Hyaluronic acid chin filling is one of the most popular plastic surgery methods, with mild pain, quick results and simple operation, which is highly favored by the majority of beauty seekers. Since hyaluronic acid is absorbed by the body, the maintenance effect after injection is not permanent. At present, there are many varieties of hyaluronic acid, and different hyaluronic acid has different physical characteristics as well as degradation cycles, which can be maintained for a period ranging from 6-18 months after one injection. The advantage of using hyaluronic acid to fill the chin is that it only needs to be injected, which is simple and easy, and the effect is immediate, but the disadvantage is that it will be absorbed in about six months and needs to be repeatedly injected, and the overall price is high. Candidates should choose a regular plastic surgery hospital for treatment to ensure the safety of the injection and to avoid local redness, swelling, bruising, pigmentation and other adverse reactions. After injecting hyaluronic acid, try not to make exaggerated expressions, avoid squeezing, massaging and sauna, etc., otherwise it will easily lead to the displacement of the position of the injected hyaluronic acid, resulting in the uncoordinated performance of the jaw area.