password))
+        con.commit()
+        label_message.config(text='注册成功！')
+    except Exception as e:
+        label_message.config(text='注册失败！')
+        print('数据库异常', e)
+
+
+# 登录功能
+def login():
+    global count
+    username = entry_username.get()
+    password = entry_password.get()
+
+    cursor.execute("SELECT * FROM users WHERE username = %s AND password = %s", (username, password))
+    result = cursor.fetchone()
+
+    if result:
+        label_message.config(text='登录成功!')
+        window.destroy()
+        import welcome
+    else:
+        label_message.config(text='账号或密码错误！')
+        count += 1
+        if count == 3:
+            label_message.config(text='登录失败！')
+            btn_login.config(state='disabled')
+
+
+# 创建登录界面窗口
+window = Tk()
+window.title("用户登录")
+screen_width = window.winfo_screenwidth()
+screen_height = window.winfo_screenheight()
+
+# 设置窗口大小和位置
+window_width = int(screen_width / 2)
+window_height = int(screen_height / 2)
+x = (screen_width - window_width) // 2
+y = (screen_height - window_height) // 2
+window.geometry("{}x{}+{}+{}".format(window_width, window_height, x, y))
+
+# 创建用户名、密码输入框和登录按钮
+label_username = Label(window, text="账号:")
+label_username.pack()
+entry_username = Entry(window)
+entry_username.pack()
+
+label_password = Label(window, text="密码:")
+label_password.pack()
+entry_password = Entry(window, show='*')
+entry_password.pack()
+
+btn_login = Button(window, text="登录", command=login)
+btn_login.place(x=310, y=90)
+
+btn_register = Button(window, text="注册", command=register)
+btn_register.place(x=420, y=90)
+
+label_message = Label(window, text="", width=window_width)
+label_message.place(x=0, y=120)
+# 数据库连接部分
+con = pymysql.connect(
+    host='localhost',
+    user='root',
+    password='root',
+    database='health',
+    charset='utf8mb4',
+    autocommit=True
+)
+cursor = con.cursor()  # 创建游标对象
+
+# 查询用户信息并输出
+cursor.execute("select * from users")
+result = cursor.fetchall()
+print(type(result), result)
+for row in result:
+    print(row)
+
+# 启动窗口主循环
+window.mainloop()
\ No newline at end of file