diff --git a/css/login.css b/css/login.css
index d8c3d4ff..66fdacf3 100644
--- a/css/login.css
+++ b/css/login.css
@@ -52,8 +52,8 @@ input::-webkit-input-placeholder {
 
 }
 
-.login-button{
-   margin-top: 5px;
+.login_btn_group{
+    margin-top: 5px;
 }
 
 .login-register{
diff --git a/index.php b/index.php
index ed2d54fa..0e161a0c 100644
--- a/index.php
+++ b/index.php
@@ -64,8 +64,17 @@ function getOAuthToken(mode, scope_list){
 
 function sendTempPasswordToKakaoTalk(){
     $.post({
-        url:'j_change_pw.php',
+        url:'oauth_kakao/j_login_oauth.php',
         dataType:'json'
+    }).then(function(obj){
+        var t = $.Deferred();
+        if(!obj.result){
+            t.reject();
+        }
+        return $.post({
+            url:'oauth_kakao/j_change_pw.php',
+            dataType:'json'
+        });
     }).then(function(obj){
         if(!obj.result){
             alert(obj.reason);
@@ -163,7 +172,15 @@ function postOAuthResult(result){
                     <div class="form-group row">
                         <div class="col-5 col-md-4 " style="position:relative;"><button type="button" onclick="getOAuthToken('login', ['account_email','talk_message']);" id="btn_kakao_login" title="카카오톡으로 가입&amp;로그인"></button></div>
                         <div class="col-7 col-md-8">
-                            <button type="submit" class="btn btn-primary btn-lg btn-block login-button">로그인</button>
+                            <div class="btn-group btn-group-lg d-flex login_btn_group" role="group">
+                                <button type="submit" class="btn btn-primary login-button w-100">로그인</button>
+                                <div class="btn-group" role="group">
+                                    <button type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"> </button>
+                                    <div class="dropdown-menu dropdown-menu-right" aria-labelledby="btnGroupDrop1">
+                                        <a class="dropdown-item" href="javascript:getOAuthToken('change_pw', 'talk_message');">비밀번호 초기화</a>
+                                    </div>
+                                </div>
+                            </div>
                         </div>
                     </div>
                 </form>
diff --git a/oauth_kakao/j_change_pw.php b/oauth_kakao/j_change_pw.php
index 1f621042..37b23c3a 100644
--- a/oauth_kakao/j_change_pw.php
+++ b/oauth_kakao/j_change_pw.php
@@ -5,7 +5,7 @@ require(__dir__.'/../vendor/autoload.php');
 
 use \kakao\Kakao_REST_API_Helper as Kakao_REST_API_Helper;
 
-$nowDate = TimeUtil::DatetimeNow();
+$now = TimeUtil::DatetimeNow();
 
 $session = Session::requireLogin([
     'reason'=>'로그인이 되어있지 않습니다'
@@ -13,8 +13,6 @@ $session = Session::requireLogin([
 $userID = Session::getUserID();
 $access_token = $session->access_token;
 $expires = $session->expires;
-$refresh_token = $session->refresh_token;
-$refresh_token_expires = $session->refresh_token_expires;
 
 if(!$access_token || !$expires){
     Json::die([
@@ -27,44 +25,37 @@ if(!$access_token || !$expires){
 //TODO: join과 login의 동작이 비슷하다. helper class로 묶자.
 $restAPI = new Kakao_REST_API_Helper($access_token);
 
-if($expires < $nowDate && (!$refresh_token || ($refresh_token_expires < $nowDate))){
+$session->logout();
+
+if($expires < $now){
     Json::die([
         'result'=>false,
-        'reason'=>'로그인 토큰 만료.'.$refresh_token_expires.' 다시 카카오로그인을 수행해주세요.'
+        'reason'=>'로그인 토큰 만료. 카카오 로그인을 먼저 수행해주세요.'
     ]);
 }
 
-if($expires < $nowDate){
-    $session->kaccount_email = null;
-    $email = null;
-
-    $result = $restAPI->refresh_access_token($refresh_token);
-    if(!isset($result)){
-        Json::die([
-            'result'=>false,
-            'reason'=>'카카오 로그인 과정 중 추가 갱신 절차를 실패했습니다'
-        ]);
-    }
-
-    $access_token = $result['access_token'];
-    $expires = TimeUtil::DatetimeFromNowSecond($result['expires_in']);
-    if(isset($result['refresh_token'])){
-        $refresh_token = Util::array_get($result['refresh_token']);
-        $refresh_token_expires = TimeUtil::DatetimeFromNowSecond($result['refresh_token_expires_in']);
-    }
-}
-
 RootDB::db()->query("lock tables member write, member_log write");
 
-$isUser = RootDB::db()->queryFirstRow(
-    'SELECT count(`no`) from member where no=%i',$userID);
-if(!$isUser){
+$oauthInfo = Json::decode(RootDB::db()->queryFirstField('SELECT oauth_info from member where no=%i',$userID))??[];
+if(!$oauthInfo){
     Json::die([
         'result'=>false,
-        'reason'=>'회원이 아닙니다. 관리자에게 문의해주세요.'
+        'reason'=>'제대로 로그인이 이루어져 있지 않습니다.'
     ]);
 }
 
+$nextPasswordChange = $oauthInfo['nextPasswordChange']??null;
+if($nextPasswordChange && $now < $nextPasswordChange){
+    Json::die([
+        'result'=>false,
+        'reason'=>'비밀번호를 초기화한지 얼마 지나지 않았습니다.'
+    ]);
+}
+
+$nextPasswordChange = TimeUtil::DatetimeFromNowHour(4);
+$oauthInfo['nextPasswordChange'] = $nextPasswordChange;
+
+
 $newPassword = Util::randomStr(6);
 $tmpPassword = Util::hashPassword(RootDB::getGlobalSalt(), $newPassword);
 $newSalt = bin2hex(random_bytes(8));
@@ -89,12 +80,13 @@ if($sendResult['code'] < 0){
 
 RootDB::db()->update('member', [
     'pw'=>$newFinalPassword,
-    'salt'=>$newSalt
+    'salt'=>$newSalt,
+    'oauth_info'=>Json::encode($oauthInfo),
 ],'no=%i', $userID);
 
 RootDB::db()->insert('member_log', [
     'member_no'=>$userID,
-    'date'=>$nowDate,
+    'date'=>$now,
     'action_type'=>'change_pw',
     'action'=>Json::encode([
         'type'=>'kakao',
diff --git a/src/sammo/Session.php b/src/sammo/Session.php
index f3f0ced6..392c0308 100644
--- a/src/sammo/Session.php
+++ b/src/sammo/Session.php
@@ -174,7 +174,6 @@ class Session
         $this->set('userGrade', $grade);
         $this->set('acl', $acl);
         $this->set('reqOTP', $reqOTP);
-        $this->set('access_token', null);
         return $this;
     }