1.Solid silicone. Advantages: good biocompatibility, low price, one of the preferred clinical materials for rhinoplasty. Disadvantages: The complication rate can be 5%-20%. Can not establish blood circulation with the body, the formation of tissue connection, only fibrous tissue wrapping, so the skin can be worn out in the tissue weakness, due to the contracture of the fibrous envelope, can cause the body surface projection of silicone prosthesis, and affect the appearance effect. 2, artificial bone material, mainly refers to hydroxyapatite. Advantages: good biocompatibility, non-toxic, non-teratogenic, allergenic and carcinogenic side effects Disadvantages: no support, so the effect of the low tip of the nose is poor. 3, expanded polytetrafluoroethylene (ePTFE): from the medical point of view, is currently the most ideal biological tissue substitute. Advantages: good biocompatibility and unique microporous structure, non-toxic, non-cancerous, non-allergenic and other side effects, and human tissue cells and blood vessels can grow into its microporous, forming tissue connections, as autologous tissue. The effect of rhinoplasty is very satisfactory. Disadvantages: expensive, simple rhinoplasty also need tens of thousands of dollars, and affect its universal application. 4.Liquid silicone. Advantages: easy to operate and the advantages of minimally invasive injection are easily accepted by patients. Disadvantages: Clinical observation proves that after the operation, it is easy to cause lasting erythema, swelling, skin necrosis and granuloma on the nose, and liquid silicone can spread around to infiltrate and penetrate, without clear boundaries and difficult to deal with. Many domestic scholars advocate the prohibition of use or cautious use. For injectable rhinoplasty, at present, the main materials for injectable rhinoplasty are hyaluronic acid, Ivanhoe and Avef. Their common disadvantage is that the effect of rhinoplasty can only last 10 months to 1 year, so it is more suitable for candidates with strong financial ability. 5, silicone rubber after long-term clinical observation of plastic surgeons, the plastic surgery industry is more commonly used material is silicone rubber. Advantages: the price is relatively cheap, and the technical requirements of the doctor is not high, the general doctor is relatively easy to grasp the method of removal and placement. Disadvantages: the material is relatively hard and does not feel realistic. The material is relatively hard and does not feel realistic, and it will be translucent in daylight. Many patients reflect that in the highlight of the place, will find their part of the augmentation shiny, feel sweaty. 6, expanded body material, this type of material has been widely used in foreign plastic surgery industry. Advantages: extremely stable in nature, will not have any reaction with other substances; non-toxic, carcinogenic, teratogenic; soft texture and easy to sculpt plasticity; after surgery, the patient that the appearance is not ideal can be more easily removed intact, without leaving any deficiencies. Its biggest advantage is that it feels realistic and opaque, and blood vessels can be inserted into this material to make it more solid. Disadvantage: Because of good curing, the material becomes one with the body, and it is more difficult to remove than silicone rubber when needed. Higher price than silicone rubber. Sculpture requires a lot of experience. 7.Autogenous bone and cartilage transplantation. Advantages: no rejection reaction, can exist permanently. Disadvantages: bone and cartilage have to be taken from the patient, which is more painful; it cannot be shaped in advance, which prolongs the operation time; after being buried for a long time, slight absorption deformation can also occur.