A “square face” is medically known as an enlarged jaw angle or square face deformity. This face shape is incompatible with the aesthetics of oriental people. Especially for women, oriental women admire the melon face or goose egg face. In addition to the aesthetic standard of “three stops and five eyes” and the golden ratio, the face should also have a beautiful curve. The upper part of the face (i.e. the width of the temporal bone, or the distance between the two temples), the middle part of the face (the distance between the outer edges of the zygomatic arches on both sides) and the lower part of the face (i.e. the distance between the outermost points of the two mandibles) should have a suitable ratio, while being in harmony with the length of the face. Therefore, jaw angle surgery has become one of the most popular facial contouring procedures for oriental women. What should a candidate do before opting for jaw angle surgery? What are the things to pay attention to before surgery? Precautions before surgery: Do not smoke two weeks before surgery, do not stay up late, avoid catching a cold, maintain oral hygiene, if you have special diseases or take medication, you need to inform the doctor in advance, such as stopping aspirin (to avoid increased bleeding during surgery), female patients should avoid the physiological period. Preparation for surgery: Visit the clinic 1~2 weeks in advance and make an appointment with the surgeon for the surgery date and hospitalization date. The doctor will first take pictures and evaluate the size, proportion, and symmetry of each part of the face, complete relevant craniofacial bone radiography and 3D CT examination to determine the location of important nerves and determine the site and size of the surgery accordingly. Since the surgery requires anesthesia, chest X-ray and blood tests, urine routine, and electrocardiogram will be done before the surgery. If transportation is not convenient, this can be done after admission to the hospital. You will be admitted 1-2 days before the surgery. Please make sure to come to the hospital on time, and make sure to communicate with your physician in advance for any changes or physiological periods. Once the above issues are prepared, you can prepare for the surgery with peace of mind!