diff --git a/webapp/services/MissionService.php b/webapp/services/MissionService.php
index b15c775b..21ac0deb 100644
--- a/webapp/services/MissionService.php
+++ b/webapp/services/MissionService.php
@@ -697,7 +697,12 @@ class MissionService extends BaseService {
 
     public function cancelOfferRewardMission($missionId, $propertyChgService)
     {
-        $this->removeOfferRewardMission($missionId);
+        foreach ($this->offerRewartdMission['missions'] as &$mission) {
+            if ($mission['mission_id'] > $missionId) {
+                $mission['sendtime'] = 0;
+                $mission['objects'] = array();
+            }
+        }
         $propertyChgService->addHeroChg();
         $propertyChgService->addGunChg();
         myself()->_rspData(array(