diff --git a/README.md b/README.md
index 52fcc73..e3dac54 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,19 @@
 # wechatgpt
 ![coming](https://media.istockphoto.com/id/1332167985/photo/coming-soon-neon-sign-the-banner-shining-light-signboard-collection.jpg?b=1&s=170667a&w=0&k=20&c=Le4B-lJt-jXjeAOdlTQptNvN_DmRwWF19ShNc5VY4a4=)
+
+# how to use
+
+## prepare runtime environment
+
+```
+go mod tidy 
+cp config/config.yaml.example local/config.yaml
+```
+
+## add your openai token
+open the [openai](https://beta.openai.com/account/api-keys) and register account, copy your token to config file
+
+## run app
+```
+go run main.go
+```
diff --git a/handler/handler.go b/handler/handler.go
index 24dd320..9813378 100644
--- a/handler/handler.go
+++ b/handler/handler.go
@@ -2,39 +2,33 @@ package handler
 
 import (
 	"github.com/eatmoreapple/openwechat"
+	"github.com/prometheus/common/log"
 )
 
-// MessageHandlerInterface 消息处理接口
 type MessageHandlerInterface interface {
 	handle(*openwechat.Message) error
 	ReplyText(*openwechat.Message) error
 }
 
-type HandlerType string
+type Type string
 
 const (
 	GroupHandler = "group"
 )
 
-var handlers map[HandlerType]MessageHandlerInterface
+var handlers map[Type]MessageHandlerInterface
 
 func init() {
-	handlers = make(map[HandlerType]MessageHandlerInterface)
+	handlers = make(map[Type]MessageHandlerInterface)
 	handlers[GroupHandler] = NewGroupMessageHandler()
 }
 
-// Handler 全局处理入口
 func Handler(msg *openwechat.Message) {
-	//if msg.IsSendBySelf() {
-	//	return
-	//}
-	//sender, err := msg.Sender()
-	//if err != nil {
-	//	log.Println(err)
-	//	return
-	//}
 	if msg.IsSendByGroup() {
-		handlers[GroupHandler].handle(msg)
-		return
+		err := handlers[GroupHandler].handle(msg)
+		if err != nil {
+			log.Errorf("handle error: %s\n", err.Error())
+			return
+		}
 	}
 }