diff --git a/webapp/controller/BaseAuthedController.class.php b/webapp/controller/BaseAuthedController.class.php
index 3e6179d..6e140e2 100644
--- a/webapp/controller/BaseAuthedController.class.php
+++ b/webapp/controller/BaseAuthedController.class.php
@@ -332,15 +332,4 @@ class BaseAuthedController extends BaseController {
         DynData::decV($x, $y, $decVal);
     }
 
-    public function _checkSeason($userInfo, $initRankMeta, $currSeasonMeta)
-    {
-        #$rankMeta = mt\Rank::get(1);
-        if ($initRankMeta && $userInfo['rank'] < $initRankMeta['rank']) {
-            $this->_updateUserInfo(array(
-                 'rank' => $initRankMeta['rank'],
-                 'score' => $initRrankMeta['min_score'],
-            ));
-        }
-    }
-
 }
diff --git a/webapp/controller/SeasonController.class.php b/webapp/controller/SeasonController.class.php
index 8f65518..c66cc68 100644
--- a/webapp/controller/SeasonController.class.php
+++ b/webapp/controller/SeasonController.class.php
@@ -17,4 +17,8 @@ class SeasonController extends BaseAuthedController {
     {
     }
 
+    private function precheck($userInfo)
+    {
+    }
+
 }
diff --git a/webapp/controller/UserController.class.php b/webapp/controller/UserController.class.php
index c454eb3..49170af 100644
--- a/webapp/controller/UserController.class.php
+++ b/webapp/controller/UserController.class.php
@@ -5,15 +5,12 @@ require_once('models/Hero.php');
 
 require_once('mt/Parameter.php');
 require_once('mt/Drop.php');
-require_once('mt/EquipUpgrade.php');
 require_once('mt/Season.php');
-require_once('mt/SeasonPoint.php');
-require_once('mt/RankReward.php');
-require_once('mt/Equip.php');
 require_once('mt/Hero.php');
 require_once('mt/Rank.php');
 
 require_once('services/PropertyChgService.php');
+require_once('services/SeasonService.php');
 
 use phpcommon\SqlHelper;
 use models\User;
@@ -43,15 +40,14 @@ class UserController extends BaseAuthedController {
 
     private function loginCheck($userInfo)
     {
-        if (!$this->_checkSeason()) {
-            return false;
-        }
-        return true;
+        $seasonService = new services\SeasonService();
+        return $seasonService->checkSeason($userInfo);
     }
 
     private function createNewUser($userName, $avatarUrl)
     {
-        $rankMeta = mt\Rank::get(1);
+        $initRankMeta = mt\Rank::getInitRank();
+        $currSeasonMeta = mt\Season::getCurrentSeason();
         SqlHelper::upsert
             ($this->_getSelfMysql(),
              't_user',
@@ -70,10 +66,11 @@ class UserController extends BaseAuthedController {
                  'head_frame' => 19003,
                  'level' => 100,
                  'exp' => 0,
-                 'rank' => $rankMeta ? $rankMeta['rank'] : 0,
-                 'score' => $rankMeta ? $rankMeta['min_score'] : 0,
+                 'rank' => $initRankMeta ? $initRankMeta['rank'] : 0,
+                 'score' => $initRankMeta ? $initRankMeta['min_score'] : 0,
                  'head_id' => 18001,
                  'hero_id' => 30100,
+                 'last_season_id' => $currSeasonMeta ? $currSeasonMeta['id'] : 0,
                  'createtime' => $this->_getNowTime(),
                  'modifytime' => $this->_getNowTime(),
              )
diff --git a/webapp/mt/Rank.php b/webapp/mt/Rank.php
index b939252..64190a0 100644
--- a/webapp/mt/Rank.php
+++ b/webapp/mt/Rank.php
@@ -11,6 +11,11 @@ class Rank {
         return getXVal(self::getMetaList(), $id);
     }
 
+    public static function getInitRank()
+    {
+        return self::get(1);
+    }
+
     protected static function getMetaList()
     {
         if (!self::$metaList) {
diff --git a/webapp/services/SeasonService.php b/webapp/services/SeasonService.php
new file mode 100644
index 0000000..f302ab5
--- /dev/null
+++ b/webapp/services/SeasonService.php
@@ -0,0 +1,38 @@
+<?php
+
+namespace services;
+
+require_once('mt/Rank.php');
+require_once('mt/Season.php');
+require_once('models/User.php');
+
+use models\User;
+
+class SeasonService extends BaseService {
+
+    public function checkSeason($userInfo)
+    {
+        $initRankMeta = mt\Rank::getInitRank();
+        $currRankMeta = mt\Rank::get($userInfo['rank']);
+        $dropRankMeta = mt\Rank::get($currRankMeta ? $currRankMeta['drop_rank'] : 0);
+        $currSeasonMeta = mt\Season::getCurrentSeason();
+        if ($currSeasonMeta && $currSeasonMeta['id'] != $userInfo['last_season_id']) {
+            //掉档
+            if ($dropRankMeta) {
+                myself()->_updateUserInfo(array(
+                    'rank' => $dropRankMeta['rank'],
+                    'score' => $dropRankMeta['min_score'],
+                ));
+            }
+        }
+        if ($initRankMeta && $userInfo['rank'] < $initRankMeta['rank']) {
+            myself()->_updateUserInfo(array(
+                 'rank' => $initRankMeta['rank'],
+                 'score' => $initRankMeta['min_score'],
+            ));
+            return false;
+        }
+        return true;
+    }
+
+}