diff --git a/README.md b/README.md
index 3a77cf89..eafbc18d 100644
--- a/README.md
+++ b/README.md
@@ -102,7 +102,7 @@ $ go get -u github.com/larksuite/oapi-sdk-go
       // request.SetNotDataField(), set whether the response does not have a `data` field, business interfaces all have `data `Field, so you don’t need to set 
       // request.SetTenantKey("TenantKey"), as an `app store application`, it means using `tenant_access_token` to access the API, you need to set 
       // request.SetUserAccessToken("UserAccessToken"), which means using` user_access_token` To access the API, you need to set 
-    // req := request.NewRequest2(httpPath:string, httpMethod:string, accessTokenType:AccessTokenType, input:interface, output:interface, ... optFns:OptFn [)))
+    // req := request.NewRequestWithNative(httpPath:string, httpMethod:string, accessTokenType:AccessTokenType, input:interface, output:interface, ... optFns:OptFn [)))
     // Example:
     body := map[string]interface{}{
     		"open_id":  "[open_id]",
@@ -112,7 +112,7 @@ $ go get -u github.com/larksuite/oapi-sdk-go
     		},
     	}
     ret := make(map[string]interface{})
-    req := request.NewRequest2("message/v4/send", "POST", request.AccessTokenTypeTenant, body, &ret)
+    req := request.NewRequestWithNative("message/v4/send", "POST", request.AccessTokenTypeTenant, body, &ret)
     coreCtx := core.WarpContext(context.Background())
     err := api.Send(coreCtx, conf, req)
     fmt.Println(coreCtx.GetRequestID())
@@ -163,7 +163,7 @@ $ go get -u github.com/larksuite/oapi-sdk-go
         // event: map[string]interface{}
     // return:
         // error: not nil, response status code 500
-    event.SetTypeHandler2(conf, "app_status_change", func(coreCtx *core.Context, event map[string]interface{}) error {
+    event.SetTypeCallback(conf, "app_status_change", func(coreCtx *core.Context, event map[string]interface{}) error {
         fmt.Println(coreCtx.GetRequestID())
         fmt.Println(tools.Prettify(event))
         data := event["event"].(map[string]interface{})
diff --git a/README.zh.md b/README.zh.md
index 16492792..491f1799 100644
--- a/README.zh.md
+++ b/README.zh.md
@@ -107,7 +107,7 @@ $ go get -u github.com/larksuite/oapi-sdk-go
       // request.SetNotDataField(),设置响应的是否 没有`data`字段，业务接口都是有`data`字段，所以不需要设置
       // request.SetTenantKey("TenantKey")，以`应用商店应用`身份，表示使用`tenant_access_token`访问API，需要设置
       // request.SetUserAccessToken("UserAccessToken")，表示使用`user_access_token`访问API，需要设置
-    // req := request.NewRequest2(httpPath:string, httpMethod:string, accessTokenType:AccessTokenType, input:interface, output:interface, ... optFns:OptFn [)))
+    // req := request.NewRequestWithNative(httpPath:string, httpMethod:string, accessTokenType:AccessTokenType, input:interface, output:interface, ... optFns:OptFn [)))
     // Example:
     body := map[string]interface{}{
             "open_id":  "[open_id]",
@@ -117,7 +117,7 @@ $ go get -u github.com/larksuite/oapi-sdk-go
             },
         }
     ret := make(map[string]interface{})
-    req := request.NewRequest2("message/v4/send", "POST", request.AccessTokenTypeTenant, body, &ret)coreCtx := core.WarpContext(context.Background())
+    req := request.NewRequestWithNative("message/v4/send", "POST", request.AccessTokenTypeTenant, body, &ret)coreCtx := core.WarpContext(context.Background())
     err := api.Send(coreCtx, conf, req)
     fmt.Println(coreCtx.GetRequestID())
     fmt.Println(coreCtx.GetHTTPStatusCode())
@@ -168,7 +168,7 @@ $ go get -u github.com/larksuite/oapi-sdk-go
         // event: 事件数据
     // return:
         // error: 不为nil，响应状态码 500
-    event.SetTypeHandler2(conf, "app_status_change", func(coreCtx *core.Context, event map[string]interface{}) error {
+    event.SetTypeCallback(conf, "app_status_change", func(coreCtx *core.Context, event map[string]interface{}) error {
         fmt.Println(coreCtx.GetRequestID())
         fmt.Println(tools.Prettify(event))
         data := event["event"].(map[string]interface{})
diff --git a/api/core/request/request.go b/api/core/request/request.go
index 62ea1703..a75f22f9 100644
--- a/api/core/request/request.go
+++ b/api/core/request/request.go
@@ -150,11 +150,17 @@ func NewRequestByAuth(httpPath, httpMethod string, input, output interface{}) *R
 	}
 }
 
+// Deprecated, please use `NewRequestWithNative`
 func NewRequest2(httpPath, httpMethod string, accessTokenType AccessTokenType,
 	input interface{}, output interface{}, optFns ...OptFn) *Request {
 	return NewRequest(httpPath, httpMethod, []AccessTokenType{accessTokenType}, input, output, optFns...)
 }
 
+func NewRequestWithNative(httpPath, httpMethod string, accessTokenType AccessTokenType,
+	input interface{}, output interface{}, optFns ...OptFn) *Request {
+	return NewRequest(httpPath, httpMethod, []AccessTokenType{accessTokenType}, input, output, optFns...)
+}
+
 func NewRequest(httpPath, httpMethod string, accessTokenTypes []AccessTokenType,
 	input interface{}, output interface{}, optFns ...OptFn) *Request {
 	accessibleTokenTypeSet := make(map[AccessTokenType]struct{})
diff --git a/event/event.go b/event/event.go
index 636f0cb5..24ca803b 100644
--- a/event/event.go
+++ b/event/event.go
@@ -16,12 +16,17 @@ func SetTypeHandler(conf *config.Config, eventType string, handler handlers.Hand
 	handlers.SetTypeHandler(conf, eventType, handler)
 }
 
-func SetTypeHandler2(conf *config.Config, eventType string, fn func(ctx *core.Context, event map[string]interface{}) error) {
-	SetTypeHandler(conf, eventType, &defaultHandler{fn: fn})
+// Deprecated, please use `SetTypeCallback`
+func SetTypeHandler2(conf *config.Config, eventType string, callback func(ctx *core.Context, event map[string]interface{}) error) {
+	SetTypeHandler(conf, eventType, &defaultHandler{callback: callback})
+}
+
+func SetTypeCallback(conf *config.Config, eventType string, callback func(ctx *core.Context, event map[string]interface{}) error) {
+	SetTypeHandler(conf, eventType, &defaultHandler{callback: callback})
 }
 
 type defaultHandler struct {
-	fn func(ctx *core.Context, event map[string]interface{}) error
+	callback func(ctx *core.Context, event map[string]interface{}) error
 }
 
 func (h *defaultHandler) GetEvent() interface{} {
@@ -31,7 +36,7 @@ func (h *defaultHandler) GetEvent() interface{} {
 
 func (h *defaultHandler) Handle(ctx *core.Context, event interface{}) error {
 	e := event.(*map[string]interface{})
-	return h.fn(ctx, *e)
+	return h.callback(ctx, *e)
 }
 
 func Handle(conf *config.Config, request *coremodel.OapiRequest) *coremodel.OapiResponse {
diff --git a/sample/api/api.go b/sample/api/api.go
index 1a0a31ed..47718f4e 100644
--- a/sample/api/api.go
+++ b/sample/api/api.go
@@ -33,7 +33,7 @@ func testSendMessage() {
 		},
 	}
 	ret := make(map[string]interface{})
-	req := request.NewRequest2("message/v4/send", "POST",
+	req := request.NewRequestWithNative("message/v4/send", "POST",
 		request.AccessTokenTypeTenant, body, &ret,
 		//应用市场应用 request.SetTenantKey("TenantKey"),
 	)
@@ -75,7 +75,7 @@ func testUploadFile() {
 		formData.AppendFile(request.NewFile().SetContentStream(file).SetFieldName("image"))
 	*/
 	ret := &UploadImage{}
-	err = api.Send(coreCtx, conf, request.NewRequest2("image/v4/put", "POST",
+	err = api.Send(coreCtx, conf, request.NewRequestWithNative("image/v4/put", "POST",
 		request.AccessTokenTypeTenant, formData, ret))
 	fmt.Println(coreCtx.GetRequestID())
 	fmt.Println(coreCtx.GetHTTPStatusCode())
@@ -101,7 +101,7 @@ func testDownloadFile() {
 			return
 		}
 	*/
-	req := request.NewRequest2("image/v4/get", "GET",
+	req := request.NewRequestWithNative("image/v4/get", "GET",
 		request.AccessTokenTypeTenant, nil, ret,
 		request.SetQueryParams(map[string]interface{}{"image_key": "[image key]"}), request.SetResponseStream())
 	err := api.Send(coreCtx, conf, req)
diff --git a/sample/event/gin.go b/sample/event/gin.go
index 80df6b3b..f1cef289 100644
--- a/sample/event/gin.go
+++ b/sample/event/gin.go
@@ -31,7 +31,7 @@ func main() {
 			return nil
 		})
 	*/
-	event.SetTypeHandler2(conf, "app_status_change", func(ctx *core.Context, event map[string]interface{}) error {
+	event.SetTypeCallback(conf, "app_status_change", func(ctx *core.Context, event map[string]interface{}) error {
 		fmt.Println(ctx.GetRequestID())
 		fmt.Println(tools.Prettify(event))
 		data := event["event"].(map[string]interface{})
diff --git a/sample/event/gin2.go b/sample/event/gin2.go
index 5da4b307..19cd0b8d 100644
--- a/sample/event/gin2.go
+++ b/sample/event/gin2.go
@@ -31,7 +31,7 @@ func main() {
 			return nil
 		})
 	*/
-	event.SetTypeHandler2(conf, "app_status_change", func(ctx *core.Context, event map[string]interface{}) error {
+	event.SetTypeCallback(conf, "app_status_change", func(ctx *core.Context, event map[string]interface{}) error {
 		fmt.Println(ctx.GetRequestID())
 		fmt.Println(tools.Prettify(event))
 		data := event["event"].(map[string]interface{})
diff --git a/sample/event/http_server.go b/sample/event/http_server.go
index 942abe9c..ffb69b50 100644
--- a/sample/event/http_server.go
+++ b/sample/event/http_server.go
@@ -30,7 +30,7 @@ func main() {
 		return nil
 	})
 
-	event.SetTypeHandler2(conf, "user.created_v2", func(coreCtx *core.Context, event map[string]interface{}) error {
+	event.SetTypeCallback(conf, "user.created_v2", func(coreCtx *core.Context, event map[string]interface{}) error {
 		fmt.Println(coreCtx.GetRequestID())
 		fmt.Println(tools.Prettify(event))
 		return nil