diff --git a/backend/src/auth/jwt.rs b/backend/src/auth/jwt.rs
index 92b58f7..b567024 100644
--- a/backend/src/auth/jwt.rs
+++ b/backend/src/auth/jwt.rs
@@ -5,7 +5,7 @@ use ed25519_dalek::{SigningKey, VerifyingKey};
 use std::fs::File;
 use std::io::Write;
 use std::{env, fs};
-use crate::utils::CustomError;
+use crate::utils::CustomResult;
 use rand::{SeedableRng, RngCore};
 
 #[derive(Debug, Serialize, Deserialize, Clone)]
@@ -27,7 +27,7 @@ impl SecretKey {
     }
 }
 
-pub fn generate_key() -> Result<(),CustomError> {
+pub fn generate_key() -> CustomResult<()> {
     let mut csprng = rand::rngs::StdRng::from_entropy();
 
     let mut private_key_bytes = [0u8; 32];
@@ -49,7 +49,7 @@ pub fn generate_key() -> Result<(),CustomError> {
     Ok(())
 }
 
-pub fn get_key(key_type: SecretKey) -> Result<[u8; 32],CustomError> {
+pub fn get_key(key_type: SecretKey) -> CustomResult<[u8; 32]> {
     let path = env::current_dir()?
         .join("assets")
         .join("key")
@@ -60,7 +60,7 @@ pub fn get_key(key_type: SecretKey) -> Result<[u8; 32],CustomError> {
     Ok(key)
 }
 
-pub fn generate_jwt(claims: CustomClaims, duration: Duration) -> Result<String,CustomError> {
+pub fn generate_jwt(claims: CustomClaims, duration: Duration) -> CustomResult<String> {
     let key_bytes = get_key(SecretKey::Signing)?;
     let signing_key = SigningKey::from_bytes(&key_bytes);
 
@@ -79,7 +79,7 @@ pub fn generate_jwt(claims: CustomClaims, duration: Duration) -> Result<String,C
     Ok(token)
 }
 
-pub fn validate_jwt(token: &str) -> Result<CustomClaims, CustomError> {
+pub fn validate_jwt(token: &str) -> CustomResult<CustomClaims> {
     let key_bytes = get_key(SecretKey::Verifying)?;
     let verifying = VerifyingKey::from_bytes(&key_bytes)?;
     let token = UntrustedToken::new(token)?;
diff --git a/backend/src/config.rs b/backend/src/config.rs
index 9312fbe..ccbd8de 100644
--- a/backend/src/config.rs
+++ b/backend/src/config.rs
@@ -1,6 +1,7 @@
 use serde::{Deserialize,Serialize};
 use std::{ env, fs};
 use std::path::PathBuf;
+use crate::utils::CustomResult;
 
 #[derive(Deserialize,Serialize,Debug,Clone)]
 pub struct Config {
@@ -35,17 +36,17 @@ pub struct NoSqlConfig {
 }
 
 impl Config {
-    pub fn read() -> Result<Self, Box<dyn std::error::Error>> {
+    pub fn read() -> CustomResult<Self> {
         let path=Self::get_path()?;
         Ok(toml::from_str(&fs::read_to_string(path)?)?)
     }
-    pub fn write(config:Config) -> Result<(), Box<dyn std::error::Error>> {
+    pub fn write(config:Config) -> CustomResult<()> {
         let path=Self::get_path()?;
         fs::write(path, toml::to_string(&config)?)?;
         Ok(())
     }
 
-    pub fn get_path() -> Result<PathBuf, Box<dyn std::error::Error>> {
+    pub fn get_path() -> CustomResult<PathBuf> {
         Ok(env::current_dir()?
             .join("assets")
             .join("config.toml"))
diff --git a/backend/src/database/relational/builder.rs b/backend/src/database/relational/builder.rs
index 8b46cf2..cd38459 100644
--- a/backend/src/database/relational/builder.rs
+++ b/backend/src/database/relational/builder.rs
@@ -1,5 +1,5 @@
 use regex::Regex;
-use crate::utils::CustomError;
+use crate::utils::{CustomResult,CustomError};
 use std::collections::HashMap;
 use std::hash::Hash;
 
@@ -11,7 +11,7 @@ pub enum ValidatedValue {
 }
 
 impl ValidatedValue {
-    pub fn new_identifier(value: String) -> Result<Self, CustomError> {
+    pub fn new_identifier(value: String) -> CustomResult<Self> {
         let valid_pattern = Regex::new(r"^[a-zA-Z][a-zA-Z0-9_]{0,63}$").unwrap();
         if !valid_pattern.is_match(&value) {
             return Err(CustomError::from_str("Invalid identifier format"));
@@ -19,7 +19,7 @@ impl ValidatedValue {
         Ok(ValidatedValue::Identifier(value))
     }
 
-    pub fn new_rich_text(value: String) -> Result<Self, CustomError> {
+    pub fn new_rich_text(value: String) -> CustomResult<Self> {
         let dangerous_patterns = [
             "UNION ALL SELECT",
             "UNION SELECT",
@@ -44,7 +44,7 @@ impl ValidatedValue {
         Ok(ValidatedValue::RichText(value))
     }
 
-    pub fn new_plain_text(value: String) -> Result<Self, CustomError> {
+    pub fn new_plain_text(value: String) -> CustomResult<Self> {
         if value.contains(';') || value.contains("--") {
             return Err(CustomError::from_str("Invalid characters in text"));
         }
@@ -111,7 +111,7 @@ impl WhereCondition {
         field: String,
         operator: Operator,
         value: Option<String>,
-    ) -> Result<Self, CustomError> {
+    ) -> CustomResult<Self> {
         let field = ValidatedValue::new_identifier(field)?;
 
         let value = match value {
@@ -148,7 +148,7 @@ pub struct QueryBuilder {
 }
 
 impl QueryBuilder {
-    pub fn new(operation: SqlOperation, table: String) -> Result<Self, CustomError> {
+    pub fn new(operation: SqlOperation, table: String) -> CustomResult<Self> {
         Ok(QueryBuilder {
             operation,
             table: ValidatedValue::new_identifier(table)?,
@@ -160,7 +160,7 @@ impl QueryBuilder {
         })
     }
 
-    pub fn build(&self) -> Result<(String, Vec<String>), CustomError> {
+    pub fn build(&self) -> CustomResult<(String, Vec<String>)> {
         let mut query = String::new();
         let mut values = Vec::new();
         let mut param_counter = 1;
@@ -234,7 +234,7 @@ impl QueryBuilder {
         &self,
         clause: &WhereClause,
         mut param_counter: i32,
-    ) -> Result<(String, Vec<String>), CustomError> {
+    ) -> CustomResult<(String, Vec<String>)> {
         let mut values = Vec::new();
 
         let sql = match clause {
diff --git a/backend/src/database/relational/mod.rs b/backend/src/database/relational/mod.rs
index 5d2d213..9c14ff3 100644
--- a/backend/src/database/relational/mod.rs
+++ b/backend/src/database/relational/mod.rs
@@ -2,20 +2,20 @@ mod postgresql;
 use crate::config;
 use async_trait::async_trait;
 use std::collections::HashMap;
-use crate::utils::CustomError;
+use crate::utils::{CustomResult,CustomError};
 use std::sync::Arc;
 pub mod builder;
 
 #[async_trait]
 pub trait DatabaseTrait: Send + Sync {
-    async fn connect(database: &config::SqlConfig) -> Result<Self, CustomError>
+    async fn connect(database: &config::SqlConfig) -> CustomResult<Self>
     where
         Self: Sized;
     async fn execute_query<'a>(
         &'a self,
         builder: &builder::QueryBuilder,
-    ) -> Result<Vec<HashMap<String, String>>, CustomError>;
-    async fn initialization(database: config::SqlConfig) -> Result<(), CustomError>
+    ) -> CustomResult<Vec<HashMap<String, String>>>;
+    async fn initialization(database: config::SqlConfig) -> CustomResult<()>
     where
         Self: Sized;
 }
@@ -30,10 +30,10 @@ impl Database {
         &self.db
     }
 
-    pub async fn link(database: &config::SqlConfig) -> Result<Self, CustomError> {
+    pub async fn link(database: &config::SqlConfig) -> CustomResult<Self> {
         let db = match database.db_type.as_str() {
             "postgresql" => postgresql::Postgresql::connect(database).await?,
-            _ => return Err("unknown database type".into()),
+            _ => return Err(CustomError::from_str("unknown database type")),
         };
 
         Ok(Self {
@@ -41,10 +41,10 @@ impl Database {
         })
     }
 
-    pub async fn initial_setup(database: config::SqlConfig) -> Result<(), CustomError> {
+    pub async fn initial_setup(database: config::SqlConfig) -> CustomResult<()> {
         match database.db_type.as_str() {
             "postgresql" => postgresql::Postgresql::initialization(database).await?,
-            _ => return Err("unknown database type".into()),
+            _ => return Err(CustomError::from_str("unknown database type")),
         };
         Ok(())
     }
diff --git a/backend/src/database/relational/postgresql/mod.rs b/backend/src/database/relational/postgresql/mod.rs
index 566775b..b875f29 100644
--- a/backend/src/database/relational/postgresql/mod.rs
+++ b/backend/src/database/relational/postgresql/mod.rs
@@ -2,8 +2,10 @@ use super::{DatabaseTrait,builder};
 use crate::config;
 use async_trait::async_trait;
 use sqlx::{Column, PgPool, Row, Executor};
-use std::{collections::HashMap, error::Error};
+use std::collections::HashMap;
 use std::{env, fs};
+use crate::utils::CustomResult;
+
 
 #[derive(Clone)]
 pub struct Postgresql {
@@ -12,7 +14,7 @@ pub struct Postgresql {
 
 #[async_trait]
 impl DatabaseTrait for Postgresql {
-    async fn initialization(db_config: config::SqlConfig) -> Result<(), Box<dyn Error>> {
+    async fn initialization(db_config: config::SqlConfig) -> CustomResult<()> {
         let path = env::current_dir()?
             .join("src")
             .join("database")
@@ -34,15 +36,14 @@ impl DatabaseTrait for Postgresql {
         Ok(())
     }
 
-    async fn connect(db_config: &config::SqlConfig) -> Result<Self, Box<dyn Error>> {
+    async fn connect(db_config: &config::SqlConfig) -> CustomResult<Self> {
         let connection_str = format!(
             "postgres://{}:{}@{}:{}/{}",
             db_config.user, db_config.password, db_config.address, db_config.port, db_config.db_name
         );
 
         let pool = PgPool::connect(&connection_str)
-            .await
-            .map_err(|e| Box::new(e) as Box<dyn Error>)?;
+            .await?;
 
         Ok(Postgresql { pool })
     }
@@ -50,7 +51,7 @@ impl DatabaseTrait for Postgresql {
     async fn execute_query<'a>(
         &'a self,
         builder: &builder::QueryBuilder,
-    ) -> Result<Vec<HashMap<String, String>>, Box<dyn Error + 'a>> {
+    ) -> CustomResult<Vec<HashMap<String, String>>> {
         let (query, values) = builder.build()?;
 
         let mut sqlx_query = sqlx::query(&query);
@@ -61,8 +62,7 @@ impl DatabaseTrait for Postgresql {
 
         let rows = sqlx_query
             .fetch_all(&self.pool)
-            .await
-            .map_err(|e| Box::new(e) as Box<dyn Error>)?;
+            .await?;
 
         let mut results = Vec::new();
         for row in rows {
diff --git a/backend/src/database/relational/uilts.rs b/backend/src/database/relational/uilts.rs
deleted file mode 100644
index e69de29..0000000
diff --git a/backend/src/main.rs b/backend/src/main.rs
index 62f8d56..385d465 100644
--- a/backend/src/main.rs
+++ b/backend/src/main.rs
@@ -6,11 +6,11 @@ mod routes;
 use chrono::Duration;
 use database::relational;
 use rocket::{
-    get, http::Status, launch, outcome::IntoOutcome, post, response::status, State
+    get, http::Status, launch,  response::status, State
 };
 use std::sync::Arc;
 use tokio::sync::Mutex;
-use std::error::Error;
+use utils::{CustomResult, AppResult,CustomError};
 
 
 
@@ -20,15 +20,15 @@ struct AppState {
 }
 
 impl AppState {
-        async fn get_sql(&self) -> Result<relational::Database,Box<dyn Error>> {
+        async fn get_sql(&self) -> CustomResult<relational::Database> {
         self.db
             .lock()
             .await
             .clone()
-            .ok_or_else(|| "Database not initialized".into())
+            .ok_or_else(|| CustomError::from_str("Database not initialized"))
     }
 
-    async fn link_sql(&self, config: config::SqlConfig) ->  Result<,Box<dyn Error>>  {
+    async fn link_sql(&self, config: config::SqlConfig) ->  Result<(),CustomError>  {
         let database = relational::Database::link(&config)
             .await?;
         *self.db.lock().await = Some(database);
@@ -40,7 +40,7 @@ impl AppState {
 
 
 #[get("/system")]
-async fn token_system(_state: &State<AppState>) -> Result<status::Custom<String>, status::Custom<String>> {
+async fn token_system(_state: &State<AppState>) -> AppResult<status::Custom<String>> {
     let claims = auth::jwt::CustomClaims {
         name: "system".into(),
     };
@@ -77,8 +77,7 @@ async fn rocket() -> _ {
     } 
    
     rocket_builder = rocket_builder
-            .mount("/auth/token", rocket::routes![token_system])
-            .mount("/", rocket::routes![routes::intsall::test]);
+            .mount("/auth/token", rocket::routes![token_system]);
 
     rocket_builder
 }
diff --git a/backend/src/routes/intsall.rs b/backend/src/routes/intsall.rs
index 3fa354d..80a2f3f 100644
--- a/backend/src/routes/intsall.rs
+++ b/backend/src/routes/intsall.rs
@@ -1,82 +1,98 @@
-use serde::{Deserialize,Serialize};
-use crate::{config,utils};
-use crate::database::relational;
-use crate::AppState;
-use rocket::{
-    post,
-    http::Status,
-    response::status,
-    serde::json::Json,
-    State,
-};
-use crate::routes::person;
 use crate::auth;
+use crate::database::relational;
+use crate::routes::person;
+use crate::utils::AppResult;
+use crate::AppState;
+use crate::{config, utils};
 use chrono::Duration;
-
+use rocket::{http::Status, post, response::status, serde::json::Json, State};
+use serde::{Deserialize, Serialize};
 
 #[derive(Deserialize, Serialize)]
-pub struct InstallData{
-    name:String,
-    email:String,
-    password:String,
-    sql_config: config::SqlConfig
+pub struct InstallData {
+    name: String,
+    email: String,
+    password: String,
+    sql_config: config::SqlConfig,
 }
 #[derive(Deserialize, Serialize)]
-pub struct InstallReplyData{
-    token:String,
-    name:String,
-    password:String,
+pub struct InstallReplyData {
+    token: String,
+    name: String,
+    password: String,
 }
 
-
 #[post("/install", format = "application/json", data = "<data>")]
 pub async fn install(
     data: Json<InstallData>,
-    state: &State<AppState>
-) -> Result<status::Custom<Json<InstallReplyData>>, status::Custom<String>> {
+    state: &State<AppState>,
+) -> AppResult<status::Custom<Json<InstallReplyData>>> {
     let mut config = state.configure.lock().await;
     if config.info.install {
-        return Err(status::Custom(Status::BadRequest, "Database already initialized".to_string()));
+        return Err(status::Custom(
+            Status::BadRequest,
+            "Database already initialized".to_string(),
+        ));
     }
 
-    let data=data.into_inner();
+    let data = data.into_inner();
 
     relational::Database::initial_setup(data.sql_config.clone())
         .await
         .map_err(|e| status::Custom(Status::InternalServerError, e.to_string()))?;
-    
 
-    auth::jwt::generate_key();
+    let _ = auth::jwt::generate_key();
 
     config.info.install = true;
 
-    state.link_sql(data.sql_config.clone()).await?;
-    let sql= state.get_sql().await?;
+    state
+        .link_sql(data.sql_config.clone())
+        .await
+        .map_err(|e| status::Custom(Status::InternalServerError, e.to_string()))?;
+    let sql = state
+        .get_sql()
+        .await
+        .map_err(|e| status::Custom(Status::InternalServerError, e.to_string()))?;
 
+    let system_name = utils::generate_random_string(20);
+    let system_password = utils::generate_random_string(20);
 
-    let system_name=utils::generate_random_string(20);
-    let system_password=utils::generate_random_string(20);
-
-    let _ = person::insert(&sql,person::RegisterData{ name: data.name.clone(), email: data.email, password:data.password }).await?;
-    let _ = person::insert(&sql,person::RegisterData{ name: system_name.clone(), email: String::from("author@lsy22.com"), password:system_name.clone() }).await?;
+    let _ = person::insert(
+        &sql,
+        person::RegisterData {
+            name: data.name.clone(),
+            email: data.email,
+            password: data.password,
+        },
+    )
+    .await
+    .map_err(|e| status::Custom(Status::InternalServerError, e.to_string()));
+    let _ = person::insert(
+        &sql,
+        person::RegisterData {
+            name: system_name.clone(),
+            email: String::from("author@lsy22.com"),
+            password: system_name.clone(),
+        },
+    )
+    .await
+    .map_err(|e| status::Custom(Status::InternalServerError, e.to_string()));
     let token = auth::jwt::generate_jwt(
-        auth::jwt::CustomClaims{name:data.name.clone()},
-        Duration::days(7)
-    ).map_err(|e| status::Custom(Status::Unauthorized, e.to_string()))?;
-
-
+        auth::jwt::CustomClaims {
+            name: data.name.clone(),
+        },
+        Duration::days(7),
+    )
+    .map_err(|e| status::Custom(Status::Unauthorized, e.to_string()))?;
 
     config::Config::write(config.clone())
-        .map_err(|e| status::Custom(Status::InternalServerError, e.to_string()))?; 
-    Ok(
-        status::Custom(
-            Status::Ok,
-            Json(InstallReplyData{
-                token:token,
-                name: system_name,
-                password: system_password
-            }
-        )
-    )
-    )
-}
\ No newline at end of file
+        .map_err(|e| status::Custom(Status::InternalServerError, e.to_string()))?;
+    Ok(status::Custom(
+        Status::Ok,
+        Json(InstallReplyData {
+            token: token,
+            name: system_name,
+            password: system_password,
+        }),
+    ))
+}
diff --git a/backend/src/routes/mod.rs b/backend/src/routes/mod.rs
index 9d3a597..c245595 100644
--- a/backend/src/routes/mod.rs
+++ b/backend/src/routes/mod.rs
@@ -2,7 +2,9 @@ pub mod intsall;
 pub mod person;
 use rocket::routes; 
 
-// pub fn create_routes() -> Vec<rocket::Route> {
-
-// }
+pub fn create_routes() -> Vec<rocket::Route> {
+    routes![
+        intsall::install,
+    ]
+}
 
diff --git a/backend/src/routes/person.rs b/backend/src/routes/person.rs
index b1cc03d..6834b9e 100644
--- a/backend/src/routes/person.rs
+++ b/backend/src/routes/person.rs
@@ -9,8 +9,8 @@ use rocket::{
     State,
 };
 use std::collections::HashMap;
-use bcrypt::{hash, verify, DEFAULT_COST};
-use crate::utils::CustomError;
+use bcrypt::{hash, DEFAULT_COST};
+use crate::utils::CustomResult;
 
 
 
@@ -26,7 +26,7 @@ pub struct RegisterData{
     pub password:String
 } 
 
-pub async fn insert(sql:&relational::Database,data:RegisterData) -> Result<(),CustomError>{
+pub async fn insert(sql:&relational::Database,data:RegisterData) -> CustomResult<()>{
     let hashed_password = hash(data.password, DEFAULT_COST).expect("Failed to hash password");
     
 
diff --git a/backend/src/utils.rs b/backend/src/utils.rs
index dc56d9f..5a74e5f 100644
--- a/backend/src/utils.rs
+++ b/backend/src/utils.rs
@@ -1,5 +1,5 @@
 use rand::seq::SliceRandom;
-
+use rocket::response::status;
 
 pub fn generate_random_string(length: usize) -> String {
     let charset = b"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
@@ -8,7 +8,7 @@ pub fn generate_random_string(length: usize) -> String {
         .map(|_| *charset.choose(&mut rng).unwrap() as char)
         .collect()
 }
-
+#[derive(Debug)]
 pub struct CustomError(String);
 
 impl std::fmt::Display for CustomError {
@@ -17,7 +17,6 @@ impl std::fmt::Display for CustomError {
     }
 }
 
-
 impl<T> From<T> for CustomError
 where
     T: std::error::Error + Send + 'static,
@@ -32,3 +31,7 @@ impl CustomError {
         CustomError(error.to_string())
     }
 }
+
+pub type CustomResult<T> = Result<T, CustomError>;
+
+pub type AppResult<T> = Result<T, status::Custom<String>>;