diff --git a/f_config/SESSION.php b/f_config/SESSION.php
index fb08d019..029b2376 100644
--- a/f_config/SESSION.php
+++ b/f_config/SESSION.php
@@ -4,7 +4,7 @@ require_once(ROOT.'/f_func/class._Session.php');
 
 $SESSION = new _Session();
 
-if($SESSION->IsLoggedIn() == false) {
+if($SESSION->isLoggedIn() == false) {
 //    echo('<script>window.top.entrance.location.replace("'.ROOT.'/indexLogin.php");</script>');
     header ("Location: ".ROOT.'/i_login/login.php');
     exit(1);
diff --git a/f_func/class._Session.php b/f_func/class._Session.php
index 230cd261..89db5e24 100644
--- a/f_func/class._Session.php
+++ b/f_func/class._Session.php
@@ -17,15 +17,15 @@ class _Session {
         }
     }
 
-    public function Set($key, $val) {
+    public function set($key, $val) {
         $_SESSION[$key] = $val;
     }
 
-    public function Get($key) {
-        return $_SESSION[$key];
+    public function get($key) {
+        return util::array_get($_SESSION[$key]);
     }
 
-    public function Login($noMember, $idMember, $grade) {
+    public function login($noMember, $idMember, $grade) {
         $_SESSION['noMember'] = $noMember;
         $_SESSION['p_id'] = $idMember;
         $_SESSION['ip'] = util::get_client_ip(true);
@@ -33,26 +33,23 @@ class _Session {
         $_SESSION['userGrade'] = $grade;
     }
 
-    public function Logout() {
+    public function logout() {
         unset($_SESSION['noMember']);
         unset($_SESSION['p_id']);
-        unset($_SESSION['time']);
         unset($_SESSION['userGrade']);
     }
 
-    public function IsLoggedIn() {
-        if(!isset($_SESSION['noMember'])){
-            return false;
-        }
-        if($_SESSION['noMember'] != 0) {
+    public function isLoggedIn() {
+        if($this->NoMember()){
             return true;
-        } else {
+        }
+        else{
             return false;
         }
     }
 
     public function NoMember() {
-        return $_SESSION['noMember'];
+        return $this->get('noMember');
     }
 
     public function __destruct() {
diff --git a/i_entrance/logoutPost.php b/i_entrance/logoutPost.php
index 1f7be99b..d7bc0d38 100644
--- a/i_entrance/logoutPost.php
+++ b/i_entrance/logoutPost.php
@@ -6,7 +6,7 @@ require_once(ROOT.'/f_config/SESSION.php');
 // 외부 파라미터
 
 
-$SESSION->Logout();
+$SESSION->logout();
 
 $response['result'] = 'SUCCESS';
 
diff --git a/i_entrance/manage/quitPost.php b/i_entrance/manage/quitPost.php
index 7fee6087..9c9a2f24 100644
--- a/i_entrance/manage/quitPost.php
+++ b/i_entrance/manage/quitPost.php
@@ -23,7 +23,7 @@ if($member['PW'] != $pw) {
     ), 'NO=%i', $SESSION->NoMember());
 
 
-    $SESSION->Logout();
+    $SESSION->logout();
 
     $response['result'] = 'SUCCESS';
     $response['msg'] = "정상적으로 탈퇴신청 되었습니다.";
diff --git a/i_login/Post.php b/i_login/Post.php
index b5623542..19148944 100644
--- a/i_login/Post.php
+++ b/i_login/Post.php
@@ -28,7 +28,7 @@ if($member) {
         $system = $db->queryFirstRow('SELECT `LOGIN` FROM `SYSTEM` WHERE `NO` = 1');
 
         if($system['LOGIN'] == 'Y' || $member['GRADE'] >= 5) {
-            $SESSION->Login($member['NO'], $id, $member['GRADE']);
+            $SESSION->login($member['NO'], $id, $member['GRADE']);
             $db->update('MEMBER', [
                 'CONMSG'=>$conmsg,
                 'IP'=>util::get_client_ip(true),
diff --git a/i_login/login.php b/i_login/login.php
index c78ca530..3766f28a 100644
--- a/i_login/login.php
+++ b/i_login/login.php
@@ -4,7 +4,7 @@ require_once(ROOT.'/f_func/class._Session.php');
 require_once(ROOT.'/f_config/DB.php');
 require_once(ROOT.'/tmp_kakao/conf.php');//TODO: kakao 가입 정식 적용하면 코드 변경
 $SESSION = new _Session();
-if($SESSION->IsLoggedIn()){
+if($SESSION->isLoggedIn()){
     header(ROOT.'/i_entrance/Frame.php');
     die();
 }