diff --git a/csv/Cargo.lock b/csv/Cargo.lock
new file mode 100644
index 0000000..316b79e
--- /dev/null
+++ b/csv/Cargo.lock
@@ -0,0 +1,87 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "bstr"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2889e6d50f394968c8bf4240dc3f2a7eb4680844d27308f798229ac9d4725f41"
+dependencies = [
+ "lazy_static",
+ "memchr",
+ "regex-automata",
+ "serde",
+]
+
+[[package]]
+name = "byteorder"
+version = "1.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
+
+[[package]]
+name = "csv"
+version = "0.1.0"
+dependencies = [
+ "csv 1.1.3",
+]
+
+[[package]]
+name = "csv"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00affe7f6ab566df61b4be3ce8cf16bc2576bca0963ceb0955e45d514bf9a279"
+dependencies = [
+ "bstr",
+ "csv-core",
+ "itoa",
+ "ryu",
+ "serde",
+]
+
+[[package]]
+name = "csv-core"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b2466559f260f48ad25fe6317b3c8dac77b5bdb5763ac7d9d6103530663bc90"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "itoa"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8b7a7c0c47db5545ed3fef7468ee7bb5b74691498139e4b3f6a20685dc6dd8e"
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "memchr"
+version = "2.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
+
+[[package]]
+name = "regex-automata"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae1ded71d66a4a97f5e961fd0cb25a5f366a42a41570d16a763a69c092c26ae4"
+dependencies = [
+ "byteorder",
+]
+
+[[package]]
+name = "ryu"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed3d612bc64430efeb3f7ee6ef26d590dce0c43249217bddc62112540c7941e1"
+
+[[package]]
+name = "serde"
+version = "1.0.106"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36df6ac6412072f67cf767ebbde4133a5b2e88e76dc6187fa7104cd16f783399"
diff --git a/csv/Cargo.toml b/csv/Cargo.toml
new file mode 100644
index 0000000..236d3b4
--- /dev/null
+++ b/csv/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "csv"
+version = "0.1.0"
+authors = ["Hatter Jiang <jht5945@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+csv = "1.1.3"
+
diff --git a/csv/samle.csv b/csv/samle.csv
new file mode 100644
index 0000000..cfa20f8
--- /dev/null
+++ b/csv/samle.csv
@@ -0,0 +1,2 @@
+a,b
+1,2
diff --git a/csv/src/main.rs b/csv/src/main.rs
new file mode 100644
index 0000000..c83182c
--- /dev/null
+++ b/csv/src/main.rs
@@ -0,0 +1,21 @@
+use std::error::Error;
+use std::io;
+use std::process;
+
+fn example() -> Result<(), Box<dyn Error>> {
+    let mut rdr = csv::Reader::from_reader(io::stdin());
+    for result in rdr.records() {
+        // Result<StringRecord, Error>
+        let record = result?;
+        println!("{:?}", record);
+    }
+    Ok(())
+}
+
+// https://crates.io/crates/csv
+fn main() {
+    if let Err(err) = example() {
+        println!("error running example: {}", err);
+        process::exit(1);
+    }
+}
\ No newline at end of file