diff --git a/sql/gamedb.sql b/sql/gamedb.sql
index 7d212fcc..88fe6a8d 100644
--- a/sql/gamedb.sql
+++ b/sql/gamedb.sql
@@ -57,6 +57,25 @@ CREATE TABLE `t_user` (
 ) ENGINE=InnoDB AUTO_INCREMENT=10001 DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
 /*!40101 SET character_set_client = @saved_cs_client */;
 
+--
+-- Table structure for table `t_bigdata`
+--
+
+DROP TABLE IF EXISTS `t_bigdata`;
+/*!40101 SET @saved_cs_client     = @@character_set_client */;
+/*!40101 SET character_set_client = utf8 */;
+CREATE TABLE `t_bigdata` (
+  `idx` bigint NOT NULL AUTO_INCREMENT COMMENT '自增id',
+  `account_id` varchar(60) CHARACTER SET utf8 NOT NULL COMMENT 'account_id',
+  `type` varchar(60) CHARACTER SET utf8 NOT NULL COMMENT 'type',
+  `data` mediumblob COMMENT 'data',
+  `createtime` int(11) NOT NULL DEFAULT '0' COMMENT '创建时间',
+  `modifytime` int(11) NOT NULL DEFAULT '0' COMMENT '修改时间',
+  PRIMARY KEY (`idx`),
+  UNIQUE KEY `account_id_type` (`account_id`, `type`)
+) ENGINE=InnoDB AUTO_INCREMENT=10000 DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
+/*!40101 SET character_set_client = @saved_cs_client */;
+
 --
 -- Table structure for table `t_hero`
 --
diff --git a/webapp/bootstrap/constant.php b/webapp/bootstrap/constant.php
index 8f38f857..7e22cfcb 100644
--- a/webapp/bootstrap/constant.php
+++ b/webapp/bootstrap/constant.php
@@ -29,11 +29,6 @@ define('TN_WEEKLY_RECHARGE_UPGRADE_TIMES', 10004);
 define('TN_WEEKLY_SHARE_GAMES', 10005);
 define('TN_WEEKLY_END', 10005);
 
-define('TN_OFFER_REWARD_BEGIN', 11001);
-define('TN_OFFER_REWARD_RECEIVE', 11002);
-define('TN_OFFER_REWARD_REFRESH', 11003);
-define('TN_OFFER_REWARD_END', 11005);
-
 const kHAT_Begin = 0;
 const kHAT_Hp = 1;
 const kHAT_HPRecover = 2;
diff --git a/webapp/models/BigData.php b/webapp/models/BigData.php
new file mode 100644
index 00000000..9705f2a9
--- /dev/null
+++ b/webapp/models/BigData.php
@@ -0,0 +1,47 @@
+<?php
+
+namespace models;
+
+use mt;
+use phpcommon\SqlHelper;
+
+class BigData extends BaseModel {
+
+    public static function getData($type)
+    {
+        $row = SqlHelper::ormSelectOne(
+            myself()->_getSelfMysql(),
+            't_bigdata',
+            array(
+                'account_id' => myself()->_getAccountId(),
+                'type' => $type,
+            )
+        );
+        return $row ? $row['data'] : null;
+    }
+
+
+    public static function setData($type, $data)
+    {
+        SqlHelper::upsert
+            (myself()->_getSelfMysql(),
+             't_bigdata',
+             array(
+                 'account_id' => myself()->_getAccountId(),
+                 'type' => $type
+             ),
+             array(
+                 'data' => $data,
+                 'modifytime' => myself()->_getNowTime()
+             ),
+             array(
+                 'account_id' => myself()->_getAccountId(),
+                 'type' => $type,
+                 'data' => $data,
+                 'createtime' => myself()->_getNowTime(),
+                 'modifytime' => myself()->_getNowTime()
+             )
+            );
+    }
+
+}
diff --git a/webapp/services/MissionService.php b/webapp/services/MissionService.php
index c938adc2..d6141470 100644
--- a/webapp/services/MissionService.php
+++ b/webapp/services/MissionService.php
@@ -368,6 +368,10 @@ class MissionService extends BaseService {
         break;
         case mt\Task::OFFER_REWARD_COND:
         {
+            $info = $this->getOfferRewardMissinoInfo($missionDto['mission_id']);
+            if ($info) {
+
+            }
         }
         break;
         default:
@@ -515,4 +519,9 @@ class MissionService extends BaseService {
         return $missions;
     }
 
+    private function getOfferRewardMissionInfo($missionId)
+    {
+
+    }
+
 }