diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f94b62..b2ee0fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.7.2
+
+- fix: check env
+
 ## 0.7.1
 
 - fix: crate root
diff --git a/Cargo.toml b/Cargo.toml
index 31ef957..acb866a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,12 +1,12 @@
 [package]
 name = "rsw"
-version = "0.7.1"
+version = "0.7.2"
 description = "wasm-pack based build tool"
 edition = "2021"
 authors = ["lencx <cxin1314@gmail.com>"]
 homepage = "https://github.com/lencx/rsw-rs"
 repository = "https://github.com/lencx/rsw-rs"
-keywords = ["rsw", "wasm-pack"]
+keywords = ["rsw", "wasm-pack", "webassembly", "wasm", "npm"]
 license = "MIT"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
@@ -22,3 +22,4 @@ regex = "1.5.4"
 serde = "1.0.133"
 serde_derive = "1.0.133"
 toml = "0.5.8"
+which = "4.2.4"
diff --git a/README.md b/README.md
index 929b00d..3062a06 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,11 @@
 <p align="center">
   <img src="./rsw.png" width="120">
+  <h2 align="center">rsw-rs</h2>
 </p>
 
-「🌐 Language」[简体中文](./README.zh_CN.md)
-
 **`rsw = rs(rust) → w(wasm)`** - A command-line tool for automatically rebuilding local changes, based on the `wasm-pack` implementation.
 
-## rsw-rs
+**Englist | [简体中文](./README.zh_CN.md)**
 
 ## Pre-installed
 
diff --git a/README.zh_CN.md b/README.zh_CN.md
index 78ffcb1..7e18896 100644
--- a/README.zh_CN.md
+++ b/README.zh_CN.md
@@ -1,12 +1,11 @@
 <p align="center">
   <img src="./rsw.png" width="120">
+  <h2 align="center">rsw-rs</h2>
 </p>
 
-「🌐 语言」[English](./README.md)
-
 **`rsw = rs(rust) → w(wasm)`** - 基于 `wasm-pack` 实现的一个命令行工具，当本地文件变更时自动构建。
 
-## rsw-rs
+**[English](./README.md) | 简体中文**
 
 ## 预安装
 
diff --git a/npm/package.json b/npm/package.json
index 2fb38df..f0f8a6d 100644
--- a/npm/package.json
+++ b/npm/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rsw/cli",
-  "version": "0.7.1",
+  "version": "0.7.2",
   "description": "🦞 wasm-pack based build tool",
   "main": "binary.js",
   "author": "lencx <cxin1314@gmail.com>",
diff --git a/src/core/build.rs b/src/core/build.rs
index c989366..526b69e 100644
--- a/src/core/build.rs
+++ b/src/core/build.rs
@@ -29,12 +29,17 @@ impl Build {
         let name = &config.name;
         let root = config.root.as_ref().unwrap();
         let out_dir = config.out_dir.as_ref().unwrap();
-        let crate_root = PathBuf::from(root)
-            .join(name)
-            .canonicalize().unwrap();
+        let crate_root = PathBuf::from(root).join(name).canonicalize().unwrap();
         let build_name = crate_root.to_string_lossy().to_string();
         let target = config.target.as_ref().unwrap();
-        let mut args = vec!["build", &build_name, "--out-dir", out_dir, "--target", target];
+        let mut args = vec![
+            "build",
+            &build_name,
+            "--out-dir",
+            out_dir,
+            "--target",
+            target,
+        ];
 
         // profile
         let mut profile = config.build.as_ref().unwrap().profile.as_ref().unwrap();
@@ -97,9 +102,7 @@ impl Build {
             let cli = &self.cli;
             Link::new(
                 cli.into(),
-                PathBuf::from(root)
-                    .join(name)
-                    .join(out_dir),
+                PathBuf::from(root).join(name).join(out_dir),
                 name.to_string(),
             )
             .init();
diff --git a/src/core/cli.rs b/src/core/cli.rs
index 55bf60c..d1bc92f 100644
--- a/src/core/cli.rs
+++ b/src/core/cli.rs
@@ -7,8 +7,8 @@ use std::path::PathBuf;
 use std::rc::Rc;
 
 use crate::config::{CrateConfig, RswConfig};
-use crate::core::{Build, Clean, Create, Init, Link, Watch, RswErr};
-use crate::utils::{init_rsw_crates, rsw_watch_file, print};
+use crate::core::{Build, Clean, Create, Init, Link, RswErr, Watch};
+use crate::utils::{init_rsw_crates, print, rsw_watch_file};
 
 #[derive(Parser)]
 #[clap(version, about, long_about = None)]
@@ -106,16 +106,19 @@ impl Cli {
             let name = &i.name;
             let root = i.root.as_ref().unwrap();
             let out = i.out_dir.as_ref().unwrap();
-            let crate_out = PathBuf::from(root)
-                .join(name).join(out);
+            let crate_out = PathBuf::from(root).join(name).join(out);
 
             crates.push(format!(
                 "{} :~> {}",
                 name,
-                crate_out.canonicalize().unwrap_or_else(|e| {
-                    print(RswErr::Crate(crate_out.to_string_lossy().to_string(), e));
-                    std::process::exit(1);
-                }).to_string_lossy().to_string()
+                crate_out
+                    .canonicalize()
+                    .unwrap_or_else(|e| {
+                        print(RswErr::Crate(crate_out.to_string_lossy().to_string(), e));
+                        std::process::exit(1);
+                    })
+                    .to_string_lossy()
+                    .to_string()
             ));
         }
         init_rsw_crates(crates.join("\n").as_bytes()).unwrap();
diff --git a/src/utils.rs b/src/utils.rs
index 9a8a264..e7a5bf2 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -7,21 +7,20 @@ use std::{
     path::{Path, PathBuf},
 };
 use toml::Value;
+use which::which;
 
 use crate::config;
 use crate::core::RswErr;
 
-// https://stackoverflow.com/questions/35045996/check-if-a-command-is-in-path-executable-as-process
 pub fn check_env_cmd(program: &str) -> bool {
-    if let Ok(path) = env::var("PATH") {
-        for p in path.split(":") {
-            let p_str = format!("{}/{}", p, program);
-            if fs::metadata(p_str).is_ok() {
-                return true;
-            }
+    let result = which(program);
+    match result {
+        Ok(_) => true,
+        Err(e) => {
+            eprint!("{}\n", e);
+            false
         }
     }
-    false
 }
 
 // get fields from `Cargo.toml`