diff --git a/tuic-server/Cargo.toml b/tuic-server/Cargo.toml
index 6b1dc5e..ddb3005 100644
--- a/tuic-server/Cargo.toml
+++ b/tuic-server/Cargo.toml
@@ -6,7 +6,9 @@ edition = "2021"
 [dependencies]
 bytes = { version = "1.4.0", default-features = false, features = ["std"] }
 crossbeam-utils = { version = "0.8.14", default-features = false, features = ["std"] }
+env_logger = { version = "0.10.0", default-features = false, features = ["humantime"] }
 lexopt = { version = "0.3.0", default-features = false }
+log = { version = "0.4.17", default-features = false, features = ["serde", "std"] }
 parking_lot = { version = "0.12.1", default-features = false }
 quinn = { version = "0.9.3", default-features = false, features = ["futures-io", "runtime-tokio", "tls-rustls"] }
 register-count = { version = "0.1.0", default-features = false, features = ["std"] }
diff --git a/tuic-server/src/config.rs b/tuic-server/src/config.rs
index d08c1a2..e409ffe 100644
--- a/tuic-server/src/config.rs
+++ b/tuic-server/src/config.rs
@@ -1,5 +1,6 @@
 use crate::utils::CongestionControl;
 use lexopt::{Arg, Error as ArgumentError, Parser};
+use log::LevelFilter;
 use serde::{de::Error as DeError, Deserialize, Deserializer};
 use serde_json::Error as SerdeError;
 use std::{
@@ -48,6 +49,8 @@ pub struct Config {
     pub gc_interval: Duration,
     #[serde(default = "default::gc_lifetime")]
     pub gc_lifetime: Duration,
+    #[serde(default = "default::log_level")]
+    pub log_level: LevelFilter,
 }
 
 impl Config {
@@ -83,6 +86,7 @@ impl Config {
 
 mod default {
     use crate::utils::CongestionControl;
+    use log::LevelFilter;
     use std::time::Duration;
 
     pub fn congestion_control() -> CongestionControl {
@@ -120,6 +124,10 @@ mod default {
     pub fn gc_lifetime() -> Duration {
         Duration::from_secs(15)
     }
+
+    pub fn log_level() -> LevelFilter {
+        LevelFilter::Warn
+    }
 }
 
 pub fn deserialize_from_str<'de, T, D>(deserializer: D) -> Result<T, D::Error>
diff --git a/tuic-server/src/main.rs b/tuic-server/src/main.rs
index 2021912..9e689a3 100644
--- a/tuic-server/src/main.rs
+++ b/tuic-server/src/main.rs
@@ -2,6 +2,7 @@ use self::{
     config::{Config, ConfigError},
     server::Server,
 };
+use env_logger::Builder as LoggerBuilder;
 use quinn::ConnectionError;
 use rustls::Error as RustlsError;
 use std::{env, io::Error as IoError, net::SocketAddr, process};
@@ -28,6 +29,8 @@ async fn main() {
         }
     };
 
+    LoggerBuilder::new().filter_level(cfg.log_level).init();
+
     match Server::init(cfg) {
         Ok(server) => server.start().await,
         Err(err) => {