diff --git a/webapp/controller/BattleController.class.php b/webapp/controller/BattleController.class.php
index d8f30fb3..0d25618a 100644
--- a/webapp/controller/BattleController.class.php
+++ b/webapp/controller/BattleController.class.php
@@ -996,6 +996,24 @@ class BattleController extends BaseAuthedController {
         $key = 'dec.battle.item.' . $roomUuid . ':' . myself()->_getAccountId();
         $data = $r->get($key);
         if (empty($data)) {
+            $data = array();
+            foreach ($member['battle_items'] as $item) {
+                $itemCount = Bag::getItemCount($item['item_id']);
+                if ($itemCount >= $item['item_num']) {
+                    $data['item_id'] = $item['item_id'];
+                    $data['item_num'] = $item['item_num'];
+                    myself()->_decItems(array(
+                        array(
+                            'item_id' => $item['item_id'],
+                            'item_num' => $item['item_num'],
+                        )
+                    ));
+                } else {
+                    $data['item_id'] = $item['item_id'];
+                    $data['item_num'] = 0;
+                }
+            }
+            $r->setPx($key, json_encode($data), 1000 * 60 * 30);
         } else {
             $info['items'] = json_decode($data, true);
         }