Zygomatic reduction is generally suitable for patients with anterolateral facial protrusion. Intraoral incision is often used to separate and expose the subperiosteal zygomatic bone, and special instruments are used to chisel and thin the zygomatic bone designed to be removed before operation, thus reducing the external contour of the face and improving the face shape. The biggest advantage of this kind of operation is that there is no scar and no trace after operation. In addition to zygomatic reduction, for a small number of patients, local depression in the middle face or bilateral zygomatic asymmetry caused by congenital or acquired diseases can be improved by autologous tissue transplantation or zygomatic augmentation with prosthetic materials. Operation time: within 60 minutes.