The chin occupies a very important position in the facial contour, and its shape affects the overall facial features and first impression characteristics. In recent years, the shape of the chin has become more and more important to people, and more and more people are seeking to improve the shape of the chin through surgical treatment to improve the contour of the face. The chin has a variety of shapes, and the common deformities are short, crooked, and overly prominent chins. All of these deformities can be corrected through surgery to improve the appearance of the face. Different ethnic groups have different facial contour bases due to congenital genetic factors, and the oriental face is relatively wide and short, with a slightly less three-dimensional facial appearance. The differences in cultural backgrounds of different ethnic groups lead to significant differences in aesthetics. Oriental people generally oval, goose egg-shaped face or melon face is the most beautiful, requiring a soft facial curve, the side view has a beautiful arc. For chin plastic surgery generally need to check before surgery: chin height, chin protrusion, chin-lip groove depth, the relationship between the nose, lips and chin, and other aspects. Before surgery, you need to take a positive and lateral X-ray of the head, or three-dimensional reconstruction of the head CT film The current plastic surgery for chin deformity can be divided into two main categories: 1, chin filling is only applicable to the correction of mild to moderate small chin deformity of the face bite and relationship between normal, require improvement of facial contours of patients. The filled prosthesis is used to increase the length and protrusion of the chin, or to conceal the mild chin deviation. The commonly used materials for implantation are silicone, Medpor and PTFE, etc. 2, chin shaping surgery in the eighties of the twentieth century Bell proposed a chin osteotomy with extensive soft tissue tip, because the blood flow of the chin bone segment is guaranteed, postoperative bone resorption is greatly reduced, and the proportion of soft tissue changes after osteotomy is closer, is the ideal method to correct various chin deformities. It is suitable for the surgical correction of chin recession, short chin, long chin, giant chin and deviated chin. Different osteotomy methods can be selected according to the different chin deformities: 1. horizontal forward shift type; 2. forward shift and lengthening type; 3. horizontal left and right shift type; 4. horizontal shift and rotation type; 5. shortened forward shift type; 6. shortened backward type, etc.