diff --git a/library.go b/library.go
index 5f87300f..33f9d55b 100644
--- a/library.go
+++ b/library.go
@@ -1,5 +1,5 @@
 package go_library
 
 func Version() string {
-	return "1.0.159"
+	return "1.0.160"
 }
diff --git a/service/wechatpayapiv2/api.go b/service/wechatpayapiv2/api.go
new file mode 100644
index 00000000..61909ce7
--- /dev/null
+++ b/service/wechatpayapiv2/api.go
@@ -0,0 +1,16 @@
+package wechatpayapiv2
+
+import (
+	"context"
+	"crypto/tls"
+	"github.com/dtapps/go-library/utils/gorequest"
+)
+
+func (c *Client) Post(ctx context.Context, _method string, certStatus bool, cert *tls.Certificate, notMustParams ...gorequest.Params) ([]byte, error) {
+	// 参数
+	params := gorequest.NewParamsWith(notMustParams...)
+	// 请求
+	request, err := c.request(ctx, apiUrl+_method, params, true, cert)
+	// 定义
+	return request.ResponseBody, err
+}
diff --git a/service/wechatpayapiv2/cert.go b/service/wechatpayapiv2/cert.go
new file mode 100644
index 00000000..11c9b5d2
--- /dev/null
+++ b/service/wechatpayapiv2/cert.go
@@ -0,0 +1,8 @@
+package wechatpayapiv2
+
+import "crypto/tls"
+
+func GetP12ToPem(cert, key string) (*tls.Certificate, error) {
+	pemCert, err := tls.X509KeyPair([]byte(cert), []byte(key))
+	return &pemCert, err
+}
diff --git a/service/wechatpayapiv2/get.sign.go b/service/wechatpayapiv2/get.sign.go
new file mode 100644
index 00000000..e31fccde
--- /dev/null
+++ b/service/wechatpayapiv2/get.sign.go
@@ -0,0 +1,39 @@
+package wechatpayapiv2
+
+import (
+	"bytes"
+	"fmt"
+	"github.com/dtapps/go-library/utils/gomd5"
+	"sort"
+	"strings"
+)
+
+// GetSign 获取签名
+func GetSign(param map[string]interface{}, key string) string {
+	sortString := getSortString(param)
+	sign := gomd5.Md5(sortString + "&key=" + key)
+	return strings.ToUpper(sign)
+}
+
+// 支付字符串拼接
+func getSortString(m map[string]interface{}) string {
+	var buf bytes.Buffer
+	keys := make([]string, 0, len(m))
+	for k := range m {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	for _, k := range keys {
+		vs := m[k]
+		if vs == "" {
+			continue
+		}
+		if buf.Len() > 0 {
+			buf.WriteByte('&')
+		}
+		buf.WriteString(k)
+		buf.WriteByte('=')
+		buf.WriteString(fmt.Sprintf("%v", vs))
+	}
+	return buf.String()
+}
diff --git a/service/wechatpayapiv2/request.go b/service/wechatpayapiv2/request.go
index ea3a093c..0f1afc31 100644
--- a/service/wechatpayapiv2/request.go
+++ b/service/wechatpayapiv2/request.go
@@ -14,9 +14,6 @@ func (c *Client) request(ctx context.Context, url string, params map[string]inte
 	// 设置请求地址
 	client.SetUri(url)
 
-	client.SetHeader("app_id", c.GetAppId())
-	client.SetHeader("mch_id", c.GetMchId())
-
 	// 设置格式
 	client.SetContentTypeXml()