diff --git a/src/main.rs b/src/main.rs
index 6daaaad..2056757 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,16 +2,16 @@ use actix_web::{App, HttpServer};
 mod models;
 mod repositories;
 mod services;
-mod routes;
 mod utils;
+mod routes;
+
+use crate::routes::user_routes;
 
 #[actix_web::main]
 async fn main() -> std::io::Result<()> {
-
     HttpServer::new(|| {
         App::new()
-            .service(routes::register_user)
-            .service(routes::get_all_user)
+            .configure(user_routes::register)
     })
         .bind("127.0.0.1:8080")?
         .run()
diff --git a/src/models/user.rs b/src/models/user.rs
index b2cb6c5..334058f 100644
--- a/src/models/user.rs
+++ b/src/models/user.rs
@@ -1,4 +1,5 @@
-use mysql::serde;
+use mysql::prelude::{FromRow};
+use mysql::{FromRowError, Row};
 
 #[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
 pub struct User {
@@ -7,4 +8,11 @@ pub struct User {
     pub age: i32,
     pub email: String,
     pub password: String,
+}
+
+impl FromRow for User {
+    fn from_row_opt(row: Row) -> mysql::Result<Self, FromRowError> {
+        let (id, name, age, email, password) = mysql::from_row::<(i32, String, i32, String, String)>(row);
+        Ok(User { id, name, age, email, password })
+    }
 }
\ No newline at end of file
diff --git a/src/repositories/user_repository.rs b/src/repositories/user_repository.rs
index 7f05667..e216435 100644
--- a/src/repositories/user_repository.rs
+++ b/src/repositories/user_repository.rs
@@ -18,14 +18,79 @@ pub fn create_user(conn: &mut mysql::PooledConn, user: &User) -> Result<(), mysq
     )
 }
 
+/**
+ * 删除用户
+ */
+pub fn delete_user(conn: &mut mysql::PooledConn, user: &User) -> Result<(), mysql::Error> {
+    conn.exec_drop(
+        r"DELETE FROM users WHERE id = :id",
+        params! {
+            "id" => &user.id,
+        },
+    )
+}
+
+/**
+ * 更新用户
+ */
+pub fn update_user(conn: &mut mysql::PooledConn, user: &User) -> Result<(), mysql::Error> {
+    conn.exec_drop(
+        r"UPDATE users SET name = :name, age = :age, email = :email, password = :password WHERE id = :id",
+        params! {
+            "id" => &user.id,
+            "name" => &user.name,
+            "age" => &user.age,
+            "email" => &user.email,
+            "password" => &user.password,
+        },
+    )
+}
+
 /**
  * 查询所有用户
  */
-pub fn query_all_users(conn: &mut mysql::PooledConn) -> Result<Vec<User>, mysql::Error> {
+pub fn query_all_user(conn: &mut mysql::PooledConn) -> Result<Vec<User>, mysql::Error> {
     conn.query_map(
         "SELECT id, name, age, email, password FROM users",
         |(id, name, age, email, password)| {
             User { id, name, age, email, password }
         },
     )
+}
+
+/**
+ * 根据ID查询用户
+ */
+pub fn query_user_by_id(conn: &mut mysql::PooledConn, id: i32) -> Result<Option<User>, mysql::Error> {
+    let result: Option<User> = conn.exec_first(
+        "SELECT id, name, age, email, password FROM users WHERE id = :id",
+        params! {
+            "id" => id,
+        },
+    )?;
+    Ok(result)
+}
+
+/**
+ * 根据用户名查询用户
+ */
+pub fn query_user_by_name(conn: &mut mysql::PooledConn, name: &str) -> Result<Option<User>, mysql::Error> {
+    conn.exec_first(
+        "SELECT id, name, age, email, password FROM users WHERE name = :name",
+        params! {
+            "name" => name,
+        },
+    )
+}
+
+/**
+ * 根据邮箱查询用户
+ */
+pub fn query_user_by_email(conn: &mut mysql::PooledConn, email: &str) -> Result<Option<User>, mysql::Error> {
+    conn.exec_first(
+        "SELECT id, name, age, email, password FROM users WHERE email = :email",
+        params! {
+            "email" => email,
+        },
+    )
 }
\ No newline at end of file
diff --git a/src/routes/mod.rs b/src/routes/mod.rs
index 4137c65..8cda988 100644
--- a/src/routes/mod.rs
+++ b/src/routes/mod.rs
@@ -1,3 +1 @@
-mod user_routes;
-pub use user_routes::register_user;
-pub use user_routes::get_all_user;
\ No newline at end of file
+pub mod user_routes;
\ No newline at end of file
diff --git a/src/routes/user_routes.rs b/src/routes/user_routes.rs
index 4eb6b00..1d3f38b 100644
--- a/src/routes/user_routes.rs
+++ b/src/routes/user_routes.rs
@@ -1,20 +1,20 @@
-use serde::Deserialize;
 use actix_web::{get, post, web, HttpResponse, Responder};
 use crate::models::user::User;
 use crate::services::user_service;
 use crate::utils::pool;
 
-#[derive(Deserialize)]
-struct RegisterUser {
-    name: String,
-    age: i32,
-    email: String,
-    password: String,
+pub(crate) fn register(config: &mut web::ServiceConfig) {
+    config.service(register_user);
+    config.service(query_all_user);
+    config.service(query_user_by_id);
+    config.service(query_user_by_email);
+    config.service(query_user_by_name);
+    config.service(update_user);
+    config.service(delete_user);
 }
 
-
 #[post("/user/register")]
-async fn register_user(user: web::Json<RegisterUser>) -> impl Responder {
+async fn register_user(user: web::Json<User>) -> impl Responder {
     let pool = pool::get_db_pool();
     let mut conn = pool.get_conn().unwrap();
     let mut new_user = User {
@@ -28,10 +28,60 @@ async fn register_user(user: web::Json<RegisterUser>) -> impl Responder {
     HttpResponse::Ok().json("User registered successfully")
 }
 
-#[get("/user/all")]
-async fn get_all_user() -> impl Responder {
+#[get("/user/query_all_user")]
+async fn query_all_user() -> impl Responder {
     let pool = pool::get_db_pool();
     let mut conn = pool.get_conn().unwrap();
-    let users = user_service::select_all_users(&mut conn).unwrap();
+    let users = user_service::query_all_user(&mut conn).unwrap();
     HttpResponse::Ok().json(users)
+}
+
+#[get("/user/{id}")]
+async fn query_user_by_id(path: web::Path<i32>) -> impl Responder {
+    let id = path.into_inner();
+    let pool = pool::get_db_pool();
+    let mut conn = pool.get_conn().unwrap();
+
+    match user_service::query_user_by_id(&mut conn, id) {
+        Ok(user) => HttpResponse::Ok().json(user),
+        Err(_) => HttpResponse::NotFound().json("User not found"),
+    }
+}
+
+#[get("/user/{email}")]
+async fn query_user_by_email(path: web::Path<String>) -> impl Responder {
+    let pool = pool::get_db_pool();
+    let mut conn = pool.get_conn().unwrap();
+    let email = path.into_inner();
+    match user_service::query_user_by_email(&mut conn, email.as_str()) {
+        Ok(user) => HttpResponse::Ok().json(user),
+        Err(_) => HttpResponse::NotFound().json("User not found")
+    }
+}
+
+#[get("/user/{name}")]
+async fn query_user_by_name(path: web::Path<String>) -> impl Responder {
+    let pool = pool::get_db_pool();
+    let mut conn = pool.get_conn().unwrap();
+    let name = path.into_inner();
+    match user_service::query_user_by_name(&mut conn, name.as_str()) {
+        Ok(user) => HttpResponse::Ok().json(user),
+        Err(_) => HttpResponse::NotFound().json("User not found")
+    }
+}
+
+#[post("/user/update")]
+async fn update_user(user: web::Json<User>) -> impl Responder {
+    let pool = pool::get_db_pool();
+    let mut conn = pool.get_conn().unwrap();
+    user_service::update_user(&mut conn, &user).unwrap();
+    HttpResponse::Ok().json("User updated successfully")
+}
+
+#[post("/user/delete")]
+async fn delete_user(user: web::Json<User>) -> impl Responder {
+    let pool = pool::get_db_pool();
+    let mut conn = pool.get_conn().unwrap();
+    user_service::delete_user(&mut conn, &user).unwrap();
+    HttpResponse::Ok().json("User deleted successfully")
 }
\ No newline at end of file
diff --git a/src/services/user_service.rs b/src/services/user_service.rs
index 5184f3c..1514542 100644
--- a/src/services/user_service.rs
+++ b/src/services/user_service.rs
@@ -15,6 +15,42 @@ pub fn create_user(conn: &mut PooledConn, user: &mut User) -> Result<(), mysql::
 /**
  * 查询所有用户
  */
-pub fn select_all_users(conn: &mut PooledConn) -> Result<Vec<User>, mysql::Error> {
-    user_repository::query_all_users(conn)
+pub fn query_all_user(conn: &mut PooledConn) -> Result<Vec<User>, mysql::Error> {
+    user_repository::query_all_user(conn)
+}
+
+pub fn query_user_by_id(conn: &mut PooledConn, id: i32) -> Result<Option<User>, mysql::Error> {
+    user_repository::query_user_by_id(conn, id)
+}
+
+pub fn query_user_by_email(conn: &mut PooledConn, email: &str) -> Result<Option<User>, mysql::Error> {
+    user_repository::query_user_by_email(conn, email)
+}
+
+pub fn query_user_by_name(conn: &mut PooledConn, name: &str) -> Result<Option<User>, mysql::Error> {
+    user_repository::query_user_by_name(conn, name)
+}
+
+pub fn update_user(conn: &mut PooledConn, user: &User) -> Result<(), mysql::Error> {
+    if user_repository::query_user_by_id(conn, user.id)?.is_none() {
+        return Err(mysql::Error::MySqlError(mysql::MySqlError {
+            code: 1062,
+            message: "User not found".to_string(),
+            state: "".to_string(),
+        }));
+    }
+
+    user_repository::update_user(conn, user)
+}
+
+pub fn delete_user(conn: &mut PooledConn, user: &User) -> Result<(), mysql::Error> {
+    if user_repository::query_user_by_id(conn, user.id)?.is_none() {
+        return Err(mysql::Error::MySqlError(mysql::MySqlError {
+            code: 1062,
+            message: "User not found".to_string(),
+            state: "".to_string(),
+        }));
+    }
+
+    user_repository::delete_user(conn, user)
 }
\ No newline at end of file