diff --git a/app/api/service/user.go b/app/api/service/user.go
index 5cd9d53..3fd2ea2 100644
--- a/app/api/service/user.go
+++ b/app/api/service/user.go
@@ -19,6 +19,10 @@ func (p Params) Str(key string) string {
 	return cast.ToString(p[key])
 }
 
+func (p Params) Int(key string) int {
+	return cast.ToInt(p[key])
+}
+
 type User struct {
 	sess   *session.ApiSession
 	params Params
@@ -82,7 +86,7 @@ func (u *User) VipCheck() *response.Response {
 		return nil
 	}
 
-	free := time.Unix(u.sess.GetUserInfo().ActiveTime, 0).AddDate(0, 0, cast.ToInt(u.params[config.ServiceFreeDay])).Unix()
+	free := time.Unix(u.sess.GetUserInfo().ActiveTime, 0).AddDate(0, 0, u.params.Int(config.ServiceFreeDay)).Unix()
 	if free-u.sess.GetUserInfo().ActiveTime > 0 {
 		return nil
 	}