diff --git a/jtt_tool/jtt_client.go b/jtt_tool/jtt_client.go
new file mode 100644
index 0000000..5bf8dae
--- /dev/null
+++ b/jtt_tool/jtt_client.go
@@ -0,0 +1,201 @@
+package jtt_tool
+
+import (
+	"bytes"
+	"crypto"
+	"crypto/md5"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/json"
+	"encoding/pem"
+	"fmt"
+	"github.com/pkg/errors"
+	"io"
+	"log"
+	"net/http"
+	"reflect"
+	"sort"
+	"strings"
+	"time"
+)
+
+type JttClient struct {
+	AppId      string
+	ApiUrl     string
+	PublicKey  string
+	PrivateKey string
+}
+
+func NewJttClient(appId, apiUrl, publicKey, privateKey string) *JttClient {
+	return &JttClient{
+		AppId:      appId,
+		ApiUrl:     apiUrl,
+		PublicKey:  publicKey,
+		PrivateKey: privateKey,
+	}
+}
+
+func (j *JttClient) FindUserForTokenMessage(address string) (res *FindUserForTokenMessageRes, err error) {
+	if address == "" {
+		return nil, fmt.Errorf("address is empty")
+	}
+	fmt.Println("address", address)
+
+	paramMap := make(map[string]any)
+
+	paramMap["appId"] = j.AppId
+	paramMap["timestamp"] = time.Now().Unix()
+	paramMap["publicKey"] = j.PublicKey
+	paramMap["address"] = address
+
+	postRes, err := j.JttPost("/findUserForTokenMessage", paramMap)
+	if err != nil {
+		return
+	}
+
+	err = json.Unmarshal(postRes, &res)
+	if err != nil {
+		err = fmt.Errorf("转换FindUserForTokenMessageRes结构体失败: %s", string(postRes))
+		return
+	}
+
+	if res == nil || res.Code != 200 {
+		err = fmt.Errorf("查询交易所数据失败: %w, res: %+v , 地址:%s", err, res, address)
+		return
+	}
+
+	return
+
+}
+
+type FindUserForTokenMessageRes struct {
+	Code int   `json:"code"`
+	Data *Data `json:"data"`
+}
+
+type Data struct {
+	UserTokenList []*UserToken `json:"userTokenList"`
+}
+
+type UserToken struct {
+	Code          int     `json:"code"`
+	Mes           string  `json:"mes"`
+	TokenNum      float64 `json:"tokenNum"`
+	WalletAddress string  `json:"walletAddress"`
+}
+
+func (j *JttClient) JttPost(url string, paramMap map[string]any) (res []byte, err error) {
+
+	bodyByte, _ := json.Marshal(paramMap)
+
+	req, err := http.NewRequest(http.MethodPost, j.ApiUrl+url, bytes.NewBuffer(bodyByte))
+	if err != nil {
+		return
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+	sign, err := j.ToSign(paramMap)
+	if err != nil {
+		return
+	}
+	paramMap["sign"] = sign
+
+	// 创建 HTTP 客户端
+	client := &http.Client{}
+
+	// 发送请求
+	resp, err := client.Do(req)
+	//log.Printf("WPSPost resp: %+v\n", resp)
+	if err != nil {
+		log.Printf("发送请求失败: %+v\n", err)
+		return
+	}
+	defer func(Body io.ReadCloser) {
+		_ = Body.Close()
+	}(resp.Body)
+
+	// 读取响应体
+	res, err = io.ReadAll(resp.Body)
+	if err != nil {
+		return
+	}
+
+	fmt.Printf("res: %s\n", string(res))
+
+	if !json.Valid(res) {
+		return nil, errors.New("响应体不是有效的JSON格式")
+	}
+
+	return
+}
+
+func (s *JttClient) ToSign(reqData map[string]interface{}) (sign []byte, errs error) {
+	sortedStr, err := s.GetSortedStr(reqData)
+	if err != nil {
+		return
+	}
+	privateKeyStr := "-----BEGIN PRIVATE KEY-----\r\n" + s.PrivateKey + "\r\n-----END PRIVATE KEY-----"
+	sign, err = s.Sign(sortedStr, privateKeyStr)
+	return
+}
+
+func (s *JttClient) Sign(signData string, privateKeyStr string) (sign []byte, errs error) {
+	hashedMessage := md5.Sum([]byte(signData))
+	if privateKeyStr == "" {
+		return nil, errors.New("private key is empty")
+	}
+
+	block, _ := pem.Decode([]byte(privateKeyStr))
+	privateKey, err := x509.ParsePKCS8PrivateKey(block.Bytes)
+	if err != nil {
+		return nil, err
+	}
+	sign, err = rsa.SignPKCS1v15(rand.Reader, privateKey.(*rsa.PrivateKey), crypto.MD5, hashedMessage[:])
+	if err != nil {
+		return nil, err
+	}
+	sign = []byte(base64.StdEncoding.EncodeToString(sign))
+	return
+}
+
+func (s *JttClient) GetSortedStr(data any) (str string, err error) {
+	tmp := map[string]interface{}{}
+	if reflect.ValueOf(data).Kind() == reflect.Struct {
+		jsStr, _ := json.Marshal(data)
+		_ = json.Unmarshal(jsStr, &tmp)
+	} else {
+		ok := false
+		tmp, ok = data.(map[string]interface{})
+		if !ok {
+			err = errors.New("data type error")
+		}
+	}
+
+	keys := []string{}
+	for key := range tmp {
+		keys = append(keys, key)
+	}
+
+	sort.Strings(keys)
+	sortedParams := []string{}
+
+	for _, key := range keys {
+		value := tmp[key]
+		if key == "sign" {
+			continue
+		}
+
+		switch v := value.(type) {
+		case int, uint, int16, int32, int64:
+			sortedParams = append(sortedParams, fmt.Sprintf("%s=%d", key, v))
+		case float64, float32:
+			sortedParams = append(sortedParams, fmt.Sprintf("%s=%f", key, v))
+		default:
+			sortedParams = append(sortedParams, key+"="+value.(string))
+		}
+	}
+	str = strings.Join(sortedParams, "&")
+	return
+}
diff --git a/jtt_tool/jtt_client_test.go b/jtt_tool/jtt_client_test.go
new file mode 100644
index 0000000..4279f5b
--- /dev/null
+++ b/jtt_tool/jtt_client_test.go
@@ -0,0 +1,51 @@
+package jtt_tool
+
+import (
+	"log"
+	"testing"
+)
+
+func TestJttClient_FindUserForTokenMessage(t *testing.T) {
+	type fields struct {
+		AppId      string
+		ApiUrl     string
+		PublicKey  string
+		PrivateKey string
+	}
+	type args struct {
+		address string
+	}
+	tests := []struct {
+		name    string
+		fields  fields
+		args    args
+		wantRes *FindUserForTokenMessageRes
+		wantErr bool
+	}{
+		{
+			name:   "test1",
+			fields: fields{},
+			args: args{
+				address: "0x123456",
+			},
+		},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			h := &JttClient{
+				AppId:      test.fields.AppId,
+				ApiUrl:     test.fields.ApiUrl,
+				PublicKey:  test.fields.PublicKey,
+				PrivateKey: test.fields.PrivateKey,
+			}
+
+			gotRes, err := h.FindUserForTokenMessage(test.args.address)
+
+			log.Println(gotRes, err)
+
+			if (err != nil) != test.wantErr {
+				t.Errorf("FindUserForTokenMessage() error = %v, wantErr %v", err, test.wantErr)
+			}
+		})
+	}
+}