diff --git a/sdk/api_authentication_caller.go b/sdk/api_authentication_caller.go
index b675d51..a8be41a 100644
--- a/sdk/api_authentication_caller.go
+++ b/sdk/api_authentication_caller.go
@@ -41,13 +41,13 @@ func (client *DingTalkClient) GetUserInfoFromAdmin(code string) (GetUserInfoFrom
 
 //服务端通过临时授权码获取授权用户的个人信息
 //https://open-doc.dingtalk.com/microapp/serverapi3/vmzkak
-func (s *DingTalkSDK) GetUserInfoByCode(code string) (GetUserInfoByCodeResp, error) {
+func (client *DingTalkOauthClient) GetUserInfoByCode(code string) (GetUserInfoByCodeResp, error) {
 	params := map[string]string{
 		"tmp_auth_code": code,
 	}
 	paramsJson, _ := json.ToJson(params)
-	
-	body, err := ExcuteOapi("https://oapi.dingtalk.com/sns/getuserinfo_bycode", s.SuiteKey, s.SuiteSecret, "_", "", paramsJson)
+
+	body, err := ExcuteOapi("https://oapi.dingtalk.com/sns/getuserinfo_bycode", client.OauthAppId, client.OauthAppSecret, paramsJson)
 	resp := GetUserInfoByCodeResp{}
 	if err != nil {
 		return resp, err
diff --git a/sdk/api_authentication_test.go b/sdk/api_authentication_test.go
index ca451ac..ba7f542 100644
--- a/sdk/api_authentication_test.go
+++ b/sdk/api_authentication_test.go
@@ -16,3 +16,9 @@ func TestGetUserInfoFromAdmin(t *testing.T) {
 	t.Log(json.ToJson(resp))
 	t.Log(err)
 }
+
+func TestDingTalkSDK_GetUserInfoByCode(t *testing.T) {
+	resp, err := NewDingTalkOauthClient().GetUserInfoByCode("492b19afde343b559cc53f9b096adfe1")
+	t.Log(json.ToJson(resp))
+	t.Log(err)
+}
diff --git a/sdk/sdk.go b/sdk/sdk.go
index d823bc9..b0045b1 100644
--- a/sdk/sdk.go
+++ b/sdk/sdk.go
@@ -28,6 +28,18 @@ type DingTalkClient struct {
 	AgentId     int64
 }
 
+type DingTalkOauthClient struct {
+	OauthAppId     string
+	OauthAppSecret string
+}
+
+func NewDingTalkOauthClient() *DingTalkOauthClient {
+	return &DingTalkOauthClient{
+		OauthAppId:     os.Getenv("OAUTH_APP_ID"),
+		OauthAppSecret: os.Getenv("OAUTH_APP_SECRET"),
+	}
+}
+
 func NewSDK() *DingTalkSDK {
 	appId, err := strconv.ParseInt(os.Getenv("APP_ID"), 10, 64)
 	if err != nil {
@@ -98,28 +110,21 @@ func (corp *Corp) CreateDingTalkClient() (*DingTalkClient, error) {
 	return NewDingTalkClient(tokenInfo.AccessToken, authInfo.AuthInfo.Agent[0].AgentId), nil
 }
 
-func ExcuteOapi(url string, accessKey string, accessSecret string, suiteTicket string, corpId string, body string) (string, error) {
+func ExcuteOapi(url string, oauthAppId string, oauthAppSecret string, body string) (string, error) {
 	timestamp := time.Now().UnixNano() / 1e6
 	nativeSignature := strconv.FormatInt(timestamp, 10)
-	if suiteTicket != "" {
-		nativeSignature += "\n" + suiteTicket
-	}
 
-	afterHmacSHA256 := encrypt.SHA256(nativeSignature, accessSecret)
+	oauthAppId = "dingoayheivmu34mylzrzg"
+	oauthAppSecret = "PeQfl0uBtO3VLr-Feix5cIEWM9Oo81Mhec-SRiO2SPiEPU18fg0YZaB7fHXVkX3U"
+	afterHmacSHA256 := encrypt.SHA256(nativeSignature, oauthAppSecret)
 	afterBase64 := encrypt.BASE64(afterHmacSHA256)
 	afterUrlEncode := encrypt.URLEncode(afterBase64)
 
 	params := map[string]string{
 		"timestamp": strconv.FormatInt(timestamp, 10),
-		"accessKey": accessKey,
+		"accessKey": oauthAppId,
 		"signature": afterUrlEncode,
 	}
-	if suiteTicket != "" {
-		params["suiteTicket"] = suiteTicket
-	}
-	if corpId != "" {
-		params["corpId"] = corpId
-	}
 
 	return http.Post(url, params, body)
 }