Hello, the square face caused by the wide mandibular angle can be changed by mandibular angle plastic surgery. Before the operation, a detailed surgical plan will be made according to the facial condition, personal temperament and specific needs of the beauty seeker. The operation was performed according to the aesthetics of mandibular angle radian. Intraoral incision is used to remove hypertrophic mandible. At the same time, the mandibular outer plate and mandibular margin can be removed or ground, and part of the masseter muscle can be removed if necessary. This surgical method is an advanced mandibular angle plastic technique at present, which can make facial lines softer and smoother, not only satisfy the people who pursue positive curves, but also shape the curvature effect of the side. Because the masseter muscle of mandibular angle is responsible for chewing function, doing this plastic surgery will inevitably cause discomfort in chewing function. Generally speaking, this discomfort is only temporary, because swelling will inevitably occur after operation, which will inevitably lead to masticatory dysfunction. This situation does not require any treatment. After 5-6 days, the swelling will be eliminated and the chewing function will gradually recover. It should be reminded that patients should not eat too hard food in the first few days after operation, and it is best to eat liquid food, such as milk and juice. After two or three days, he can use semi-liquid food, such as noodles and porridge, as appropriate, and then take out the stitches and eat normally. However, in order to ensure the postoperative effect, it is recommended not to use anything too hard one month after operation.