diff --git a/README.md b/README.md
index 4d487475..8a8372f4 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,7 @@ However the C version has too few functions, and the js version is too big and t
 - Interactive query
 - Offline query
 - Both ipv4 and ipv6 supported
+- Multilingual support
 - CDN provider query
 - Full platform support
 - Color print
@@ -193,7 +194,7 @@ Flags:
 Use "nali [command] --help" for more information about a command.
 ```
 
-### Update chunzhen IP database
+### Update database
 
 ```
 $ nali update
@@ -201,9 +202,9 @@ $ nali update
 2020/07/17 12:54:05 已将最新的纯真 IP 库保存到本地 /root/.nali/qqwry.dat
 ```
 
-### Use other database
+### Select database
 
-Set environment variables `NALI_DB`
+Users can specify which database to use， set environment variables `NALI_DB_IP4`, `NALI_DB_IP6` or both.
 
 supported database:
 
@@ -216,21 +217,21 @@ supported database:
 ##### Use geoip db
 
 ```
-set NALI_DB=geoip
+set NALI_DB_IP4=geoip
 
 or use powershell
 
-$env:NALI_DB="geoip"
+$env:NALI_DB_IP4="geoip"
 ```
 
 ##### Use ipip db
 
 ```
-set NALI_DB=ipip
+set NALI_DB_IP6=ipip
 
 or use powershell
 
-$env:NALI_DB="ipip"
+$env:NALI_DB_IP6="ipip"
 ```
 
 #### Linux
@@ -238,13 +239,24 @@ $env:NALI_DB="ipip"
 ##### Use geoip db
 
 ```
-export NALI_DB=geoip
+export NALI_DB_IP4=geoip
 ```
 
 ##### Use ipip db
 
 ```
-export NALI_DB=ipip
+export NALI_DB_IP6=ipip
+```
+
+### Multilingual support
+
+Specify the language to be used by modifying the environment variable `NALI_LANG`, when using a non-Chinese language only the GeoIP2 database is supported
+
+The values that can be set for this parameter can be found in the list of supported databases for GeoIP2
+
+```
+# NALI_LANG=en nali 1.1.1.1
+1.1.1.1 [Australia]
 ```
 
 ### Change database directory
diff --git a/README_zh-CN.md b/README_zh-CN.md
index 199e22a1..91fb40a4 100644
--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -35,8 +35,10 @@
 - 支持管道处理
 - 支持交互式查询
 - 同时支持IPv4和IPv6
+- 支持多语言
 - 查询完全离线
 - 全平台支持
+- 支持彩色输出
 
 ## 安装
 
@@ -159,28 +161,6 @@ Address: 2a00:1450:400e:809::200e [荷兰Amsterdam Google Inc. 服务器网段]
 
 因为 CDN 服务通常使用 CNAME 的域名解析方式，所以推荐与 `nslookup` 或者 `dig` 配合使用，在已经知道 CNAME 后可单独使用
 
-#### 只查询 CDN 服务提供商
-
-```
-$ nslookup www.gov.cn | nali cdn
-Server:         127.0.0.53
-Address:        127.0.0.53#53
-
-Non-authoritative answer:
-www.gov.cn      canonical name = www.gov.cn.bsgslb.cn [白山云 CDN].
-www.gov.cn.bsgslb.cn [白山云 CDN]       canonical name = zgovweb.v.bsgslb.cn [白山云 CDN].
-Name:   zgovweb.v.bsgslb.cn [白山云 CDN]
-Address: 185.232.56.148
-Name:   zgovweb.v.bsgslb.cn [白山云 CDN]
-Address: 185.232.56.147
-Name:   zgovweb.v.bsgslb.cn [白山云 CDN]
-Address: 2001:428:6402:21b::6
-Name:   zgovweb.v.bsgslb.cn [白山云 CDN]
-Address: 2001:428:6402:21b::5
-```
-
-#### 查询所有信息
-
 ```
 $ nslookup www.gov.cn | nali
 Server:         127.0.0.53 [局域网 IP]
@@ -197,14 +177,6 @@ Name:   zgovweb.v.bsgslb.cn [白山云 CDN]
 Address: 2001:428:6402:21b::6 [美国Louisiana州Monroe Qwest Communications Company, LLC (CenturyLink)]
 ```
 
-#### 单独使用
-
-需要提前查询到 CNAME 域名
-
-```
-$ nali cdn cdn.somecdncname.com
-```
-
 ## 用户交互
 
 ### 查看帮助
@@ -216,9 +188,7 @@ Usage:
   nali [command]
 
 Available Commands:
-  cdn         Query cdn service provider
   help        Help about any command
-  parse       Query IP information
   update      update chunzhen ip database
 
 Flags:
@@ -228,7 +198,7 @@ Flags:
 Use "nali [command] --help" for more information about a command.
 ```
 
-### 更新纯真数据库
+### 更新数据库
 
 ```
 $ nali update
@@ -236,35 +206,36 @@ $ nali update
 2020/07/17 12:54:05 已将最新的纯真 IP 库保存到本地 /root/.nali/qqwry.dat
 ```
 
-### 使用 Geoip2 数据库
+### 自选数据库
 
-需要设置环境变量： `NALI_DB`
+用户可以指定使用哪个数据库，需要设置环境变量： `NALI_DB_IP4`、`NALI_DB_IP6` 或者两个同时设置
 
 支持的变量内容:
 
 - Geoip2 `['geoip', 'geoip2', 'geo']`
 - Chunzhen `['chunzhen', 'qqip', 'qqwry']`
+- IPIP `['ipip', 'ipipfree', 'ipip.net']`
 
 #### Windows平台
 
 ##### 使用geoip数据库
 
 ```
-set NALI_DB=geoip
+set NALI_DB_IP4=geoip
 
 或者使用 powershell
 
-$env:NALI_DB="geoip"
+$env:NALI_DB_IP4="geoip"
 ```
 
 ##### 使用ipip数据库
 
 ```
-set NALI_DB=ipip
+set NALI_DB_IP6=ipip
 
 或者使用 powershell
 
-$env:NALI_DB="ipip"
+$env:NALI_DB_IP6="ipip"
 ```
 
 #### Linux平台
@@ -272,13 +243,24 @@ $env:NALI_DB="ipip"
 ##### 使用geoip数据库
 
 ```
-export NALI_DB=geoip
+export NALI_DB_IP4=geoip
 ```
 
 ##### 使用ipip数据库
 
 ```
-export NALI_DB=ipip
+export NALI_DB_IP4=ipip
+```
+
+### 多语言支持
+
+通过修改环境变量 `NALI_LANG` 来指定使用的语言，当使用非中文语言时仅支持GeoIP2这个数据库
+
+该参数可设置的值见 GeoIP2 这个数据库的支持列表
+
+```
+# NALI_LANG=en nali 1.1.1.1
+1.1.1.1 [Australia]
 ```
 
 ### 更换数据库目录
diff --git a/internal/db/db.go b/internal/db/db.go
index 48d68219..6d6ae186 100644
--- a/internal/db/db.go
+++ b/internal/db/db.go
@@ -1,8 +1,13 @@
 package db
 
 import (
+	"os"
 	"path/filepath"
 
+	"github.com/zu1k/nali/pkg/ipip"
+
+	"github.com/zu1k/nali/pkg/geoip"
+
 	"github.com/zu1k/nali/internal/constant"
 	"github.com/zu1k/nali/pkg/cdn"
 	"github.com/zu1k/nali/pkg/dbif"
@@ -16,8 +21,29 @@ var (
 	GeoLite2CityPath = filepath.Join(constant.HomePath, "GeoLite2-City.mmdb")
 	IPIPFreePath     = filepath.Join(constant.HomePath, "ipipfree.ipdb")
 	CDNPath          = filepath.Join(constant.HomePath, "cdn.json")
+
+	Language       = "zh-CN"
+	IPv4DBSelected = ""
+	IPv6DBSelected = ""
 )
 
+func init() {
+	lang := os.Getenv("NALI_LANG")
+	if lang != "" {
+		Language = lang
+	}
+
+	ipv4DB := os.Getenv("NALI_DB_IP4")
+	if ipv4DB != "" {
+		IPv4DBSelected = ipv4DB
+	}
+
+	ipv6DB := os.Getenv("NALI_DB_IP6")
+	if ipv6DB != "" {
+		IPv6DBSelected = ipv6DB
+	}
+}
+
 func GetDB(typ dbif.QueryType) (db dbif.DB) {
 	if db, found := dbCache[typ]; found {
 		return db
@@ -25,21 +51,61 @@ func GetDB(typ dbif.QueryType) (db dbif.DB) {
 
 	switch typ {
 	case dbif.TypeIPv4:
-		db = qqwry.NewQQwry(QQWryPath)
+		if IPv4DBSelected != "" {
+			db = GetIPDBbyName(IPv4DBSelected)
+		} else {
+			if Language == "zh-CN" {
+				db = qqwry.NewQQwry(QQWryPath)
+			} else {
+				db = geoip.NewGeoIP(GeoLite2CityPath)
+			}
+		}
 	case dbif.TypeIPv6:
-		db = zxipv6wry.NewZXwry(ZXIPv6WryPath)
-		// geoip2.NewGeoIP(GeoLite2CityPath)
-		// ipip.NewIPIPFree(IPIPFreePath)
+		if IPv6DBSelected != "" {
+			db = GetIPDBbyName(IPv6DBSelected)
+		} else {
+			if Language == "zh-CN" {
+				db = zxipv6wry.NewZXwry(ZXIPv6WryPath)
+			} else {
+				geoip.NewGeoIP(GeoLite2CityPath)
+			}
+		}
 	case dbif.TypeDomain:
 		db = cdn.NewCDN(CDNPath)
 	default:
 		panic("Query type not supported!")
 	}
+
+	dbCache[typ] = db
 	return
 }
 
+func GetIPDBbyName(name string) (db dbif.DB) {
+	switch name {
+	case "geo", "geoip", "geoip2":
+		return geoip.NewGeoIP(GeoLite2CityPath)
+	case "chunzhen", "qqip", "qqwry":
+		return qqwry.NewQQwry(QQWryPath)
+	case "ipip", "ipipfree", "ipip.net":
+		return ipip.NewIPIPFree(IPIPFreePath)
+	default:
+		return qqwry.NewQQwry(QQWryPath)
+	}
+}
+
 func Update() {
 	qqwry.Download(QQWryPath)
 	zxipv6wry.Download(ZXIPv6WryPath)
 	cdn.Download(CDNPath)
 }
+
+func Find(typ dbif.QueryType, query string) string {
+	if result, found := queryCache[query]; found {
+		return result
+	}
+	result, err := GetDB(typ).Find(query, Language)
+	if err != nil {
+		return ""
+	}
+	return result.String()
+}
diff --git a/internal/db/find.go b/internal/db/find.go
deleted file mode 100644
index 7e41cd32..00000000
--- a/internal/db/find.go
+++ /dev/null
@@ -1,17 +0,0 @@
-package db
-
-import (
-	"github.com/zu1k/nali/pkg/dbif"
-)
-
-func Find(typ dbif.QueryType, query string) string {
-	if result, found := queryCache[query]; found {
-		return result
-	}
-	result, err := GetDB(typ).Find(query)
-	if err != nil {
-		//log.Printf("Query [%s] error: %s\n", query, err)
-		return ""
-	}
-	return result.String()
-}
diff --git a/internal/db/ipdb.go b/internal/db/ipdb.go
deleted file mode 100644
index a2f77998..00000000
--- a/internal/db/ipdb.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package db
-
-import (
-	"os"
-	"strings"
-)
-
-// ip database type
-type IPDBType int
-
-const (
-	GEOIP2 = iota // geoip2
-	QQIP          // chunzhen
-	IPIP          // ipip.net
-)
-
-func GetIPDBType() IPDBType {
-	dbname := os.Getenv("NALI_DB")
-	dbname = strings.ToLower(dbname)
-	switch dbname {
-	case "geo", "geoip", "geoip2":
-		return GEOIP2
-	case "chunzhen", "qqip", "qqwry":
-		return QQIP
-	case "ipip", "ipipfree", "ipip.net":
-		return IPIP
-	default:
-		return QQIP
-	}
-}
diff --git a/pkg/geoip/geoip.go b/pkg/geoip/geoip.go
index 75426f97..1f75b05d 100644
--- a/pkg/geoip/geoip.go
+++ b/pkg/geoip/geoip.go
@@ -42,9 +42,16 @@ func (g GeoIP) Find(query string, params ...string) (result fmt.Stringer, err er
 		return
 	}
 
+	lang := "zh-CN"
+	if len(params) > 0 {
+		if _, ok := record.Country.Names[params[0]]; ok {
+			lang = params[0]
+		}
+	}
+
 	result = Result{
-		Country: record.Country.Names["zh-CN"],
-		City:    record.City.Names["zh-CN"],
+		Country: record.Country.Names[lang],
+		City:    record.City.Names[lang],
 	}
 	return
 }