diff --git a/config/apns.yaml b/config/apns.yaml
index 7223614..8426ebd 100644
--- a/config/apns.yaml
+++ b/config/apns.yaml
@@ -1,7 +1,7 @@
 core:
   port: "8088"
   notification_max: 100
-  production: true
+  mode: "release"
   ssl: false
   cert_path: "cert.pem"
   key_path: "key.pem"
diff --git a/gorush/config.go b/gorush/config.go
index ead7f44..f56117c 100644
--- a/gorush/config.go
+++ b/gorush/config.go
@@ -16,7 +16,7 @@ type ConfYaml struct {
 type SectionCore struct {
 	Port            string `yaml:"port"`
 	NotificationMax int    `yaml:"notification_max"`
-	Production      bool   `yaml:"production"`
+	Mode      string   `yaml:"mode"`
 	SSL             bool   `yaml:"ssl"`
 	CertPath        string `yaml:"cert_path"`
 	KeyPath         string `yaml:"key_path"`
@@ -45,7 +45,7 @@ func BuildDefaultPushConf() ConfYaml {
 	// Core
 	conf.Core.Port = "8088"
 	conf.Core.NotificationMax = 100
-	conf.Core.Production = true
+	conf.Core.Mode = "release"
 	conf.Core.SSL = false
 	conf.Core.CertPath = "cert.pem"
 	conf.Core.KeyPath = "key.pem"
diff --git a/gorush/server.go b/gorush/server.go
index 079ab33..5fc9e0e 100644
--- a/gorush/server.go
+++ b/gorush/server.go
@@ -39,9 +39,8 @@ func pushHandler(c *gin.Context) {
 }
 
 func GetMainEngine() *gin.Engine {
-	if PushConf.Core.Production {
-		gin.SetMode(gin.ReleaseMode)
-	}
+	// set server mode
+	gin.SetMode(PushConf.Core.Mode)
 
 	r := gin.New()
 
diff --git a/gorush/server_test.go b/gorush/server_test.go
index 6842a0d..00670ea 100644
--- a/gorush/server_test.go
+++ b/gorush/server_test.go
@@ -3,18 +3,17 @@ package gopush
 import (
 	"github.com/appleboy/gofight"
 	"github.com/buger/jsonparser"
-	"github.com/gin-gonic/gin"
 	"github.com/stretchr/testify/assert"
 	"net/http"
 	"testing"
 )
 
 func initTest() {
-	gin.SetMode(gin.TestMode)
 	PushConf = BuildDefaultPushConf()
+	PushConf.Core.Mode = "test"
 }
 
-func TestGinHelloWorld(t *testing.T) {
+func TestRootHandler(t *testing.T) {
 	initTest()
 
 	r := gofight.New()