diff --git a/common.go b/common.go
index 3cc9cf5..72df163 100644
--- a/common.go
+++ b/common.go
@@ -67,6 +67,42 @@ type MiniAppOpenidRes struct {
 	WxApiRes
 }
 
+/**
+ * 获取公众号openid返回参数
+ */
+type MpOpenidRes struct {
+	AccessToken string
+	ExpiresIn	string
+	RefreshToken string
+	Openid		string
+	Scope		string
+}
+
+/**
+ * 获取公众号用户信息请求参数
+ */
+type MpUserInfoReq struct {
+	AccessToken		string
+	Openid			string
+	Lang			string
+}
+
+/**
+ * 根据用户access_token换取用户信息返回参数
+ */
+type MpUserInfoRes struct {
+	Openid		string
+	Nickname	string
+	Sex			string
+	Province	string
+	City		string
+	Country		string
+	Headimgurl	string
+	Privilege	string
+	Unionid		string
+}
+
+
 func rpc_server_conn(url ...string) (*WeixinRpcServiceClient, error) {
 
 	var wx_rpc_url string = "127.0.0.1:7969"
diff --git a/mp_open_id.client.go b/mp_open_id.client.go
new file mode 100644
index 0000000..ee5bc3e
--- /dev/null
+++ b/mp_open_id.client.go
@@ -0,0 +1,80 @@
+package weixinrpc
+
+import (
+	"encoding/json"
+	"log"
+	"strconv"
+	"time"
+
+	"git.tetele.net/tgo/crypter"
+
+	"github.com/golang/protobuf/proto"
+)
+
+func GetMpOpenId(appid, secret, js_code string, url ...string) (*MpOpenidRes, error) {
+
+	conn, err := rpc_server_conn(url...)
+	if err != nil {
+		return nil, err
+	}
+	defer conn.Close()
+
+	data := MiniAppOpenidReq{}
+	data.Appid = appid
+	data.Secret = secret
+	data.JsCode = js_code
+
+	data_json, err := json.Marshal(data)
+	if err != nil {
+		return nil, err
+	}
+
+	encryData := crypter.DesEn(string(data_json), DES_KEY)
+
+	now_int64 := time.Now().Unix()
+
+	now := strconv.FormatInt(now_int64, 10)
+
+	sign := Sign(encryData, now)
+
+	req := &Request{
+		proto.String(encryData),
+		proto.String(now),
+		proto.String(sign),
+		nil}
+
+	res := &Response{}
+
+	err = conn.GetMiniAppOpenid(req, res)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return HandleMpOpenid(res)
+
+}
+
+/**
+ * 处理返回结果
+ */
+func HandleMpOpenid(res *Response) (*MpOpenidRes, error) {
+
+	//解密
+	res_data_de, err := GetOrgData(res)
+
+	if err != nil {
+		return nil, err
+	}
+
+	var res_arr MpOpenidRes
+
+	err = json.Unmarshal([]byte(res_data_de), &res_arr)
+
+	if err != nil {
+		log.Println(err, res_data_de)
+		return nil, err
+	}
+
+	return &res_arr, nil
+}