diff --git a/README-ES.md b/README-ES.md
new file mode 100644
index 0000000..b19e498
--- /dev/null
+++ b/README-ES.md
@@ -0,0 +1,121 @@
+# id-validator
+
+[简体中文](README.md) | [ENGLISH](README-ES.md)
+
+> China ID number verification.
+
+## Features
+
+* China ID number verification
+* Get ID number information
+* Upgrade 15-digit ID number to 18
+* Forged ID number that meets the verification
+
+## Requirement
+
+* Go >= 1.11
+
+## Installation
+
+``` shell script
+$ go get -u github.com/guanguans/id-validator
+```
+
+## Usage
+
+This is just a quick introduction, view the [GoDoc](https://godoc.org/github.com/guanguans/id-validator) for details.
+
+Let's start with a trivial example:
+
+``` go
+package main
+
+import (
+	idvalidator "github.com/guanguans/id-validator"
+	"gopkg.in/ffmt.v1"
+)
+
+func main() {
+
+	// 验证身份证号合法性
+	ffmt.P(idvalidator.IsValid("440308199901101512"))  // 大陆居民身份证18位
+	ffmt.P(idvalidator.IsValid("610104620927690"))     // 大陆居民身份证15位
+	ffmt.P(idvalidator.IsValid("810000199408230021"))  // 港澳居民居住证18位
+	ffmt.P(idvalidator.IsValid("830000199201300022"))  // 台湾居民居住证18位
+
+	// 获取身份证号信息
+	ffmt.P(idvalidator.GetInfo("440308199901101512"))
+	// []interface {}[
+	// 	github.com/guanguans/id-validator.IdInfo{          // 身份证号信息
+	// 		AddressCode: int(440308)                           // 地址码
+	// 		Abandoned:   int(0)                                // 地址码是否废弃：1为废弃的，0为正在使用的
+	// 		Address:     string("广东省深圳市盐田区")             // 地址
+	// 		AddressTree: []string[                             // 省市区三级列表
+	//			string("广东省")                                    // 省
+	//			string("深圳市")                                    // 市
+	//			string("盐田区")                                    // 区
+	//		]
+	// 		Birthday:      <1999-01-10 00:00:00 +0000 UTC>     // 出生日期
+	// 		Constellation: string("摩羯座")                     // 星座
+	// 		ChineseZodiac: string("卯兔")                       // 生肖
+	// 		Sex:           int(1)                              // 性别：1为男性，0为女性
+	// 		Length:        int(18)                             // 号码长度
+	// 		CheckBit:      string("2")                         // 校验码
+	// 	}
+	// 	<nil>                                              // 错误信息
+	// ]
+
+	// 生成可通过校验的假身份证号
+	ffmt.P(idvalidator.FakeId()) // 随机生成
+	ffmt.P(idvalidator.FakeRequireId(true, "江苏省", "200001", 1)) // 生成出生于2000年1月江苏省的男性居民身份证
+
+	// 15位号码升级为18位
+	ffmt.P(idvalidator.UpgradeId("610104620927690"))
+	// []interface {}[
+	// 	string("610104196209276908") // 升级后号码
+	// 	<nil>                        // 错误信息
+	// ]
+}
+```
+
+## Testing
+
+``` bash
+$ go test
+```
+
+## Changelog
+
+Please see [CHANGELOG](CHANGELOG.md) for more information on what has changed recently.
+
+## Contributing
+
+Please see [CONTRIBUTING](.github/CONTRIBUTING.md) for details.
+
+## Security Vulnerabilities
+
+Please review [our security policy](../../security/policy) on how to report security vulnerabilities.
+
+## Credits
+
+* [guanguans](https://github.com/guanguans)
+* [All Contributors](../../contributors)
+
+## Related projects
+
+* [jxlwqq/id-validator](https://github.com/jxlwqq/id-validator), by jxlwqq
+* [jxlwqq/id-validator.py](https://github.com/jxlwqq/id-validator.py), by jxlwqq
+* [mc-zone/IDValidator](https://github.com/mc-zone/IDValidator), by mc-zone
+* [renyijiu/id_validator](https://github.com/renyijiu/id_validator), by renyijiu
+
+## Reference material
+
+* [People's Republic of China citizenship number](https://zh.wikipedia.org/wiki/中华人民共和国公民身份号码)
+* [Ministry of Civil Affairs of the People's Republic of China: Administrative division code](http://www.mca.gov.cn/article/sj/xzqh/)
+* [Historical data set of administrative division codes of the People's Republic of China](https://github.com/jxlwqq/address-code-of-china)
+* [Notice of the General Office of the State Council on Issuing the Measures for the Application and Issuance of Residence Permits for Hong Kong, Macao and Taiwan Residents](http://www.gov.cn/zhengce/content/2018-08/19/content_5314865.htm)
+* [Residence Permit for Hong Kong, Macao and Taiwan Residents](https://zh.wikipedia.org/wiki/港澳台居民居住证)
+
+## License
+
+The MIT License (MIT). Please see [License File](LICENSE) for more information.
diff --git a/README.md b/README.md
index 2097447..66287a4 100644
--- a/README.md
+++ b/README.md
@@ -1,29 +1,36 @@
 # id-validator
 
-> 中国身份证号验证、获取身份证号信息、升级 15 位身份证号为 18 位、伪造符合校验的身份证号。
+[简体中文](README.md) | [ENGLISH](README-ES.md)
+
+> 中国身份证号验证。
 
 [![Tests](https://github.com/guanguans/id-validator/workflows/Tests/badge.svg)](https://github.com/guanguans/id-validator/actions)
 [![gocover.io](https://gocover.io/_badge/github.com/guanguans/id-validator)](https://gocover.io/github.com/guanguans/id-validator)
 [![Go Report Card](https://goreportcard.com/badge/github.com/guanguans/id-validator)](https://goreportcard.com/report/github.com/guanguans/id-validator)
 [![GoDoc](https://godoc.org/github.com/guanguans/id-validator?status.svg)](https://godoc.org/github.com/guanguans/id-validator)
-[![GitHub release](https://img.shields.io/github/release/guanguans/id-validator.svg)](https://github.com/guanguans/id-validator/releases)
+[![GitHub release](https://img.shields.io/github/tag/guanguans/id-validator.svg)](https://github.com/guanguans/id-validator/releases)
 [![GitHub license](https://img.shields.io/github/license/guanguans/id-validator.svg)](https://github.com/guanguans/id-validator/blob/master/LICENSE)
 
-## Requirement
+## 功能
+
+* 中国身份证号验证
+* 获取身份证号信息
+* 升级 15 位身份证号为 18 位
+* 伪造符合校验的身份证号
+
+## 环境要求
 
 * Go >= 1.11
 
-## Installation
+## 安装
 
 ``` shell script
 $ go get -u github.com/guanguans/id-validator
 ```
 
-## Usage
+## 使用
 
-This is just a quick introduction, view the [GoDoc](https://godoc.org/github.com/guanguans/id-validator) for details.
-
-Let's start with a trivial example:
+这只是一个快速介绍, 请查看 [GoDoc](https://godoc.org/github.com/guanguans/id-validator) 获得详细信息。
 
 ``` go
 package main
@@ -76,35 +83,35 @@ func main() {
 }
 ```
 
-## Testing
+## 测试
 
 ``` bash
 $ go test
 ```
 
-## Changelog
+## 变更日志
 
-Please see [CHANGELOG](CHANGELOG.md) for more information on what has changed recently.
+请参阅 [CHANGELOG](CHANGELOG.md) 获取最近有关更改的更多信息。
 
-## Contributing
+## 贡献指南
 
-Please see [CONTRIBUTING](.github/CONTRIBUTING.md) for details.
+请参阅 [CONTRIBUTING](.github/CONTRIBUTING.md) 有关详细信息。
 
-## Security Vulnerabilities
+## 安全漏洞
 
-Please review [our security policy](../../security/policy) on how to report security vulnerabilities.
+请查看[我们的安全政策](../../security/policy)了解如何报告安全漏洞。
 
-## Credits
+## 贡献者
 
 * [guanguans](https://github.com/guanguans)
-* [All Contributors](../../contributors)
+* [所有贡献者](../../contributors)
 
 ## 相关项目
 
-* [PHP 版本](https://github.com/jxlwqq/id-validator)
-* [Python 版本](https://github.com/jxlwqq/id-validator.py)
-* [Ruby 版本](https://github.com/renyijiu/id_validator)
-* [JavaScript 版本](https://github.com/mc-zone/IDValidator)
+* [jxlwqq/id-validator](https://github.com/jxlwqq/id-validator)，jxlwqq
+* [jxlwqq/id-validator.py](https://github.com/jxlwqq/id-validator.py)，jxlwqq
+* [mc-zone/IDValidator](https://github.com/mc-zone/IDValidator)，mc-zone
+* [renyijiu/id_validator](https://github.com/renyijiu/id_validator)，renyijiu
 
 ## 参考资料
 
@@ -114,6 +121,6 @@ Please review [our security policy](../../security/policy) on how to report secu
 * [国务院办公厅关于印发《港澳台居民居住证申领发放办法》的通知](http://www.gov.cn/zhengce/content/2018-08/19/content_5314865.htm)
 * [港澳台居民居住证](https://zh.wikipedia.org/wiki/港澳台居民居住证)
 
-## License
+## 协议
 
-The MIT License (MIT). Please see [License File](LICENSE) for more information.
+MIT 许可证（MIT）。有关更多信息，请参见[协议文件](LICENSE)。