Lip augmentation belongs to the internet vocabulary, which refers to the formation of full and three-dimensional lip shape by patients after injecting hyaluronic acid or fat, also known as lip augmentation by injection. Lip augmentation seems to be a very simple surgery, but the operator needs professional knowledge as well as rich surgical experience when injecting, if the beauty seeker chooses an irregular and unprofessional institution for the surgical operation, the following hazards may occur: 1. Vascular embolism: During the operation, due to improper operation, hyaluronic acid enters the blood vessels, vascular embolism can occur, and its main symptoms are severe pain, bruising or swelling of the lips, and its The main symptom is severe pain, bruising or swelling of the lips, and the consequence is numbness and senselessness of the lips due to nerve damage, which can even lead to local skin necrosis. At this time, the patient must go to a regular tertiary hospital for treatment in time; 2. local granuloma and allergy: some patients are more sensitive to hyaluronic acid, and local granuloma can appear after injection, and if the patient is allergic to hyaluronic acid, it can also cause allergy; 3. infection: if the operator has a poor grasp of the aseptic principle, or the operation time is too long, it can easily lead to infection, and anti-infection treatment is needed; 4. displacement: if the operator does not select the injection site or level properly, the operator can easily cause infection. 4, displacement: If the operator does not select the injection part or level properly, the injection can be displaced and the desired effect cannot be obtained. To sum up, if you want to have lip augmentation by injection, you must choose a regular tertiary hospital and seek the help of professional doctors to effectively avoid the risks.