The raw material for filling the chest cavity is taken from itself, so the material is non-toxic and harmless to the human body, and the human body itself will not produce immune reaction and rejection reaction; Will not cause changes in the endocrine environment of the human body. It will not cause harm to the breast itself, so it has little effect on future fertility and breastfeeding; Soft to the touch, natural in shape and delicate in skin. Once the filled autologous fat survives, the effect can be maintained for a long time. The filling amount is mainly determined according to the basic situation of the chest.