Hyaluronic acid injection chin filling is a convenient, fast, less invasive and immediate effect microplasty method, can effectively improve the chin short, receding and other symptoms. Its adverse reactions are mainly as follows: 1. Redness and itching at the injection site after surgery are common phenomena, which can generally dissipate on their own in about a week and do not affect normal life and work, if the symptoms are not relieved for a long time, it is recommended that patients seek medical attention in time; 2. Local bruising symptoms are easily triggered after hyaluronic acid injection, which is manifested as chin bruising, and the bruising can generally disappear after 3-5 days; 3. Within two weeks after injection Because the injected hyaluronic acid is not stable, when pressing and kneading the local area, it is easy to make the hyaluronic acid shift or deformation; 4, after the injection of hyaluronic acid, the local area is more sensitive, if the patient does not pay attention to sun protection, it is easy to trigger local pigmentation; 5, the maintenance time of hyaluronic acid chin augmentation is short, only 6-12 months, if the patient wants to maintain the effect, he must continue to inject hyaluronic acid. In short, hyaluronic acid chin augmentation is less traumatic and has a shorter recovery time, but with the body’s metabolism, hyaluronic acid can be completely decomposed and absorbed, which is a non-permanent injection material and requires regular supplemental injections. When choosing the injection, the candidate must go to a regular institution to find a professional doctor to operate in order to guarantee the safety and effect of the injection.