diff --git a/Cargo.lock b/Cargo.lock
index 80a6e1a..085fe77 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -63,6 +63,7 @@ name = "rustgrep"
 version = "0.1.0"
 dependencies = [
  "crossbeam",
+ "termcolor",
  "walkdir",
 ]
 
@@ -75,6 +76,15 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06794f8f6c5c898b3275aebefa6b8a1cb24cd2c6c79397ab15774837a0bc5755"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "walkdir"
 version = "2.5.0"
diff --git a/Cargo.toml b/Cargo.toml
index 6c6448d..47e785c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,3 +13,4 @@ strip = true        # 自动剥离所有的调试信息和符号表（相当于
 [dependencies]
 walkdir = "2"       # 目录递归遍历库
 crossbeam = "0.8"   # crossbeam 线程池
+termcolor = "1.4"   # 颜色管理
diff --git a/src/lib.rs b/src/lib.rs
index 0449f83..705ef41 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,10 +1,12 @@
 use std::fs;
 use std::path::Path;
 use crossbeam::channel;
+use termcolor::{Color, ColorSpec, StandardStream, WriteColor};
 use walkdir::WalkDir;
+use std::io::Write;
 
 pub mod searcher;
-pub use searcher::{ should_skip_dir, is_valid_extension, FileResult };
+pub use searcher::{ should_skip_dir, is_valid_extension, FileResult, MatchLine};
 
 
 pub fn search_lines(root_dir: &str,extensions_str: Option<String>, real_query: &str,ignore_case: bool) {
@@ -33,20 +35,55 @@ pub fn search_lines(root_dir: &str,extensions_str: Option<String>, real_query: &
 
         drop(tx);
 
+        // 初始化工业级标准输出流（ColorChoice::Auto 代表自动检测：是终端就上色，是文件就纯文本）
+        let mut stdout = StandardStream::stdout(termcolor::ColorChoice::Auto);
+
+        // 路径字体样式
+        let mut path_color = ColorSpec::new();
+        path_color.set_fg(Some(Color::Magenta)).set_bold(true);
+
+        // 行号字体样式
+        let mut line_num_color = ColorSpec::new();
+        line_num_color.set_fg(Some(Color::Green));
+
+        // 关键字(搜索的词)的字体样式
+        let mut keyword_color = ColorSpec::new();
+        keyword_color.set_fg(Some(Color::Red)).set_bold(true);
+
         while let Ok(file_result) = rx.recv() {
-            // let normalized_path = Path::new(&file_result.path_name)
-            //     .components()
-            //     .map(|comp| comp.as_os_str().to_string_lossy())
-            //     .collect::<Vec<_>>()
-            //     .join(&MAIN_SEPARATOR.to_string());
             let normalized_path = file_result.path_name;
+
+            // 输出路径
+            stdout.set_color(&line_num_color).unwrap();
+            write!(&mut stdout, "\n\"{}\":\n", normalized_path).unwrap();
+            stdout.reset().unwrap();
+
+            // 最大行号
             let max_width = file_result.line_count.to_string().len();
 
-            println!("\x1b[35m{:?} :\x1b[0m", normalized_path);
-            for (line_num, line_str) in file_result.matches {
-                println!("\x1b[32m{:>width$} |\x1b[0m {}", line_num, line_str, width = max_width);
+            for mat in file_result.matches {
+                // 🎨 打印高亮行号并精准对齐
+                stdout.set_color(&line_num_color).unwrap();
+                write!(&mut stdout,"{:>width$} | ", mat.line_num, width = max_width).unwrap();
+                stdout.reset().unwrap();
+
+                let mut last_idx = 0;
+
+                for (start,end) in mat.sub_matches {
+                    // 先打印普通文本
+                    write!(&mut stdout, "{}", &mat.content[last_idx..start]).unwrap();
+
+                    // 打印关键字
+                    stdout.set_color(&keyword_color).unwrap();
+                    write!(&mut stdout, "{}", &mat.content[start..end]).unwrap();
+                    stdout.reset().unwrap();
+
+                    // 移动起始索引
+                    last_idx = end;
+                }
+                // 关键字列表外可能还有内容，以普通样式打印
+                writeln!(&mut stdout, "{}", &mat.content[last_idx..]).unwrap();
             }
-            println!();
         }
     }).unwrap()
 }
@@ -59,20 +96,21 @@ pub fn search_in_file(query: &str, path: &Path, ignore_case: bool) -> Option<Fil
         Ok(text) => text,
         Err(_) => return None
     };
+
     // 🌟 2. 跨模块调用：通过包名或相对路径调用 searcher 里的函数
     let results = searcher::search(query, &contents, ignore_case);
 
     if !results.is_empty() {
-        let mut matches_vec = Vec::new();
-
-        for (line_num, line_str) in results {
-            matches_vec.push((line_num, line_str.to_string()));
-        }
-
         let file_line_count = contents.lines().count();
         Some(FileResult {
             path_name: path.to_string_lossy().replace("\\","/"),
-            matches: matches_vec,
+            matches: results.into_iter()
+                .map(|(line_num, line_str, sub_matches)|MatchLine {
+                    line_num,
+                    content: line_str.to_string(),
+                    sub_matches
+                })
+                .collect(),
             line_count: file_line_count
         })
     } else {
diff --git a/src/searcher/core.rs b/src/searcher/core.rs
index 66fde89..d8780c5 100644
--- a/src/searcher/core.rs
+++ b/src/searcher/core.rs
@@ -1,11 +1,21 @@
+
 /// 核心搜索函数 <'a> 是显式生命周期注解
-pub fn search<'a>(query: &str, contents: &'a str, ignore_case: bool) -> Vec<(usize, &'a str)> {
+pub fn search<'a>(query: &str, contents: &'a str, ignore_case: bool) -> Vec<(usize,&'a str, Vec<(usize, usize)>)> {
     contents
         .lines()
         .enumerate()
         .map(|(idx, line)| (idx + 1, line))
-        .filter(|(_, line)| {
-            if ignore_case { line.to_lowercase().contains(&query) } else { line.contains(query) }
+        .filter_map(|(line_num, line)|{
+            let haystack = if ignore_case { line.to_lowercase() } else { line.to_string() };
+            if haystack.contains(query) {
+                let sub_matches: Vec<(usize,usize)> = haystack
+                    .match_indices(query)
+                    .map(|(start_idx,_)| (start_idx, start_idx+query.len()))
+                    .collect();
+                Some((line_num,line,sub_matches))
+            } else {
+                None
+            }
         })
         .collect()
 }
diff --git a/src/searcher/mod.rs b/src/searcher/mod.rs
index 5c99f5a..243f1e8 100644
--- a/src/searcher/mod.rs
+++ b/src/searcher/mod.rs
@@ -6,6 +6,12 @@ pub use filter::{ should_skip_dir, is_valid_extension };
 
 pub struct FileResult {
     pub path_name: String,
-    pub matches: Vec<(usize, String)>,
     pub line_count: usize,
+    pub matches: Vec<MatchLine>,
+}
+
+pub struct MatchLine {
+    pub line_num: usize,
+    pub content: String,
+    pub sub_matches: Vec<(usize, usize)>
 }