At present, there are many materials for rhinoplasty, which can be roughly divided into three categories: the first category is liquid materials, that is, injection materials, such as hyaluronic acid and bone powder; The second is solid materials, solid implants; The third is autologous material, including costal cartilage and septal cartilage. Injection is not advocated, mainly as an emergency method. Injection still has some potential risks. When drugs touch blood vessels, it will cause embolism and nose necrosis. It is recommended to use solid materials. Solid materials are divided into their own materials and foreign materials. Foreign bodies are generally silica gel and swelling. Different situations are suitable for different materials. No material is the best, but which material is the most suitable. Silicone gel is generally suitable for situations where the bridge of the nose is not very flat, that is, it is not used much and the skin is very slack. It is a good material to clamp the bridge of the nose. If the nose is short, you need a material with good support. The common materials with strong supporting force are carina or costal cartilage. This material is better. Don't use unsupported, it will cause sliding. Bulging overcomes the shortcomings of silica gel, such as light transmission and easy movement, which can lengthen the nose and has certain supporting force, so it is widely used now. Costal cartilage is popular in recent years, and it is still hoped that costal cartilage can be used as a nasal lengthening material for severe short nose.