diff --git a/Cargo.lock b/Cargo.lock
index 30c9457..e6dbef0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -247,6 +247,15 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "matchers"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8263075bb86c5a1b1427b5ae862e8889656f126e9f77c484496e8b47cf5c5558"
+dependencies = [
+ "regex-automata",
+]
+
 [[package]]
 name = "memoffset"
 version = "0.6.5"
@@ -390,6 +399,30 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "regex"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c4eb3267174b8c6c2f654116623910a0fef09c4753f8dd83db29c48a0df988b"
+dependencies = [
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c230d73fb8d8c1b9c0b3135c5142a8acee3a0558fb8db5cf1cb65f8d7862132"
+dependencies = [
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.6.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a3f87b73ce11b1619a3c6332f45341e0047173771e8b8b73f87bfeefb7b56244"
+
 [[package]]
 name = "ring"
 version = "0.16.20"
@@ -610,9 +643,13 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "60db860322da191b40952ad9affe65ea23e7dd6a5c442c2c42865810c6ab8e6b"
 dependencies = [
  "ansi_term",
+ "matchers",
+ "once_cell",
+ "regex",
  "sharded-slab",
  "smallvec",
  "thread_local",
+ "tracing",
  "tracing-core",
  "tracing-log",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 39757c8..a9235b1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ pin-project-lite = "0.2"
 rustls = {version = "0.20", default-features = false}
 sha1 = "0.10"
 tracing = "0.1"
-tracing-subscriber = "0.3"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 webpki-roots = "0.22"
 
 [profile.release]
diff --git a/src/main.rs b/src/main.rs
index 62f2580..ca9b370 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -11,7 +11,8 @@ use std::{rc::Rc, sync::Arc};
 
 use clap::{Parser, Subcommand};
 use monoio::net::TcpListener;
-use tracing::{error, info, Level};
+use tracing::{error, info};
+use tracing_subscriber::{fmt, prelude::*, EnvFilter};
 
 use crate::{client::ShadowTlsClient, server::ShadowTlsServer, util::set_tcp_keepalive};
 
@@ -68,7 +69,10 @@ enum Commands {
 }
 
 fn main() {
-    tracing_subscriber::fmt().with_max_level(Level::INFO).init();
+    tracing_subscriber::registry()
+        .with(fmt::layer())
+        .with(EnvFilter::from_default_env())
+        .init();
     let args = Arc::new(Args::parse());
     let mut threads = Vec::new();
     let parallelism = get_parallelism(&args);