diff --git a/webapp/services/BattleBoxService.php b/webapp/services/BattleBoxService.php
index ed6affa2..db16d810 100644
--- a/webapp/services/BattleBoxService.php
+++ b/webapp/services/BattleBoxService.php
@@ -8,14 +8,36 @@ class BattleBoxService {
 
     const DAILY_PHASE_DROP_LAST_TIME_KEY = ':';
     const DAILY_PHASE_DROP_TOTAL_KEY = ':';
+    const DAILY_PHASE_ALLOC_NUM_KEY = ':';
+    const DAILY_PHASE_ALREADY_ALLOC_NUM_KEY = ':';
 
     public static function allocBox()
     {
         if (!myself()->_switchIsOpen('bigEventBoxDrop')) {
             return 0;
         }
+        $boxNum = 0;
         $currPhase = self::getCurrentPhase();
-
+        $allocableNum = self::getDailyPhaseAllocNum($currPhase, myself()->_getNowDaySeconds());
+        $alreadyAllocNum = self::getDailyPhaseAlreadyAllocNum($currPhase, myself()->_getNowDaySeconds());
+        if ($allocNum > 0) {
+            $lstVal = mt\Parameter::getListValue('battle_event_loot_per_game');
+            if ($allocableNum <= 0 || empty($lstVal) || count($lstVal) < 2) {
+                myself()->_rspData(array(
+                    'box_num' => 0
+                ));
+                return;
+            }
+            $rnd = rand($lstVal[0], $lstVal[1]);
+            if ($rnd <= 0) {
+                myself()->_rspData(array(
+                    'box_num' => 0
+                ));
+                return;
+            }
+            $boxNum = min($rnd, $allocableNum);
+        }
+        return $boxNum;
     }
 
     public static function getCurrentPhase()
@@ -39,6 +61,22 @@ class BattleBoxService {
         return empty($num) ? 0 : $num;
     }
 
+    private static function getDailyPhaseAllocNum($phase, $time)
+    {
+        $key = self::DAILY_PHASE_ALLOC_NUM_KEY . $phase . ':' . $time;
+        $r = $this->_getRedis($key);
+        $num = $r->get($key);
+        return empty($num) ? 0 : $num;
+    }
+
+    private static function getDailyPhaseAlreadyAllocNum($phase, $time)
+    {
+        $key = self::DAILY_PHASE_ALREADY_ALLOC_NUM_KEY . $phase . ':' . $time;
+        $r = $this->_getRedis($key);
+        $num = $r->get($key);
+        return empty($num) ? 0 : $num;
+    }
+
     private static function incAlreadyTodayAllocBoxNum($val)
     {
         $key = 'box_daily_already_alloc_num:' . myself()->_getNowDaySeconds();