The external nose is located in the center of the face, and the external nose occupies an important position in the beauty of appearance. Collapsed nose is a common Asian nasal defect, can be improved by rhinoplasty or autologous fat filling, etc., as follows: 1, rhinoplasty more than the use of implants or autologous cartilage implants, prosthesis according to the material can be divided into solid silicone rubber, expanded polytetrafluoroethylene, high-density polyethylene, hydroxyapatite artificial bone, etc.. Autologous cartilage is usually taken from autologous nasal septum cartilage, autologous ear cartilage and autologous rib cartilage. Autologous cartilage used as implant material for rhinoplasty has many advantages, including good biological resistance, strong resistance to infection, mostly viable even in poor blood supply, good elasticity, easy to sculpt and shape, low incidence of adverse reactions such as bulging and resorption; 2, the advantages of autologous fat particles transplantation include good biocompatibility, easy to take material, abundant tissue sources, easy to operate, safe and reliable, and easy to easy to survive. With free fat particles injection, the transplantation is less traumatic and leaves no obvious scar in the donor and recipient areas, and the recipient area has a uniform and natural shape without body shadows, which can be repeatedly injected and easily shaped. The disadvantage is that there is a certain rate of absorption, and fat liquefaction and other adverse reactions can occur.