diff --git a/worldsrv/action_nian.go b/worldsrv/action_nian.go
index eb9ed35..8a6bf7d 100644
--- a/worldsrv/action_nian.go
+++ b/worldsrv/action_nian.go
@@ -479,6 +479,9 @@ func CSNianAttack(s *netlib.Session, packetid int, data interface{}, sid int64)
 						if int32(otherItemNum)+p.WelfData.NianData.OtherAwardNum[info.Id] > info.DropUp {
 							otherItemNum = int64(info.DropUp - p.WelfData.NianData.OtherAwardNum[info.Id])
 						}
+						if p.WelfData.NianData.OtherAwardNum == nil {
+							p.WelfData.NianData.OtherAwardNum = make(map[int32]int32)
+						}
 						p.WelfData.NianData.OtherAwardNum[info.Id] += int32(otherItemNum)
 						bossDieOther = append(bossDieOther, &model.Item{
 							ItemId:  otherItemId,