diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..77c6356
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+.idea/
+.vscode/
+.devcontainer/
diff --git a/README.md b/README.md
index 6c9c5e8..986b879 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,2 @@
-# tipdw
\ No newline at end of file
+# tipdw
+Golang 腾讯IP定位库
\ No newline at end of file
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..bc6affa
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module github.com/xiaoqidun/tipdw
+
+go 1.17
diff --git a/tipdw.go b/tipdw.go
new file mode 100644
index 0000000..3c2b53a
--- /dev/null
+++ b/tipdw.go
@@ -0,0 +1,72 @@
+package tipdw
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"time"
+)
+
+var client = &http.Client{Timeout: 5 * time.Second}
+
+type Body struct {
+	Status  int    `json:"status"`
+	Message string `json:"message"`
+	Result  Result `json:"result"`
+}
+
+type Result struct {
+	IP       string   `json:"ip"`
+	AdInfo   AdInfo   `json:"ad_info"`
+	Location Location `json:"location"`
+}
+
+type AdInfo struct {
+	Nation   string `json:"nation"`
+	Province string `json:"province"`
+	City     string `json:"city"`
+	District string `json:"district"`
+	Adcode   int    `json:"adcode"`
+}
+
+type Location struct {
+	Lat float64 `json:"lat"`
+	Lng float64 `json:"lng"`
+}
+
+// QueryIP 使用腾讯位置服务查询IP
+func QueryIP(sk string, key string, ip string) (result Result, err error) {
+	arg := &reqLBS{
+		SK:   sk,
+		Path: "/ws/location/v1/ip",
+		Args: map[string]string{
+			"ip":  ip,
+			"key": key,
+		},
+	}
+	req, err := http.NewRequest(http.MethodGet, fmt.Sprintf("%s?%s", "https://apis.map.qq.com/ws/location/v1/ip", arg.Encode()), nil)
+	if err != nil {
+		return
+	}
+	resp, err := client.Do(req)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return
+	}
+	var bodyUnmarshal Body
+	err = json.Unmarshal(body, &bodyUnmarshal)
+	if err != nil {
+		return
+	}
+	if bodyUnmarshal.Status != 0 {
+		err = fmt.Errorf("resp code is %d, body is %s", bodyUnmarshal.Status, body)
+		return
+	}
+	result = bodyUnmarshal.Result
+	return
+}
diff --git a/tipdw_util.go b/tipdw_util.go
new file mode 100644
index 0000000..934d4de
--- /dev/null
+++ b/tipdw_util.go
@@ -0,0 +1,43 @@
+package tipdw
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"fmt"
+	"net/url"
+	"sort"
+	"strings"
+)
+
+type reqLBS struct {
+	SK   string
+	Path string
+	Args map[string]string
+}
+
+func (r *reqLBS) Encode() string {
+	r.Signature()
+	req := url.Values{}
+	for k, v := range r.Args {
+		req.Set(k, v)
+	}
+	return req.Encode()
+}
+
+func (r *reqLBS) Signature() {
+	if r.Args == nil {
+		r.Args = make(map[string]string)
+	}
+	var keys []string
+	for k := range r.Args {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	var keyValue []string
+	for i := 0; i < len(keys); i++ {
+		keyValue = append(keyValue, fmt.Sprintf("%s=%s", keys[i], r.Args[keys[i]]))
+	}
+	signStr := r.Path + "?" + strings.Join(keyValue, "&") + r.SK
+	signMd5 := md5.Sum([]byte(signStr))
+	r.Args["sig"] = hex.EncodeToString(signMd5[:])
+}