diff --git a/webapp/services/BattleDataService.php b/webapp/services/BattleDataService.php
index 60716048..b815087d 100644
--- a/webapp/services/BattleDataService.php
+++ b/webapp/services/BattleDataService.php
@@ -461,11 +461,25 @@ class BattleDataService extends BaseService {
         $instanceId = getReqVal('pve_instance_id', 0);
         $instanceMode = getReqVal('pve_instance_mode', 0);
         $pveRankScore = getReqVal('pve_rank_score', 0);
+        $userInfo = myself()->_getOrmUserInfo();
         $this->pveGeminiMeta = mt\PveGemini::get($instanceId);
+        if ($this->pveGeminiMeta) {
+            if (!($userInfo['pve_instance_id'] == $instanceId ||
+                  $userInfo['pve_instance_id'] == $instanceId + 1)) {
+                $this->pveGeminiMeta = null;
+            }
+        }
         $this->pveGeminiMetaMode = mt\PveGeminiMode::get($instanceMode);
         if ($this->pveGeminiModeMeta) {
             $this->instanceRank = mt\PveGeminiMode::calcStar($this->pveGeminiModeMeta, $pveRankScore);
         }
+        if (getReqVal('pve_kill_boss', 0) == 1) {
+            if ($this->pveGeminiMeta) {
+                myself()->_updateUserInfo(array(
+                    'pve_instance_id' => $instanceId
+                ));
+            }
+        }
     }
 
     private function rewardFragmentPvp()