diff --git a/src/cli.rs b/src/cli.rs
index 5985c70..9e08840 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -60,10 +60,10 @@ pub fn handle_command() {
         Command::Add { files, all, update } => {
             add(files, all, update);
         }
-        Command::Rm { files, cached, recursive} => {
+        Command::Rm { files, cached, recursive } => {
             remove(files, cached, recursive).expect("删除失败");
         }
-        Command::Commit { message, allow_empty, } => {
+        Command::Commit { message, allow_empty } => {
             commit(message, allow_empty);
         }
     }
diff --git a/src/commands/add.rs b/src/commands/add.rs
index f009c2c..fc032c1 100644
--- a/src/commands/add.rs
+++ b/src/commands/add.rs
@@ -1,9 +1,11 @@
+use std::env;
+use std::path::{Path, PathBuf};
+
+use colored::Colorize;
+
 use crate::models::blob::Blob;
 use crate::models::index::{FileMetaData, Index};
 use crate::utils::util::{check_repo_exist, get_relative_path, get_working_dir, list_files};
-use colored::Colorize;
-use std::env;
-use std::path::{Path, PathBuf};
 
 // TODO: fatal: ../moj/app.py: '../moj/app.py' is outside repository at 'Git-Rust'
 pub fn add(files: Vec<String>, all: bool, mut update: bool) {
@@ -19,6 +21,7 @@ pub fn add(files: Vec<String>, all: bool, mut update: bool) {
             dot = false;
             update = false;
         } else if update {
+            // update 优先级次之
             dot = false;
         }
 
@@ -29,9 +32,9 @@ pub fn add(files: Vec<String>, all: bool, mut update: bool) {
             println!("{}", "'.'代表了当前目录".bright_green());
             env::current_dir().unwrap()
         } else {
-            panic!("不应该运行到这里");
+            panic!();
         };
-        
+
         println!("Working on [{}]\n", path.to_str().unwrap().bright_blue());
         files = list_files(&path).unwrap();
         if update {
diff --git a/src/commands/mod.rs b/src/commands/mod.rs
index 852962e..6732aa1 100644
--- a/src/commands/mod.rs
+++ b/src/commands/mod.rs
@@ -1,5 +1,5 @@
-pub mod init;
 pub mod add;
 pub mod commit;
+pub mod init;
+pub mod remove;
 pub mod status;
-pub mod remove;
\ No newline at end of file
diff --git a/src/commands/remove.rs b/src/commands/remove.rs
index 765d9df..b2b16d0 100644
--- a/src/commands/remove.rs
+++ b/src/commands/remove.rs
@@ -1,9 +1,9 @@
-use std::{fs, io};
-use std::path::PathBuf;
-use colored::Colorize;
 use crate::models::index::Index;
 use crate::utils::util;
 use crate::utils::util::check_repo_exist;
+use colored::Colorize;
+use std::path::PathBuf;
+use std::{fs, io};
 
 /// 从暂存区&|工作区删除文件
 pub fn remove(files: Vec<String>, cached: bool, recursive: bool) -> io::Result<()> {
@@ -15,7 +15,8 @@ pub fn remove(files: Vec<String>, cached: bool, recursive: bool) -> io::Result<(
             println!("Warning: {} not exist", file.red());
             continue;
         }
-        if !index.contains(&path) { //不能删除未跟踪的文件
+        if !index.contains(&path) {
+            //不能删除未跟踪的文件
             println!("Warning: {} not tracked", file.red());
             continue;
         }
@@ -41,4 +42,4 @@ pub fn remove(files: Vec<String>, cached: bool, recursive: bool) -> io::Result<(
         println!("removed [{}]", file.bright_green());
     }
     Ok(())
-}
\ No newline at end of file
+}
diff --git a/src/head.rs b/src/head.rs
index c85ac8a..84fba17 100644
--- a/src/head.rs
+++ b/src/head.rs
@@ -25,10 +25,8 @@ fn update_branch_head(branch_name: &String, commit_hash: &String) {
     branch.push("refs");
     branch.push("heads");
     branch.push(branch_name);
-    std::fs::write(&branch, commit_hash).expect(&format!(
-        "无法写入branch in {:?} with {}",
-        branch, commit_hash
-    ));
+    std::fs::write(&branch, commit_hash)
+        .expect(&format!("无法写入branch in {:?} with {}", branch, commit_hash));
 }
 
 fn get_branch_head(branch_name: &String) -> String {
diff --git a/src/lib.rs b/src/lib.rs
index 5f577c9..493a380 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,6 +1,6 @@
 // 不使用lib.rs的话，就无法在tests里引用到src中的模块
-pub mod models;
-pub mod utils;
 pub mod commands;
+mod head;
+pub mod models;
 mod store;
-mod head;
\ No newline at end of file
+pub mod utils;
diff --git a/src/models/blob.rs b/src/models/blob.rs
index 98e57f0..e24f566 100644
--- a/src/models/blob.rs
+++ b/src/models/blob.rs
@@ -27,10 +27,7 @@ impl Blob {
     pub fn load(hash: &String) -> Blob {
         let s = Store::new();
         let data = s.load(hash);
-        Blob {
-            hash: hash.clone(),
-            data,
-        }
+        Blob { hash: hash.clone(), data }
     }
 
     /// 写入文件；优化：文件已存在时不做操作
diff --git a/src/models/index.rs b/src/models/index.rs
index 203375b..461a63a 100644
--- a/src/models/index.rs
+++ b/src/models/index.rs
@@ -2,12 +2,12 @@ use crate::models::blob::Blob;
 use crate::models::object::Hash;
 use crate::utils::util;
 use crate::utils::util::get_relative_path;
+use colored::Colorize;
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 use std::fs;
 use std::path::{Path, PathBuf};
 use std::time::SystemTime;
-use colored::Colorize;
 
 // 文件元数据结构
 #[derive(Serialize, Deserialize, Debug, Clone)]
@@ -85,11 +85,6 @@ impl Index {
         &self.get_hash(file).unwrap_or_default() == hash
     }
 
-    // 获取所有文件元数据
-    fn get_all(&self) -> &HashMap<PathBuf, FileMetaData> {
-        &self.entries
-    }
-
     pub fn contains(&self, path: &Path) -> bool {
         let path = Index::preprocess_path(path);
         self.entries.contains_key(&path)
diff --git a/src/models/mod.rs b/src/models/mod.rs
index 3a27bc2..5691ebb 100644
--- a/src/models/mod.rs
+++ b/src/models/mod.rs
@@ -1,5 +1,5 @@
-pub mod commit;
 pub mod blob;
-pub mod tree;
+pub mod commit;
+pub mod index;
 pub mod object;
-pub mod index;
\ No newline at end of file
+pub mod tree;
diff --git a/src/models/object.rs b/src/models/object.rs
index ff70033..fe39df9 100644
--- a/src/models/object.rs
+++ b/src/models/object.rs
@@ -1 +1 @@
-pub type Hash = String;
\ No newline at end of file
+pub type Hash = String;
diff --git a/src/models/tree.rs b/src/models/tree.rs
index 310d336..6f8fe39 100644
--- a/src/models/tree.rs
+++ b/src/models/tree.rs
@@ -38,10 +38,7 @@ fn store_path_to_tree(path_entries: &Vec<PathBuf>, current_root: PathBuf) -> Tre
         };
         entry
     };
-    let mut tree = Tree {
-        hash: "".to_string(),
-        entries: Vec::new(),
-    };
+    let mut tree = Tree { hash: "".to_string(), entries: Vec::new() };
     let mut processed_path: HashMap<String, bool> = HashMap::new();
     for path in path_entries.iter() {
         // 判断是不是直接在根目录下
@@ -149,10 +146,7 @@ impl Tree {
                     sub_blobs
                         .iter()
                         .map(|(path, blob_hash)| {
-                            (
-                                PathBuf::from(entry.name.clone()).join(path),
-                                blob_hash.clone(),
-                            )
+                            (PathBuf::from(entry.name.clone()).join(path), blob_hash.clone())
                         })
                         .collect::<Vec<(PathBuf, Hash)>>()
                         .as_mut(),
@@ -177,14 +171,8 @@ mod test {
         for test_file in vec!["b.txt", "mit_src/a.txt"] {
             let test_file = PathBuf::from(test_file);
             util::ensure_test_file(&test_file, None);
-            index.add(
-                test_file.clone(),
-                FileMetaData::new(&Blob::new(&test_file), &test_file),
-            );
-            index.add(
-                test_file.clone(),
-                FileMetaData::new(&Blob::new(&test_file), &test_file),
-            );
+            index.add(test_file.clone(), FileMetaData::new(&Blob::new(&test_file), &test_file));
+            index.add(test_file.clone(), FileMetaData::new(&Blob::new(&test_file), &test_file));
         }
 
         let tree = super::Tree::new(&index);
@@ -200,10 +188,7 @@ mod test {
         for test_file in test_files.clone() {
             let test_file = PathBuf::from(test_file);
             util::ensure_test_file(&test_file, None);
-            index.add(
-                test_file.clone(),
-                FileMetaData::new(&Blob::new(&test_file), &test_file),
-            );
+            index.add(test_file.clone(), FileMetaData::new(&Blob::new(&test_file), &test_file));
         }
 
         let tree = super::Tree::new(&index);
@@ -223,10 +208,7 @@ mod test {
         for test_file in test_files.clone() {
             let test_file = PathBuf::from(test_file);
             util::ensure_test_file(&test_file, None);
-            index.add(
-                test_file.clone(),
-                FileMetaData::new(&Blob::new(&test_file), &test_file),
-            );
+            index.add(test_file.clone(), FileMetaData::new(&Blob::new(&test_file), &test_file));
         }
 
         let tree = super::Tree::new(&index);
@@ -250,10 +232,7 @@ mod test {
             util::ensure_test_file(&test_file, None);
             let blob = Blob::new(&test_file);
             test_blobs.push(blob.clone());
-            index.add(
-                test_file.clone(),
-                FileMetaData::new(&Blob::new(&test_file), &test_file),
-            );
+            index.add(test_file.clone(), FileMetaData::new(&Blob::new(&test_file), &test_file));
         }
 
         let tree = super::Tree::new(&index);
diff --git a/src/rustfmt.toml b/src/rustfmt.toml
new file mode 100644
index 0000000..608dcd4
--- /dev/null
+++ b/src/rustfmt.toml
@@ -0,0 +1,20 @@
+# Run rustfmt with this config (it should be picked up automatically).
+version = "Two"
+use_small_heuristics = "Max"
+max_width = 100
+struct_lit_width = 60
+chain_width = 60
+single_line_if_else_max_width = 60
+single_line_let_else_max_width = 60
+
+merge_derives = true
+reorder_imports = true
+# 格式化注释代码块：Unstable
+format_code_in_doc_comments = true
+
+
+# 彩色输出：Unstable
+color = "Auto"
+ignore = [
+    "tests",
+]
\ No newline at end of file
diff --git a/src/utils/mod.rs b/src/utils/mod.rs
index 929d03a..812d1ed 100644
--- a/src/utils/mod.rs
+++ b/src/utils/mod.rs
@@ -1 +1 @@
-pub mod util;
\ No newline at end of file
+pub mod util;
diff --git a/tests/test.rs b/tests/test.rs
index e426bd2..36c2367 100644
--- a/tests/test.rs
+++ b/tests/test.rs
@@ -1,7 +1,7 @@
-use sha1::{Sha1, Digest};
-use std::fs::File;
-use std::io::{Write, BufReader, BufRead, Error};
 use mit::utils::util;
+use sha1::{Digest, Sha1};
+use std::fs::File;
+use std::io::{BufRead, BufReader, Error, Write};
 
 #[test]
 fn test_hash() {
@@ -42,4 +42,4 @@ fn test_string() {
     s += "2";
     s.push('!');
     println!("{}", s);
-}
\ No newline at end of file
+}