diff --git a/README.md b/README.md
index 85b831f..f0ec4ec 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,9 @@
 # orderrpc
 
-订单rpc
\ No newline at end of file
+订单rpc
+
+## 自动生成PB文件
+
+~~~
+protoc --go_out=./ order.proto
+~~~
diff --git a/cancel.go b/cancel.go
new file mode 100644
index 0000000..d71ca31
--- /dev/null
+++ b/cancel.go
@@ -0,0 +1,75 @@
+package order
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"log"
+	"strconv"
+	"strings"
+	"time"
+
+	"git.tetele.net/tgo/crypter"
+
+	"github.com/golang/protobuf/proto"
+)
+
+type OrderCancelRes struct {
+	Success bool
+}
+
+func Cancel(dbname, site_id string, order_id string, url ...string) (*OrderCancelRes, error) {
+
+	conn, err := rpc_server_conn(url...)
+	if err != nil {
+		return nil, err
+	}
+	defer conn.Close()
+
+	data := map[string]string{
+		"dbname":   dbname,
+		"site_id":  site_id,
+		"order_id": order_id,
+	}
+
+	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 := &CreateRequest{
+		proto.String(encryData),
+		proto.String(now),
+		proto.String(sign),
+		nil}
+
+	res := &CreateResponse{}
+
+	err = conn.Cancel(req, res)
+
+	if err != nil {
+		return nil, err
+	}
+
+	res_data, err := HandleResponse(res)
+
+	var res_arr OrderCancelRes
+
+	err = json.Unmarshal([]byte(res_data_de), &res_arr)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &res_arr, nil
+
+}
diff --git a/common.go b/common.go
new file mode 100644
index 0000000..4a8eae8
--- /dev/null
+++ b/common.go
@@ -0,0 +1,54 @@
+package order
+
+const DES_KEY = "ordernew"
+
+func rpc_server_conn(url ...string) (*OrderServiceClient, error) {
+
+	var order_rpc_url string = "127.0.0.1:7973"
+	if len(url) > 0 && url[0] != "" {
+		order_rpc_url = url[0]
+	}
+
+	conn, _, err := DialOrderService("tcp", order_rpc_url)
+	if err != nil {
+		return nil, err
+	}
+
+	return conn, nil
+}
+
+/**
+ * 处理返回结果
+ */
+func HandleResponse(res *CreateResponse) (string, error) {
+
+	res_data := res.GetData()
+
+	if res_data == "" {
+
+		return nil, errors.New("未收到收据")
+	}
+
+	time_int64, err := strconv.ParseInt(res.GetTime(), 10, 64)
+	if err != nil {
+		return nil, err
+	}
+
+	now_int64 := time.Now().Unix()
+
+	if now_int64-time_int64 > 10 || time_int64-now_int64 > 10 {
+		//时间误差前后10秒，返回
+		return nil, errors.New("返回时间错误")
+	}
+
+	check_sign := CheckSign(res.GetSign(), res_data, res.GetTime())
+	if !check_sign {
+		return nil, errors.New("返回数据签名错误")
+	}
+
+	//解密
+	res_data_de := crypter.DesDe(res_data, "ordernew")
+
+	return res_data_de
+
+}
diff --git a/order.pb.go b/order.pb.go
index b03b3aa..88ac4ea 100644
--- a/order.pb.go
+++ b/order.pb.go
@@ -100,6 +100,7 @@ func init() {
 type OrderService interface {
 	Create(in *CreateRequest, out *CreateResponse) error
 	CreateByCart(in *CreateRequest, out *CreateResponse) error
+	Cancel(in *CreateRequest, out *CreateResponse) error
 }
 
 // AcceptOrderServiceClient accepts connections on the listener and serves requests
@@ -177,6 +178,9 @@ func (c *OrderServiceClient) Create(in *CreateRequest, out *CreateResponse) erro
 func (c *OrderServiceClient) CreateByCart(in *CreateRequest, out *CreateResponse) error {
 	return c.Call("OrderService.CreateByCart", in, out)
 }
+func (c *OrderServiceClient) Cancel(in *CreateRequest, out *CreateResponse) error {
+	return c.Call("OrderService.Cancel", in, out)
+}
 
 // DialOrderService connects to an OrderService at the specified network address.
 func DialOrderService(network, addr string) (*OrderServiceClient, *rpc.Client, error) {
diff --git a/order.proto b/order.proto
index 68f0a1d..4cf54b3 100644
--- a/order.proto
+++ b/order.proto
@@ -19,4 +19,5 @@ message CreateResponse {
 service OrderService {
     rpc create (CreateRequest) returns (CreateResponse);    // 创建订单
     rpc createByCart (CreateRequest) returns (CreateResponse);    // 创建订单
+    rpc cancel (CreateRequest) returns (CreateResponse);    // 取消订单
 }
\ No newline at end of file
diff --git a/sign.go b/sign.go
new file mode 100644
index 0000000..e69de29