diff --git a/certificates.go b/certificates.go
index fc203d3..62e6fca 100644
--- a/certificates.go
+++ b/certificates.go
@@ -34,9 +34,9 @@ func NewCertificatesResult(result CertificatesResponse, body []byte, http gorequ
 
 // Certificates 获取平台证书列表
 // https://pay.weixin.qq.com/wiki/doc/apiv3/apis/wechatpay5_1.shtml
-func (app *App) Certificates() *CertificatesResult {
+func (c *Client) Certificates() *CertificatesResult {
 	// 请求
-	request, err := app.request("https://api.mch.weixin.qq.com/v3/certificates", map[string]interface{}{}, http.MethodGet)
+	request, err := c.request("https://api.mch.weixin.qq.com/v3/certificates", map[string]interface{}{}, http.MethodGet)
 	if err != nil {
 		return NewCertificatesResult(CertificatesResponse{}, request.ResponseBody, request, err)
 	}
diff --git a/const.go b/const.go
index 9079682..f3c1f2e 100644
--- a/const.go
+++ b/const.go
@@ -10,7 +10,7 @@ const (
 
 // SDK 相关信息
 const (
-	Version         = "1.0.0"                      // SDK 版本
+	Version         = "1.0.1"                      // SDK 版本
 	UserAgentFormat = "WechatPay-Go/%s (%s) GO/%s" // UserAgent中的信息
 )
 
diff --git a/pay.jsapi.go b/pay.jsapi.go
index 98add24..706a2cb 100644
--- a/pay.jsapi.go
+++ b/pay.jsapi.go
@@ -22,26 +22,26 @@ type GetJsApiResult struct {
 }
 
 // GetJsApi JSAPI调起支付API https://pay.weixin.qq.com/wiki/doc/apiv3/apis/chapter3_1_4.shtml
-func (app *App) GetJsApi(param GetJsApi) (result GetJsApiResult, err error) {
+func (c *Client) GetJsApi(param GetJsApi) (result GetJsApiResult, err error) {
 
 	// sign params
 	timeStamp := time.Now().Unix()
 	nonce := gorandom.Alphanumeric(32)
 
-	result.AppId = app.subAppid
+	result.AppId = c.config.SubAppid
 	result.TimeStamp = fmt.Sprintf("%v", timeStamp) // 时间戳
 	result.NonceStr = nonce                         // 随机字符串
 	result.Package = param.Package                  // 订单详情扩展字符串
 
 	// 签名
-	message := fmt.Sprintf("%s\n%s\n%s\n%s\n", app.subAppid, fmt.Sprintf("%v", timeStamp), nonce, param.Package)
+	message := fmt.Sprintf("%s\n%s\n%s\n%s\n", c.config.SubAppid, fmt.Sprintf("%v", timeStamp), nonce, param.Package)
 
-	signBytes, err := app.signPKCS1v15(message, []byte(app.mchSslKey))
+	signBytes, err := c.signPKCS1v15(message, []byte(c.config.MchSslKey))
 	if err != nil {
 		return result, err
 	}
 
-	sign := app.base64EncodeStr(signBytes)
+	sign := c.base64EncodeStr(signBytes)
 	result.PaySign = sign   // 签名
 	result.SignType = "RSA" // 签名方式
 	return result, nil
diff --git a/pay.partner.transactions.id.go b/pay.partner.transactions.id.go
index bde41bc..de37f4d 100644
--- a/pay.partner.transactions.id.go
+++ b/pay.partner.transactions.id.go
@@ -64,12 +64,12 @@ func NewPayPartnerTransactionsIdResult(result PayPartnerTransactionsIdResponse,
 
 // PayPartnerTransactionsId 微信支付订单号查询
 // https://pay.weixin.qq.com/wiki/doc/apiv3_partner/apis/chapter4_5_2.shtml
-func (app *App) PayPartnerTransactionsId(transactionId string) *PayPartnerTransactionsIdResult {
+func (c *Client) PayPartnerTransactionsId(transactionId string) *PayPartnerTransactionsIdResult {
 	// 参数
 	params := gorequest.NewParams()
 	// 请求
 	// 请求
-	request, err := app.request(fmt.Sprintf("https://api.mch.weixin.qq.com/v3/pay/partner/transactions/id/%s?sp_mchid=%s&sub_mchid=%s", transactionId, app.spMchId, app.subMchId), params, http.MethodGet)
+	request, err := c.request(fmt.Sprintf("https://api.mch.weixin.qq.com/v3/pay/partner/transactions/id/%s?sp_mchid=%s&sub_mchid=%s", transactionId, c.config.SpMchId, c.config.SubMchId), params, http.MethodGet)
 	if err != nil {
 		return NewPayPartnerTransactionsIdResult(PayPartnerTransactionsIdResponse{}, request.ResponseBody, request, err)
 	}
diff --git a/pay.partner.transactions.jsapi.go b/pay.partner.transactions.jsapi.go
index 59bd31f..7b25a92 100644
--- a/pay.partner.transactions.jsapi.go
+++ b/pay.partner.transactions.jsapi.go
@@ -23,15 +23,15 @@ func NewPayPartnerTransactionsJsapiResult(result PayPartnerTransactionsJsapiResp
 
 // PayPartnerTransactionsJsapi JSAPI下单
 // https://pay.weixin.qq.com/wiki/doc/apiv3_partner/apis/chapter4_5_1.shtml
-func (app *App) PayPartnerTransactionsJsapi(notMustParams ...gorequest.Params) *PayPartnerTransactionsJsapiResult {
+func (c *Client) PayPartnerTransactionsJsapi(notMustParams ...gorequest.Params) *PayPartnerTransactionsJsapiResult {
 	// 参数
 	params := gorequest.NewParamsWith(notMustParams...)
-	params.Set("sp_appid", app.spAppid)   // 服务商应用ID
-	params.Set("sp_mchid", app.spMchId)   // 服务商户号
-	params.Set("sub_appid", app.subAppid) // 子商户应用ID
-	params.Set("sub_mchid", app.subMchId) // 子商户号
+	params.Set("sp_appid", c.config.SpAppid)   // 服务商应用ID
+	params.Set("sp_mchid", c.config.SpMchId)   // 服务商户号
+	params.Set("sub_appid", c.config.SubAppid) // 子商户应用ID
+	params.Set("sub_mchid", c.config.SubMchId) // 子商户号
 	// 请求
-	request, err := app.request("https://api.mch.weixin.qq.com/v3/pay/partner/transactions/jsapi", params, http.MethodPost)
+	request, err := c.request("https://api.mch.weixin.qq.com/v3/pay/partner/transactions/jsapi", params, http.MethodPost)
 	if err != nil {
 		return NewPayPartnerTransactionsJsapiResult(PayPartnerTransactionsJsapiResponse{}, request.ResponseBody, request, err)
 	}
diff --git a/pay.partner.transactions.out-trade-no.close.go b/pay.partner.transactions.out-trade-no.close.go
index 00a3352..989b107 100644
--- a/pay.partner.transactions.out-trade-no.close.go
+++ b/pay.partner.transactions.out-trade-no.close.go
@@ -18,13 +18,13 @@ func NewPayPartnerTransactionsOutTradeNoCloseResult(body []byte, http gorequest.
 
 // PayPartnerTransactionsOutTradeNoClose 关闭订单API
 // https://pay.weixin.qq.com/wiki/doc/apiv3_partner/apis/chapter4_5_3.shtml
-func (app *App) PayPartnerTransactionsOutTradeNoClose(outTradeNo string) *PayPartnerTransactionsOutTradeNoCloseResult {
+func (c *Client) PayPartnerTransactionsOutTradeNoClose(outTradeNo string) *PayPartnerTransactionsOutTradeNoCloseResult {
 	// 参数
 	params := gorequest.NewParams()
-	params.Set("sp_mchid", app.spMchId)   // 服务商户号
-	params.Set("sub_mchid", app.subMchId) // 子商户号
+	params.Set("sp_mchid", c.config.SpMchId)   // 服务商户号
+	params.Set("sub_mchid", c.config.SubMchId) // 子商户号
 	// 请求
-	request, err := app.request(fmt.Sprintf("https://api.mch.weixin.qq.com/v3/pay/partner/transactions/out-trade-no/%s/close", outTradeNo), params, http.MethodPost)
+	request, err := c.request(fmt.Sprintf("https://api.mch.weixin.qq.com/v3/pay/partner/transactions/out-trade-no/%s/close", outTradeNo), params, http.MethodPost)
 	if err != nil {
 		return NewPayPartnerTransactionsOutTradeNoCloseResult(request.ResponseBody, request, err)
 	}
diff --git a/pay.partner.transactions.out-trade-no.go b/pay.partner.transactions.out-trade-no.go
index f5b5798..de98b4b 100644
--- a/pay.partner.transactions.out-trade-no.go
+++ b/pay.partner.transactions.out-trade-no.go
@@ -67,11 +67,11 @@ func NewPayPartnerTransactionsOutTradeNoResult(result PayPartnerTransactionsOutT
 
 // PayPartnerTransactionsOutTradeNo 商户订单号查询
 // https://pay.weixin.qq.com/wiki/doc/apiv3_partner/apis/chapter4_5_2.shtml
-func (app *App) PayPartnerTransactionsOutTradeNo(outTradeNo string) *PayPartnerTransactionsOutTradeNoResult {
+func (c *Client) PayPartnerTransactionsOutTradeNo(outTradeNo string) *PayPartnerTransactionsOutTradeNoResult {
 	// 参数
 	params := gorequest.NewParams()
 	// 请求
-	request, err := app.request(fmt.Sprintf("https://api.mch.weixin.qq.com/v3/pay/partner/transactions/out-trade-no/%s?sp_mchid=%s&sub_mchid=%s", outTradeNo, app.spMchId, app.subMchId), params, http.MethodGet)
+	request, err := c.request(fmt.Sprintf("https://api.mch.weixin.qq.com/v3/pay/partner/transactions/out-trade-no/%s?sp_mchid=%s&sub_mchid=%s", outTradeNo, c.config.SpMchId, c.config.SubMchId), params, http.MethodGet)
 	if err != nil {
 		return NewPayPartnerTransactionsOutTradeNoResult(PayPartnerTransactionsOutTradeNoResponse{}, request.ResponseBody, request, err)
 	}
diff --git a/refund.domestic.refunds.go b/refund.domestic.refunds.go
index 6095c97..51380f1 100644
--- a/refund.domestic.refunds.go
+++ b/refund.domestic.refunds.go
@@ -62,12 +62,12 @@ func NewRefundDomesticRefundsResult(result RefundDomesticRefundsResponse, body [
 
 // RefundDomesticRefunds 申请退款API
 // https://pay.weixin.qq.com/wiki/doc/apiv3_partner/apis/chapter4_5_9.shtml
-func (app *App) RefundDomesticRefunds(notMustParams ...gorequest.Params) *RefundDomesticRefundsResult {
+func (c *Client) RefundDomesticRefunds(notMustParams ...gorequest.Params) *RefundDomesticRefundsResult {
 	// 参数
 	params := gorequest.NewParamsWith(notMustParams...)
-	params.Set("sub_mchid", app.subMchId) // 子商户号
+	params.Set("sub_mchid", c.config.SubMchId) // 子商户号
 	// 请求
-	request, err := app.request("https://api.mch.weixin.qq.com/v3/refund/domestic/refunds", params, http.MethodPost)
+	request, err := c.request("https://api.mch.weixin.qq.com/v3/refund/domestic/refunds", params, http.MethodPost)
 	if err != nil {
 		return NewRefundDomesticRefundsResult(RefundDomesticRefundsResponse{}, request.ResponseBody, request, err)
 	}
diff --git a/refund.domestic.refunds.out_refund_no.go b/refund.domestic.refunds.out_refund_no.go
index ed495f1..6ff1364 100644
--- a/refund.domestic.refunds.out_refund_no.go
+++ b/refund.domestic.refunds.out_refund_no.go
@@ -62,11 +62,11 @@ func NewRefundDomesticRefundsOutRefundNoResult(result RefundDomesticRefundsOutRe
 
 // RefundDomesticRefundsOutRefundNo 查询单笔退款API
 // https://pay.weixin.qq.com/wiki/doc/apiv3_partner/apis/chapter4_5_9.shtml
-func (app *App) RefundDomesticRefundsOutRefundNo(outRefundNo string) *RefundDomesticRefundsOutRefundNoResult {
+func (c *Client) RefundDomesticRefundsOutRefundNo(outRefundNo string) *RefundDomesticRefundsOutRefundNoResult {
 	// 参数
 	params := gorequest.NewParams()
 	// 请求
-	request, err := app.request("https://api.mch.weixin.qq.com/v3/refund/domestic/refunds/"+outRefundNo+"?sub_mchid="+app.subMchId, params, http.MethodGet)
+	request, err := c.request("https://api.mch.weixin.qq.com/v3/refund/domestic/refunds/"+outRefundNo+"?sub_mchid="+c.config.SubMchId, params, http.MethodGet)
 	if err != nil {
 		return NewRefundDomesticRefundsOutRefundNoResult(RefundDomesticRefundsOutRefundNoResponse{}, request.ResponseBody, request, err)
 	}
diff --git a/sign.go b/sign.go
index 4d32900..3ba563a 100644
--- a/sign.go
+++ b/sign.go
@@ -19,7 +19,7 @@ import (
 )
 
 // 对消息的散列值进行数字签名
-func (app *App) signPKCS1v15(msg string, privateKey []byte) ([]byte, error) {
+func (c *Client) signPKCS1v15(msg string, privateKey []byte) ([]byte, error) {
 
 	block, _ := pem.Decode(privateKey)
 	if block == nil {
@@ -36,7 +36,7 @@ func (app *App) signPKCS1v15(msg string, privateKey []byte) ([]byte, error) {
 		return nil, errors.New("private key format error")
 	}
 
-	sign, err := rsa.SignPKCS1v15(rand.Reader, key, crypto.SHA256, app.haSha256(msg))
+	sign, err := rsa.SignPKCS1v15(rand.Reader, key, crypto.SHA256, c.haSha256(msg))
 	if err != nil {
 		return nil, errors.New("sign error")
 	}
@@ -45,12 +45,12 @@ func (app *App) signPKCS1v15(msg string, privateKey []byte) ([]byte, error) {
 }
 
 // base编码
-func (app *App) base64EncodeStr(src []byte) string {
+func (c *Client) base64EncodeStr(src []byte) string {
 	return base64.StdEncoding.EncodeToString(src)
 }
 
 // sha256加密
-func (app *App) haSha256(str string) []byte {
+func (c *Client) haSha256(str string) []byte {
 	h := sha256.New()
 	h.Write([]byte(str))
 	return h.Sum(nil)
@@ -58,7 +58,7 @@ func (app *App) haSha256(str string) []byte {
 
 // 生成身份认证信息
 // https://wechatpay-api.gitbook.io/wechatpay-api-v3/qian-ming-zhi-nan-1/qian-ming-sheng-cheng
-func (app *App) authorization(method string, paramMap map[string]interface{}, rawUrl string) (token string, err error) {
+func (c *Client) authorization(method string, paramMap map[string]interface{}, rawUrl string) (token string, err error) {
 
 	// 请求报文主体
 	var signBody string
@@ -86,7 +86,7 @@ func (app *App) authorization(method string, paramMap map[string]interface{}, ra
 	// 构造签名串
 	message := fmt.Sprintf(SignatureMessageFormat, method, canonicalUrl, timestamp, nonce, signBody)
 
-	sign, err := app.signSHA256WithRSA(message, app.getRsa([]byte(app.mchSslKey)))
+	sign, err := c.signSHA256WithRSA(message, c.getRsa([]byte(c.config.MchSslKey)))
 
 	if err != nil {
 		return token, err
@@ -94,14 +94,14 @@ func (app *App) authorization(method string, paramMap map[string]interface{}, ra
 
 	authorization := fmt.Sprintf(
 		HeaderAuthorizationFormat, getAuthorizationType(),
-		app.spMchId, nonce, timestamp, app.mchSslSerialNo, sign,
+		c.config.SpMchId, nonce, timestamp, c.config.MchSslSerialNo, sign,
 	)
 
 	return authorization, nil
 }
 
 // 报文解密
-func (app *App) decryptGCM(aesKey, nonceV, ciphertextV, additionalDataV string) ([]byte, error) {
+func (c *Client) decryptGCM(aesKey, nonceV, ciphertextV, additionalDataV string) ([]byte, error) {
 	key := []byte(aesKey)
 	nonce := []byte(nonceV)
 	additionalData := []byte(additionalDataV)
@@ -125,7 +125,7 @@ func (app *App) decryptGCM(aesKey, nonceV, ciphertextV, additionalDataV string)
 }
 
 // 对消息的散列值进行数字签名
-func (app *App) getRsa(privateKey []byte) *rsa.PrivateKey {
+func (c *Client) getRsa(privateKey []byte) *rsa.PrivateKey {
 
 	block, _ := pem.Decode(privateKey)
 	if block == nil {
@@ -146,7 +146,7 @@ func (app *App) getRsa(privateKey []byte) *rsa.PrivateKey {
 }
 
 // 通过私钥对字符串以 SHA256WithRSA 算法生成签名信息
-func (app *App) signSHA256WithRSA(source string, privateKey *rsa.PrivateKey) (signature string, err error) {
+func (c *Client) signSHA256WithRSA(source string, privateKey *rsa.PrivateKey) (signature string, err error) {
 	if privateKey == nil {
 		return "", fmt.Errorf("private key should not be nil")
 	}
diff --git a/wechatpayopen.go b/wechatpayopen.go
index 8286c8e..fa6849d 100644
--- a/wechatpayopen.go
+++ b/wechatpayopen.go
@@ -6,58 +6,64 @@ import (
 	"gorm.io/gorm"
 )
 
-// App 微信支付服务器
-type App struct {
-	spAppid        string         // 服务商应用ID
-	spMchId        string         // 服务商户号
-	subAppid       string         // 子商户应用ID
-	subMchId       string         // 子商户号
-	apiV2          string         // APIv2密钥
-	apiV3          string         // APIv3密钥
-	serialNo       string         // 序列号
-	mchSslSerialNo string         // pem 证书号
-	mchSslCer      string         // pem 内容
-	mchSslKey      string         // pem key 内容
-	pgsql          *gorm.DB       // pgsql数据库
-	client         *gorequest.App // 请求客户端
-	log            *golog.Api     // 日志服务
-	logTableName   string         // 日志表名
-	logStatus      bool           // 日志状态
+type ConfigClient struct {
+	SpAppid        string   // 服务商应用ID
+	SpMchId        string   // 服务商户号
+	SubAppid       string   // 子商户应用ID
+	SubMchId       string   // 子商户号
+	ApiV2          string   // APIv2密钥
+	ApiV3          string   // APIv3密钥
+	SerialNo       string   // 序列号
+	MchSslSerialNo string   // pem 证书号
+	MchSslCer      string   // pem 内容
+	MchSslKey      string   // pem key 内容
+	PgsqlDb        *gorm.DB // pgsql数据库
 }
 
-// NewApp 实例化
-func NewApp(spAppid, spMchId, subAppid, subMchId, apiV2, apiV3, serialNo, mchSslSerialNo, mchSslCer, mchSslKey string, pgsql *gorm.DB) *App {
-	app := &App{spAppid: spAppid, spMchId: spMchId, subAppid: subAppid, subMchId: subMchId, apiV2: apiV2, apiV3: apiV3, serialNo: serialNo, mchSslSerialNo: mchSslSerialNo, mchSslCer: mchSslCer, mchSslKey: mchSslKey}
-	app.client = gorequest.NewHttp()
-	if pgsql != nil {
-		app.pgsql = pgsql
-		app.logStatus = true
-		app.logTableName = "wechatpayopen"
-		app.log = golog.NewApi(&golog.ApiConfig{
-			Db:        pgsql,
-			TableName: app.logTableName,
+// Client 微信支付服务
+type Client struct {
+	client       *gorequest.App // 请求客户端
+	log          *golog.Api     // 日志服务
+	logTableName string         // 日志表名
+	logStatus    bool           // 日志状态
+	config       *ConfigClient  // 配置
+}
+
+// NewClient 实例化
+func NewClient(config *ConfigClient) *Client {
+
+	c := &Client{config: config}
+
+	c.client = gorequest.NewHttp()
+	if c.config.PgsqlDb != nil {
+		c.logStatus = true
+		c.logTableName = "wechatpayopen"
+		c.log = golog.NewApi(&golog.ApiConfig{
+			Db:        c.config.PgsqlDb,
+			TableName: c.logTableName,
 		})
 	}
-	return app
+
+	return c
 }
 
-// NewAppConfig 实例化
-func (app *App) NewAppConfig(subAppid, subMchId string) *App {
-	app.subAppid = subAppid
-	app.subMchId = subMchId
-	return app
+// SubConfig 子商户配置
+func (c *Client) SubConfig(subAppid, subMchId string) *Client {
+	c.config.SpAppid = subAppid
+	c.config.SubMchId = subMchId
+	return c
 }
 
-func (app *App) request(url string, params map[string]interface{}, method string) (resp gorequest.Response, err error) {
+func (c *Client) request(url string, params map[string]interface{}, method string) (resp gorequest.Response, err error) {
 
 	// 认证
-	authorization, err := app.authorization(method, params, url)
+	authorization, err := c.authorization(method, params, url)
 	if err != nil {
 		return gorequest.Response{}, err
 	}
 
 	// 创建请求
-	client := app.client
+	client := c.client
 
 	// 设置请求地址
 	client.SetUri(url)
@@ -83,8 +89,8 @@ func (app *App) request(url string, params map[string]interface{}, method string
 	}
 
 	// 日志
-	if app.logStatus == true {
-		go app.postgresqlLog(request)
+	if c.logStatus == true {
+		go c.postgresqlLog(request)
 	}
 
 	return request, err