In oriental aesthetics, it is a trend for girls to pursue the shape of oval face. With the development of plastic surgery, mandibular angle plastic surgery has helped many beauty seekers to bid farewell to the national character face easily. To solve the problem of hypertrophy of mandibular angle, plastic surgery of mandibular angle is the best method. Intraoral incision is used in mandibular angle plastic surgery, which has the advantages of less surgical injury, high safety, clear vision and less bleeding. Part of the buccal fat pad can be removed as needed to achieve better results without leaving facial scars after operation.