This article is based on the analysis of materials moving in food expandor and discussion on expandingPrinciple, It puts forwand the trendency of expanded food developing.

本文在食品化机腔内物料运动分析及化机理探讨，提出了化食品方向。

Expandor is implanted in the normal skin near facial scar,expandel gradually.During the second operation flap corresponding to the scar which is incised is created and employed.

方法设计面部瘢痕周围正常皮肤下植入扩张器,皮肤扩张后再切除瘢痕组织,用扩张皮瓣修复。