diff --git a/.gitignore b/.gitignore
index f953780..396af34 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 .vscode/
 .devcontainer/
 assets/qqwry.dat
+assets/qqwry.ipdb
\ No newline at end of file
diff --git a/README.md b/README.md
index 3bad693..14033e7 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,8 @@ func main() {
 
 # IP数据库
 
-- [https://aite.xyz/share-file/qqwry/qqwry.dat](https://aite.xyz/share-file/qqwry/qqwry.dat)
+- DAT格式：[https://aite.xyz/share-file/qqwry/qqwry.dat](https://aite.xyz/share-file/qqwry/qqwry.dat)
+- IPDB格式：[https://aite.xyz/share-file/qqwry/qqwry.ipdb](https://aite.xyz/share-file/qqwry/qqwry.ipdb)
 
 # 编译说明
 
@@ -47,6 +48,11 @@ func main() {
 2. client和server需要go1.16的内嵌资源特性。
 3. 作为库使用，请直接引包，并不需要go1.16+才能编译。
 
+# 数据更新
+
+- 由于qqwry.dat缺乏更新，官方czdb格式又难以获得和分发，建议使用ipdb格式。
+- 这里的ipdb格式指metowolf提供的官方czdb格式转换而来的ipdb格式（纯真格式原版）。
+
 # 服务接口
 
 1. 自行根据需要调整server下源码。
@@ -57,6 +63,7 @@ func main() {
 
 - 感谢[纯真IP库](https://www.cz88.net/)一直坚持为大家提供免费IP数据库。
 - 感谢[yinheli](https://github.com/yinheli)的[qqwry](https://github.com/yinheli/qqwry)项目，为我提供纯真ip库解析算法参考。
+- 感谢[metowolf](https://github.com/metowolf)的[qqwry.ipdb](https://github.com/metowolf/qqwry.ipdb)项目，提供纯真czdb转ipdb数据库。
 
 # 授权说明
 
diff --git a/assets/assets.go b/assets/assets.go
index 0c022de..1beb4bd 100644
--- a/assets/assets.go
+++ b/assets/assets.go
@@ -4,3 +4,6 @@ import _ "embed"
 
 //go:embed qqwry.dat
 var QQWryDat []byte
+
+//go:embed qqwry.ipdb
+var QQWryIpdb []byte
diff --git a/client/client.go b/client/client.go
index 9d995af..aac7ea7 100644
--- a/client/client.go
+++ b/client/client.go
@@ -8,7 +8,7 @@ import (
 )
 
 func init() {
-	qqwry.LoadData(assets.QQWryDat)
+	qqwry.LoadData(assets.QQWryIpdb)
 }
 
 func main() {
diff --git a/go.mod b/go.mod
index 3d06870..a3150f1 100644
--- a/go.mod
+++ b/go.mod
@@ -3,3 +3,5 @@ module github.com/xiaoqidun/qqwry
 go 1.20
 
 require golang.org/x/text v0.21.0
+
+require github.com/ipipdotnet/ipdb-go v1.3.3
diff --git a/go.sum b/go.sum
index 0d8f5b2..099ed79 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,4 @@
+github.com/ipipdotnet/ipdb-go v1.3.3 h1:GLSAW9ypLUd6EF9QNK2Uhxew9Jzs4XMJ9gOZEFnJm7U=
+github.com/ipipdotnet/ipdb-go v1.3.3/go.mod h1:yZ+8puwe3R37a/3qRftXo40nZVQbxYDLqls9o5foexs=
 golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
 golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
diff --git a/qqwry.go b/qqwry.go
index a487b07..e800a35 100644
--- a/qqwry.go
+++ b/qqwry.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"encoding/binary"
 	"errors"
+	"github.com/ipipdotnet/ipdb-go"
 	"golang.org/x/text/encoding/simplifiedchinese"
 	"golang.org/x/text/transform"
 	"io"
@@ -16,9 +17,16 @@ import (
 var (
 	data          []byte
 	dataLen       uint32
+	ipdbCity      *ipdb.City
+	dataType      = dataTypeDat
 	locationCache = &sync.Map{}
 )
 
+const (
+	dataTypeDat  = 0
+	dataTypeIpdb = 1
+)
+
 const (
 	indexLen      = 7
 	redirectMode1 = 0x01
@@ -49,10 +57,22 @@ func gb18030Decode(src []byte) string {
 }
 
 // QueryIP 从内存或缓存查询IP
-func QueryIP(ipv4 string) (location *Location, err error) {
-	if v, ok := locationCache.Load(ipv4); ok {
+func QueryIP(ip string) (location *Location, err error) {
+	if v, ok := locationCache.Load(ip); ok {
 		return v.(*Location), nil
 	}
+	switch dataType {
+	case dataTypeDat:
+		return QueryIPDat(ip)
+	case dataTypeIpdb:
+		return QueryIPIpdb(ip)
+	default:
+		return nil, errors.New("data type not support")
+	}
+}
+
+// QueryIPDat 从dat查询IP，仅加载dat格式数据库时使用
+func QueryIPDat(ipv4 string) (location *Location, err error) {
 	ip := net.ParseIP(ipv4).To4()
 	if ip == nil {
 		return nil, errors.New("ip is not ipv4")
@@ -156,19 +176,39 @@ func QueryIP(ipv4 string) (location *Location, err error) {
 	return location, nil
 }
 
+// QueryIPIpdb 从ipdb查询IP，仅加载ipdb格式数据库时使用
+func QueryIPIpdb(ip string) (location *Location, err error) {
+	ret, err := ipdbCity.Find(ip, "CN")
+	if err != nil {
+		return
+	}
+	location = SplitResult(ret[0], ret[1], ip)
+	locationCache.Store(ip, location)
+	return location, nil
+}
+
 // LoadData 从内存加载IP数据库
 func LoadData(database []byte) {
+	if string(database[6:11]) == "build" {
+		dataType = dataTypeIpdb
+		loadCity, err := ipdb.NewCityFromBytes(database)
+		if err != nil {
+			panic(err)
+		}
+		ipdbCity = loadCity
+		return
+	}
 	data = database
 	dataLen = uint32(len(data))
 }
 
 // LoadFile 从文件加载IP数据库
 func LoadFile(filepath string) (err error) {
-	data, err = os.ReadFile(filepath)
+	body, err := os.ReadFile(filepath)
 	if err != nil {
 		return
 	}
-	dataLen = uint32(len(data))
+	LoadData(body)
 	return
 }
 
diff --git a/qqwry_test.go b/qqwry_test.go
index 5b7d7ed..365e042 100644
--- a/qqwry_test.go
+++ b/qqwry_test.go
@@ -5,7 +5,7 @@ import (
 )
 
 func init() {
-	if err := LoadFile("assets/qqwry.dat"); err != nil {
+	if err := LoadFile("assets/qqwry.ipdb"); err != nil {
 		panic(err)
 	}
 }
diff --git a/server/server.go b/server/server.go
index 0a30a75..6be73df 100644
--- a/server/server.go
+++ b/server/server.go
@@ -16,7 +16,7 @@ type resp struct {
 }
 
 func init() {
-	qqwry.LoadData(assets.QQWryDat)
+	qqwry.LoadData(assets.QQWryIpdb)
 }
 
 func main() {