Hyaluronic acid lip augmentation can improve the appearance of lips by injecting hyaluronic acid into the submucosa of red lips to make them appear fuller and further refine and adjust the appearance of lips, such as reshaping lip beads and lip peaks, which can improve the appearance of lips and have positive effects on social, work, life and image enhancement. However, there are some risks in the process of hyaluronic acid lip augmentation, and only by choosing a more regular hospital and a professional and skilled doctor can the harm be minimized. The amount of hyaluronic acid injection for lip augmentation is generally stable, if 1ml is injected, it reaches the body that is 1ml, the particle quality is more even and delicate, and it can better improve the bilateral symmetry, the degree of small fine lines, and even the lip beads, lip shape and lip peaks. Lip injection of hyaluronic acid should pay attention to the following risks: 1. Once injected into the blood vessels, it may cause embolism or necrosis; 2. Due to the rich blood vessels in the lips, bruising and swelling may occur after injection, which is a normal phenomenon. If the injection of unqualified products may cause infection and longer swelling of lips; 3. The injection level cannot be too shallow, otherwise the lips will appear transparent after the surgery. It should be noted that due to the characteristics of hyaluronic acid easily absorbed by the human body, it must be repeatedly injected, and generally need to be injected once in 6-9 months to maintain good results.