Dr. Li Jiang, Professor, Chief Physician, Graduate Tutor, Plastic and Reconstructive Surgery Department, Jinan Military General Hospital Li Jiang is the most popular cosmetic surgeon in the world, and the most popular cosmetic surgeon in the world. Modern medical cosmetic surgery can relieve the natural troubles of square-faced women, and it is no longer a dream to be a beauty with a small face. The surgery can only be carried out in a tertiary hospital. The principle of the square face reshaping technique is to remove the excess bone, so that the angle of the jaw to form 1200 beautiful angle, and at the same time reduce the local bite muscle and fat thickness. The surgery results in an oval face shape after recovery. There are two types of face reshaping surgery: intraoral, extraoral and combined intraoral and extraoral approaches. The disadvantages of the intraoral approach are the long incision, the long operating time, the extensive damage and the complexity of the operation. It is prone to uncontrollable hemorrhage, wound infection, wound dehiscence, mandibular fracture, and nerve damage. Postoperative facial swelling is serious, oral care is difficult, eating is difficult. Postoperative bed rest and anti-infection treatment are required. Extra-oral minimally invasive method: It is a fixed technique researched and applied by Prof. Li Jiang for 15 years. The procedure uses local anesthesia (2 anesthetics), short incision (2cm), short operation time (2 hours), simple operation (2 doctors), low risk of surgery with less bleeding (20ml), no fracture and no nerve damage. Post-operation facial swelling is mild, and you can rinse your mouth and eat normally. Postoperative hospitalization is short (2 days) and anti-inflammatory drugs are not required. The procedure is easy to achieve the desired results and has the best overall safety profile. The surgical incision heals with essentially no scar growth. Based on the above analysis, the extra-oral method of square face reshaping is a simple, efficient, safe and practical surgical option.