Hyaluronic acid, also known as hyaluronic acid, is an acidic mucopolysaccharide widely found in living organisms. In different species and tissues, the molecular structure of hyaluronic acid is the same, with no differences between species and tissues. However, most regular plastic surgeons will not agree to inject the tip of the nose with hyaluronic acid, the reason is that the tip of the nose is close to the skin and the structures below, and is the end of the blood circulation. If other substances are injected, the normal blood flow of the skin of the tip of the nose will be seriously affected, which will easily cause ischemia and necrosis of the skin of the tip of the nose (including part of the subcutaneous tissue). If the operator is inexperienced and inadvertently injects hyaluronic acid into blood vessels, it can lead to vascular embolism, causing blindness, pulmonary embolism and other serious consequences. Therefore, in clinical practice, injecting substances that are not easily and quickly absorbed at the tip of the nose is a typical high-risk behavior. As a filler material for facial injectable plastic surgery, hyaluronic acid is considered to have low rejection reaction and high safety. Considering that it is generally difficult to modify a nose job when the result is poor after a prosthesis, hyaluronic acid rhinoplasty has become an ideal choice. However, when choosing to inject hyaluronic acid, candidates should always choose regular products and not trust irregular organizations for the sake of cheapness.