diff --git a/Apimanager_backend/Apimanager_backend.csproj b/Apimanager_backend/Apimanager_backend.csproj
index ce65827..533afb7 100644
--- a/Apimanager_backend/Apimanager_backend.csproj
+++ b/Apimanager_backend/Apimanager_backend.csproj
@@ -7,6 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="AutoMapper" Version="13.0.1" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
@@ -15,11 +16,4 @@
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
   </ItemGroup>
 
-  <ItemGroup>
-    <Folder Include="Controllers\" />
-    <Folder Include="Services\" />
-    <Folder Include="Tools\" />
-    <Folder Include="Config\" />
-  </ItemGroup>
-
 </Project>
diff --git a/Apimanager_backend/Config/MyAutomapper.cs b/Apimanager_backend/Config/MyAutomapper.cs
new file mode 100644
index 0000000..159ff8c
--- /dev/null
+++ b/Apimanager_backend/Config/MyAutomapper.cs
@@ -0,0 +1,14 @@
+using Apimanager_backend.Dtos;
+using Apimanager_backend.Models;
+using AutoMapper;
+
+namespace Apimanager_backend.Config
+{
+    public class MyAutomapper:Profile
+    {
+        public MyAutomapper()
+        {
+            CreateMap<User,UserInfoDto>();
+        }
+    }
+}
diff --git a/Apimanager_backend/Config/ServiceCollectionExtensions.cs b/Apimanager_backend/Config/ServiceCollectionExtensions.cs
new file mode 100644
index 0000000..28a5528
--- /dev/null
+++ b/Apimanager_backend/Config/ServiceCollectionExtensions.cs
@@ -0,0 +1,15 @@
+using Apimanager_backend.Services;
+using System.Runtime.CompilerServices;
+
+namespace Apimanager_backend.Config
+{
+    public static class ServiceCollectionExtensions
+    {
+        public static IServiceCollection AddAllService(this IServiceCollection services,IConfiguration configuration)
+        {
+            services.AddAutoMapper(AppDomain.CurrentDomain.GetAssemblies());
+            services.AddScoped<IUserService, UserService>();
+            return services;
+        }
+    }
+}
diff --git a/Apimanager_backend/Controllers/UserController.cs b/Apimanager_backend/Controllers/UserController.cs
new file mode 100644
index 0000000..279a954
--- /dev/null
+++ b/Apimanager_backend/Controllers/UserController.cs
@@ -0,0 +1,53 @@
+using Apimanager_backend.Dtos;
+using Apimanager_backend.Exceptions;
+using Apimanager_backend.Services;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Apimanager_backend.Filters;
+
+namespace Apimanager_backend.Controllers
+{
+    [ModelValidationFilter()]
+    [Route("api/[controller]")]
+    [ApiController]
+    public class UserController : ControllerBase
+    {
+        private readonly IUserService userService;
+        public UserController(IUserService userService)
+        {
+            this.userService = userService;
+        }
+        /// <summary>
+        /// 用户登录控制器
+        /// </summary>
+        /// <param name="dto">登录信息</param>
+        /// <returns>通用返回信息格式</returns>
+        [HttpPost("Login")]
+        public async Task<ActionResult<ResponseBase<UserInfoDto>>> Login([FromBody]UserLoginDto dto)
+        {
+            try
+            {
+                UserInfoDto user = await userService.LoginAsync(dto.UserName, dto.Password);
+
+                var responseInfo = new ResponseBase<UserInfoDto>(
+                        code: 2000,
+                        message: "Login successful",
+                        data: user
+                    );
+                return Ok(responseInfo);
+            }
+            catch (BaseException e)
+            {
+
+                //错误时，构建错误信息对象
+                var responseInfo = new ResponseBase<object?>(
+                        code:e.code,
+                        message: e.message,
+                        data: null
+                    );
+
+                return Unauthorized(responseInfo);
+            }
+        }
+    }
+}
diff --git a/Apimanager_backend/Data/ApiContext.cs b/Apimanager_backend/Data/ApiContext.cs
index 1be7614..9038552 100644
--- a/Apimanager_backend/Data/ApiContext.cs
+++ b/Apimanager_backend/Data/ApiContext.cs
@@ -24,6 +24,9 @@ namespace Apimanager_backend.Data
         protected override void OnModelCreating(ModelBuilder modelBuilder)
         {
             modelBuilder.ApplyConfigurationsFromAssembly(typeof(ApiContext).Assembly);
+            // 配置全局查询筛选器
+            modelBuilder.Entity<User>().HasQueryFilter(u => !u.IsDelete);
+            modelBuilder.Entity<Api>().HasQueryFilter(a => !a.IsDelete);
         }
 
     }
diff --git a/Apimanager_backend/Dtos/CreateUserDto.cs b/Apimanager_backend/Dtos/CreateUserDto.cs
new file mode 100644
index 0000000..9c8b9d2
--- /dev/null
+++ b/Apimanager_backend/Dtos/CreateUserDto.cs
@@ -0,0 +1,6 @@
+namespace Apimanager_backend.Dtos
+{
+    public class CreateUserDto
+    {
+    }
+}
diff --git a/Apimanager_backend/Dtos/ResponseBase.cs b/Apimanager_backend/Dtos/ResponseBase.cs
new file mode 100644
index 0000000..94d94f9
--- /dev/null
+++ b/Apimanager_backend/Dtos/ResponseBase.cs
@@ -0,0 +1,20 @@
+namespace Apimanager_backend.Dtos
+{
+    /// <summary>
+    /// 响应基类，构造最后的返回结果
+    /// </summary>
+    /// <typeparam name="T">返回的具体数据类型</typeparam>
+    public class ResponseBase<T>
+    {
+        public int Code { get; set; }
+        public string Message { get; set; }
+        public T? Data { get; set; }
+        public ResponseBase(int code,string message,T data)
+        {
+            this.Code = code;
+            this.Message = message;
+            this.Data = data;
+        }
+        public ResponseBase() { }
+    }
+}
diff --git a/Apimanager_backend/Dtos/UpdateUserDto.cs b/Apimanager_backend/Dtos/UpdateUserDto.cs
new file mode 100644
index 0000000..3c53eed
--- /dev/null
+++ b/Apimanager_backend/Dtos/UpdateUserDto.cs
@@ -0,0 +1,6 @@
+namespace Apimanager_backend.Dtos
+{
+    public class UpdateUserDto
+    {
+    }
+}
diff --git a/Apimanager_backend/Dtos/UserInfoDto.cs b/Apimanager_backend/Dtos/UserInfoDto.cs
new file mode 100644
index 0000000..927ffed
--- /dev/null
+++ b/Apimanager_backend/Dtos/UserInfoDto.cs
@@ -0,0 +1,15 @@
+using Apimanager_backend.Models;
+
+namespace Apimanager_backend.Dtos
+{
+    public class UserInfoDto
+    {
+        public int Id { get; set; }
+        public string UserName { get; set; }
+        public string Email { get; set; }
+        public UserRole Role { get; set; }
+        public bool IsBan { get; set; }
+        public decimal Balance { get; set; }
+        public DateTime Created { get; set; }
+    }
+}
diff --git a/Apimanager_backend/Dtos/UserLoginDto.cs b/Apimanager_backend/Dtos/UserLoginDto.cs
new file mode 100644
index 0000000..676efce
--- /dev/null
+++ b/Apimanager_backend/Dtos/UserLoginDto.cs
@@ -0,0 +1,13 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace Apimanager_backend.Dtos
+{
+    public class UserLoginDto
+    {
+        [MaxLength(20,ErrorMessage = "The maximum username is 20 characters")]
+        public string UserName { get; set; }
+        [MaxLength(50,ErrorMessage = "The maximum password is 50 characters")]
+        [Required(ErrorMessage = "password is required")]
+        public string Password { get; set; }
+    }
+}
diff --git a/Apimanager_backend/Exceptions/BaseException.cs b/Apimanager_backend/Exceptions/BaseException.cs
new file mode 100644
index 0000000..a75a609
--- /dev/null
+++ b/Apimanager_backend/Exceptions/BaseException.cs
@@ -0,0 +1,13 @@
+namespace Apimanager_backend.Exceptions
+{
+    public class BaseException:Exception
+    {
+        public int code;
+        public string message;
+        public BaseException(int code, string message):base(message) 
+        {
+            this.code = code;
+            this.message = message;
+        }
+    }
+}
diff --git a/Apimanager_backend/Filters/ModelValidationFilter.cs b/Apimanager_backend/Filters/ModelValidationFilter.cs
new file mode 100644
index 0000000..8349db8
--- /dev/null
+++ b/Apimanager_backend/Filters/ModelValidationFilter.cs
@@ -0,0 +1,34 @@
+using Apimanager_backend.Dtos;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Filters;
+
+namespace Apimanager_backend.Filters
+{
+    public class ModelValidationFilter : Attribute,IActionFilter
+    {
+        public void OnActionExecuted(ActionExecutedContext context) { }
+
+        public void OnActionExecuting(ActionExecutingContext context)
+        {
+            if (!context.ModelState.IsValid)
+            {
+                // 将所有的错误信息收集到列表中
+                var errors = context.ModelState.Values
+                    .SelectMany(v => v.Errors)
+                    .Select(e => e.ErrorMessage)
+                    .ToList();
+
+                // 构造统一的响应格式
+                var response = new ResponseBase<object?>
+                {
+                    Code = 1001, // 统一的错误码
+                    Message = errors[0],
+                    Data = null
+                };
+
+                // 设置错误响应和 HTTP 状态码
+                context.Result = new BadRequestObjectResult(response);
+            }
+        }
+    }
+}
diff --git a/Apimanager_backend/Program.cs b/Apimanager_backend/Program.cs
index 8661d8a..78c9887 100644
--- a/Apimanager_backend/Program.cs
+++ b/Apimanager_backend/Program.cs
@@ -1,4 +1,6 @@
+using Apimanager_backend.Config;
 using Apimanager_backend.Data;
+using Apimanager_backend.Filters;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.DependencyInjection;
 
@@ -15,8 +17,11 @@ string? constr = configuration.GetConnectionString("DefaultConnection");
 builder.Services.AddDbContext<ApiContext>(option =>
 option.UseMySql(constr, MySqlServerVersion.AutoDetect(constr))
 );
-
-builder.Services.AddControllers();
+builder.Services.AddAllService(configuration);
+builder.Services.AddControllers(options =>
+{
+    options.Filters.Add<ModelValidationFilter>();
+});
 // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen();
diff --git a/Apimanager_backend/Services/IUserService.cs b/Apimanager_backend/Services/IUserService.cs
new file mode 100644
index 0000000..0d2212a
--- /dev/null
+++ b/Apimanager_backend/Services/IUserService.cs
@@ -0,0 +1,84 @@
+using Apimanager_backend.Dtos;
+using Apimanager_backend.Models;
+using System.Runtime.CompilerServices;
+
+namespace Apimanager_backend.Services
+{
+    public interface IUserService
+    {
+         /// <summary>
+    /// 登录用户，根据用户名和密码进行身份验证。
+    /// </summary>
+    /// <param name="username">用户名</param>
+    /// <param name="password">密码</param>
+    /// <returns>包含用户信息的 <see cref="UserInfoDto"/></returns>
+    Task<UserInfoDto> LoginAsync(string username, string password);
+
+    /// <summary>
+    /// 发送密码重置邮件到指定邮箱。
+    /// </summary>
+    /// <param name="email">用户注册的邮箱地址</param>
+    /// <returns>异步操作</returns>
+    Task SendResetPasswordEmailAsync(string email);
+
+    /// <summary>
+    /// 重置用户密码，验证重置令牌的有效性并更新密码。
+    /// </summary>
+    /// <param name="email">用户邮箱地址</param>
+    /// <param name="token">重置密码的令牌</param>
+    /// <param name="newPassword">新的密码</param>
+    /// <returns>异步操作</returns>
+    Task ResetPasswordAsync(string email, string token, string newPassword);
+
+    /// <summary>
+    /// 获取用户信息。
+    /// </summary>
+    /// <param name="username">用户名</param>
+    /// <returns>包含用户信息的 <see cref="UserInfoDto"/></returns>
+    Task<UserInfoDto> GetUserAsync(string username);
+
+    /// <summary>
+    /// 更新用户信息。
+    /// </summary>
+    /// <param name="user">包含更新信息的 <see cref="UpdateUserDto"/></param>
+    /// <returns>更新后的 <see cref="UserInfoDto"/></returns>
+    Task<UserInfoDto> UpdateUserAsync(UpdateUserDto user);
+
+    /// <summary>
+    /// 删除指定的用户。
+    /// </summary>
+    /// <param name="username">要删除的用户名</param>
+    /// <returns>异步操作</returns>
+    Task DeleteUserAsync(string username);
+
+    /// <summary>
+    /// 创建新用户。
+    /// </summary>
+    /// <param name="user">包含新用户信息的 <see cref="CreateUserDto"/></param>
+    /// <returns>创建成功的用户信息 <see cref="UserInfoDto"/></returns>
+    Task<UserInfoDto> CreateUserAsync(CreateUserDto user);
+
+    /// <summary>
+    /// 禁用用户，使其无法登录。
+    /// </summary>
+    /// <param name="username">要禁用的用户名</param>
+    /// <returns>异步操作</returns>
+    Task BanUserAsync(string username);
+
+    /// <summary>
+    /// 取消禁用用户，恢复登录权限。
+    /// </summary>
+    /// <param name="username">要取消禁用的用户名</param>
+    /// <returns>异步操作</returns>
+    Task UnbanUserAsync(string username);
+
+    /// <summary>
+    /// 获取分页的用户列表。
+    /// </summary>
+    /// <param name="page">要获取的页码，从1开始</param>
+    /// <param name="pageSize">每页的用户数量</param>
+    /// <param name="desc">是否按降序排序</param>
+    /// <returns>包含用户信息的 <see cref="List{UserInfoDto}"/></returns>
+    Task<List<UserInfoDto>> GetUsersAsync(int page, int pageSize, bool desc);
+    }
+}
diff --git a/Apimanager_backend/Services/UserService.cs b/Apimanager_backend/Services/UserService.cs
new file mode 100644
index 0000000..c6859a7
--- /dev/null
+++ b/Apimanager_backend/Services/UserService.cs
@@ -0,0 +1,89 @@
+using Apimanager_backend.Config;
+using Apimanager_backend.Data;
+using Apimanager_backend.Dtos;
+using Apimanager_backend.Exceptions;
+using Apimanager_backend.Models;
+using AutoMapper;
+using Microsoft.AspNetCore.Connections.Features;
+using Microsoft.EntityFrameworkCore;
+using System.ComponentModel;
+
+namespace Apimanager_backend.Services
+{
+    public class UserService : IUserService
+    {
+        private readonly ApiContext apiContext;
+        private readonly IMapper mapper;
+        public UserService(ApiContext apiContext,IMapper automapper)
+        {
+            this.apiContext = apiContext;
+            this.mapper = automapper;
+        }
+        public Task BanUserAsync(string username)
+        {
+            throw new NotImplementedException();
+        }
+
+        public Task<UserInfoDto> CreateUserAsync(CreateUserDto user)
+        {
+            throw new NotImplementedException();
+        }
+
+        public Task DeleteUserAsync(string username)
+        {
+            throw new NotImplementedException();
+        }
+
+        public Task<UserInfoDto> GetUserAsync(string username)
+        {
+            throw new NotImplementedException();
+        }
+
+        public Task<List<UserInfoDto>> GetUsersAsync(int page, int pageSize, bool desc)
+        {
+            throw new NotImplementedException();
+        }
+
+        public async Task<UserInfoDto> LoginAsync(string username, string password)
+        {
+            //查找用户
+            User? user = await apiContext.Users.SingleOrDefaultAsync(x => 
+                x.Username == username && x.PassHash == password
+            );
+
+            //用户不存在或密码错误都为登录失败
+            if(user == null)
+            {
+                throw new BaseException(2001, "Invalid username or password");
+            }
+
+            //用户被禁用
+            if (user.IsBan)
+            {
+                throw new BaseException(2002, "User account is disabled");
+            }
+
+            return mapper.Map<UserInfoDto>(user);
+        }
+
+        public Task ResetPasswordAsync(string email, string token, string newPassword)
+        {
+            throw new NotImplementedException();
+        }
+
+        public Task SendResetPasswordEmailAsync(string email)
+        {
+            throw new NotImplementedException();
+        }
+
+        public Task UnbanUserAsync(string username)
+        {
+            throw new NotImplementedException();
+        }
+
+        public Task<UserInfoDto> UpdateUserAsync(UpdateUserDto user)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}
diff --git a/Apimanager_backend/Tools/HashHelper.cs b/Apimanager_backend/Tools/HashHelper.cs
new file mode 100644
index 0000000..4898bae
--- /dev/null
+++ b/Apimanager_backend/Tools/HashHelper.cs
@@ -0,0 +1,6 @@
+namespace Apimanager_backend.Tools
+{
+    public class HashHelper
+    {
+    }
+}