diff --git a/src/server/game/mod/decorate/Decorate.go b/src/server/game/mod/decorate/Decorate.go
index bf0e2de5..7fb9d4f0 100644
--- a/src/server/game/mod/decorate/Decorate.go
+++ b/src/server/game/mod/decorate/Decorate.go
@@ -98,7 +98,7 @@ func (d *Decorate) GetDecorateCostItem(areaId, decorateId int, decorateOffIsExis
 	id := decorateCfg.GetIdBySenceAndLv(areaId, decorateId)
 	if decorateOffIsExist {
 		offRate := limitedTimeEventCfg.GetDecorateOffDiscount(areaId, decorateId)
-		itemNum = int(math.Round(float64(itemNum) * float64(offRate) / 100))
+		itemNum = int(math.Ceil(float64(itemNum) * float64(offRate) / 100))
 	}
 	items := []*item.Item{item.NewItem(item.ITEM_STAR_ID, itemNum)}
 	partCostInfo := d.PartCost[id]
@@ -157,7 +157,7 @@ func (d *Decorate) DecorateAll(star int, decorateOffIsExist bool) ([]*item.Item,
 		needStar := decorateCfg.GetStarCost(d.AreaId, v)
 		if decorateOffIsExist {
 			offRate := limitedTimeEventCfg.GetDecorateOffDiscount(d.AreaId, v)
-			needStar = int(math.Round(float64(needStar) * float64(offRate) / 100))
+			needStar = int(math.Ceil(float64(needStar) * float64(offRate) / 100))
 		}
 		if star < needStar {
 			break