One: What kind of chin do you belong to? Generally speaking, facial aesthetics has certain standards. The proportion of beautiful face is that the length of chin is basically the same as the length of forehead and nose, that is, the distance from the tip of nose to chin is basically equal to the distance from forehead to the tip of nose and the distance from hairline to forehead. If the length of chin is too short or too long, it will destroy the harmony of facial proportion. In addition, there is an aesthetic plane between the tip of the nose and the chin, that is, draw a straight line between the tip of the nose and the midpoint of the chin. If the highest point of the lips is just on this straight line, it will produce aesthetic feeling. If the jaw retracts, the lips will naturally go beyond the plane, forming a so-called "bird-shaped mouth". If the chin is too upturned, the lips will be lower than this plane, and there will be a feeling of "covering the sky". Two: chin augmentation is medically called micrognathia, which can be corrected by chin augmentation, commonly known as "chin augmentation" In fact, chin augmentation can change a person's whole appearance. Therefore, many women who love beauty have made demands, hoping to change their appearance through this minor operation. Augmentation has become one of the common operations in cosmetic plastic surgery. The operation of chin augmentation is not difficult, and it is a minor operation in cosmetic surgery. Even so, if the operation is improper, various complications may still occur, including postoperative infection, prosthesis displacement, lower lip varus, lower lip numbness and so on. However, these problems can be prevented, so we don't have to worry too much. For the problem of high chin, it is generally necessary to do mandibular grinding and osteotomy to correct it. The operation is relatively difficult, traumatic and takes a long time to recover, but as long as there is no infection after operation, the effect is generally good. Chin surgery has a finishing touch on changing face shape. To a certain extent, you can turn a square face into a long face, or change the outline of the face to make the face coordinated and delicate. To achieve these effects, it is very important to choose the size and shape of the prosthesis, and at the same time, we should consider the proportional relationship between labial muscles, lip shape and nose height, and we should not lose sight of one thing and another. Therefore, you'd better fully communicate with the doctor before the operation, and the doctor will give a reasonable design according to your requirements and your own specific situation to achieve the best surgical effect.