Autologous fat comes from a wide range of sources, and can be extracted from subcutaneous fat in many parts of the body, such as upper arms, abdomen and thighs. It is currently believed that the inner thigh, buttocks, abdomen and other plate layer fat, fine particles, high survival rate, foreign scholars have found that the lipoprotein enzyme activity of the thigh fat tissue is high, and the survival rate after transplantation is also high, so the thighs, especially the inner thighs are the ideal source of facial filler. The face can be chosen as a site for autologous fat filling: