diff --git a/config.yaml b/config.yaml
index 82dc3ad..7c1779a 100644
--- a/config.yaml
+++ b/config.yaml
@@ -1,3 +1,6 @@
 server:
   port: 8080
   host: "localhost"
+
+app:
+  url: "http://localhost:8080"
diff --git a/config/config.go b/config/config.go
index 357cea1..6d835d9 100644
--- a/config/config.go
+++ b/config/config.go
@@ -7,16 +7,21 @@ import (
 	"os"
 )
 
-type Config struct {
-	Server ServerConfig `mapstructure:"server"`
+type config struct {
+	Server serverConfig `mapstructure:"server"`
+	App    appConfig    `mapstructure:"app"`
 }
 
-type ServerConfig struct {
+type serverConfig struct {
 	Port int    `mapstructure:"port"`
 	Host string `mapstructure:"host"`
 }
 
-var AppConfig Config
+type appConfig struct {
+	URL string `mapstructure:"url"`
+}
+
+var Conf config
 
 func LoadConfig() error {
 	env := os.Getenv("PROFILE")
@@ -37,7 +42,7 @@ func LoadConfig() error {
 		return err
 	}
 
-	if err := viper.Unmarshal(&AppConfig); err != nil {
+	if err := viper.Unmarshal(&Conf); err != nil {
 		return err
 	}
 
diff --git a/main.go b/main.go
index c236ae0..4788949 100644
--- a/main.go
+++ b/main.go
@@ -17,7 +17,7 @@ func main() {
 
 	router.SetupRoutes(r)
 
-	addr := fmt.Sprintf(":%d", config.AppConfig.Server.Port)
+	addr := fmt.Sprintf("%s:%d", config.Conf.Server.Host, config.Conf.Server.Port)
 	if err := r.Run(addr); err != nil {
 		fmt.Println("Failed to start server:", err)
 	}
diff --git a/router/handler/onvif/subscription.go b/router/handler/onvif/subscription.go
index e944404..b2760d5 100644
--- a/router/handler/onvif/subscription.go
+++ b/router/handler/onvif/subscription.go
@@ -1,17 +1,20 @@
 package onvif
 
 import (
+	"fmt"
 	"github.com/IOTechSystems/onvif/event"
 	"github.com/IOTechSystems/onvif/gosoap"
 	"github.com/gin-gonic/gin"
 	"log"
 	"net/http"
+	"onvif-agent/config"
 )
 
 func CreateEventSubscription(c *gin.Context) {
 	xaddr := c.Param("xaddr")
 	// FIXME: 把参数变成传入的参数
-	result, err := conns[xaddr].SubscribeEvents("http://172.16.19.230:8080/events/callback", "PT60S")
+	callbackURL := event.AttributedURIType(fmt.Sprintf("%s/subscriptions/callback", config.Conf.App.URL))
+	result, err := conns[xaddr].SubscribeEvents(callbackURL, "PT60S")
 	if err != nil {
 		c.JSON(http.StatusServiceUnavailable, gin.H{
 			"message": err.Error(),