diff --git a/i_entrance/j_get_user_info.php b/i_entrance/j_get_user_info.php
index a3c291ac..757bf350 100644
--- a/i_entrance/j_get_user_info.php
+++ b/i_entrance/j_get_user_info.php
@@ -9,7 +9,7 @@ $userID = Session::getUserID();
 // 외부 파라미터
 
 $db = RootDB::db();
-$member = $db->queryFirstRow('SELECT `id`, `name`, `grade`, `picture`, reg_date, third_use, acl FROM `member` WHERE `NO` = %i', $userID);
+$member = $db->queryFirstRow('SELECT `id`, `name`, `grade`, `picture`, reg_date, third_use, acl, oauth_type, oauth_info FROM `member` WHERE `NO` = %i', $userID);
 
 if(!$member['picture']){
     $picture = ServConfig::getSharedIconPath().'/default.jpg';
@@ -30,6 +30,9 @@ else{
     }
 }
 
+$oauthInfo = Json::decode($member['oauth_info'])??[];
+$loginTokenValid = $oauthInfo['OTPValidUntil']??null;
+
 if($member['grade'] == 6) {
     $grade = '운영자';
 } elseif($member['grade'] == 5) {
@@ -81,5 +84,8 @@ Json::die([
     'global_salt'=>RootDB::getGlobalSalt(),
     'join_date'=>$member['reg_date'],
     'third_use'=>($member['third_use']!=0),
-    'acl'=>$acl
+    'acl'=>$acl,
+    'oauth_type'=>$member['oauth_type'],
+    'login_token_valid'=>$loginTokenValid
+
 ]);
diff --git a/i_entrance/user_info.php b/i_entrance/user_info.php
index fa046738..7203a283 100644
--- a/i_entrance/user_info.php
+++ b/i_entrance/user_info.php
@@ -23,6 +23,7 @@ require(__dir__.'/../vendor/autoload.php');
         <?=WebUtil::printJS('../e_lib/jquery-3.3.1.min.js')?>
         <?=WebUtil::printJS('../e_lib/bootstrap.bundle.min.js')?>
         <?=WebUtil::printJS('../e_lib/sha512.min.js')?>
+        <?=WebUtil::printJS('../e_lib/moment.min.js')?>
         <?=WebUtil::printJS('../js/func.js')?>
         <?=WebUtil::printJS('../js/user_info.js')?>
         <?=WebUtil::printJS('../d_shared/menu.js')?>
@@ -87,6 +88,14 @@ require(__dir__.'/../vendor/autoload.php');
             </td>
             <td colspan="3">개인정보 3자 제공 동의 : <span id="slot_third_use"></span><button type="button" id="third_use_disallow">철회</button></td>
         </tr>
+        <tr>
+            <th class="bg1">인증 방식</th>
+            <td colspan="2">
+                <span id="slot_oauth_type"></span>
+            </td>
+            <td colspan="3">
+                <span id="slot_token_valid_until"></span>까지 유효<button type="button" id="expand_login_token">초기화</button></td>
+        </tr>
         <tr>
             <th class="bg1"></th>
             <th class="bg1" colspan="2">회원 탈퇴</th>
diff --git a/js/user_info.js b/js/user_info.js
index 027473b5..0ed86887 100644
--- a/js/user_info.js
+++ b/js/user_info.js
@@ -20,6 +20,16 @@ function fillUserInfo(result){
     if(result.third_use){
         $('#third_use_disallow').show();
     }
+    $('#slot_oauth_type').text(result.oauth_type);
+    if(result.oauth_type != 'NONE'){
+        $('#slot_token_valid_until').text(result.login_token_valid);
+    }
+    else{
+        $('#slot_token_valid_until').parent().html('');
+    }
+    
+
+
 }
 
 function changeIconPreview(){
@@ -217,6 +227,37 @@ function deleteMe(){
     });
 }
 
+function extendAuth(){
+    var validUntil = $('#slot_token_valid_until').html();
+    var availableAt = moment(validUntil).subtract(5, 'days').format('YYYY-MM-DD HH:mm:ss');
+    var now = moment().format('YYYY-MM-DD HH:mm:ss');
+
+    if(now < availableAt){
+        alert('{0}부터 초기화할 수 있습니다.'.format(availableAt));
+        return false;
+    }
+
+    if(!confirm('로그아웃됩니다. 진행할까요?')){
+        return;
+    }
+
+    $.ajax({
+        type:'post',
+        url:'../oauth_kakao/j_reset_token.php',
+        dataType:'json',
+    }).then(function(result){
+        if(!result.result){
+            alert(result.reason);
+        }
+        else{
+            alert('초기화했습니다. 다시 로그인해 주십시오.');
+            location.href='../';
+        }
+    },function(){
+        alert('알 수 없는 이유로 로그인 토큰 연장에 실패했습니다.');
+    });
+}
+
 $(function(){
     $('#slot_icon, #slot_new_icon').attr('src', pathConfig.sharedIcon+'/default.jpg');
     $.ajax({
@@ -255,4 +296,6 @@ $(function(){
             deleteMe(e);
         }
     });
+
+    $('#expand_login_token').click(extendAuth);
 })
diff --git a/oauth_kakao/j_reset_token.php b/oauth_kakao/j_reset_token.php
new file mode 100644
index 00000000..d8abaa11
--- /dev/null
+++ b/oauth_kakao/j_reset_token.php
@@ -0,0 +1,45 @@
+<?php
+namespace sammo;
+
+require(__dir__.'/../vendor/autoload.php');
+
+use \kakao\Kakao_REST_API_Helper as Kakao_REST_API_Helper;
+
+$session = Session::requireLogin([
+    'reason'=>'로그인이 되어있지 않습니다'
+]);
+
+
+$userID = Session::getUserID();
+
+$oauthInfo = Json::decode(RootDB::db()->queryFirstField('SELECT oauth_info from member where no=%i',$userID))??[];
+if(!$oauthInfo){
+    Json::die([
+        'result'=>false,
+        'reason'=>'초기화 가능한 로그인 상태가 아닙니다.'
+    ]);
+}
+
+$OTPValidUntil = $oauthInfo['OTPValidUntil']??null;
+
+$now = TimeUtil::DatetimeNow();
+$expectedDate = TimeUtil::DatetimeFromNowDay(5);
+
+if($expectedDate <= $OTPValidUntil){
+    Json::die([
+        'result'=>false,
+        'reason'=>'아직 연장 가능하지 않습니다.'
+    ]);
+}
+
+unset($oauthInfo['OTPValidUntil']);
+RootDB::db()->update('member', [
+    'oauth_info'=>Json::encode($oauthInfo)
+], 'no=%i', $userID);
+
+$session->logout();
+
+Json::die([
+    'result'=>true,
+    'reason'=>'초기화 완료.'
+]);