The bones on both sides of the face are called zygomatic bones, which are part of the facial skull, and there is a zygomatic arch behind the zygomatic bones, which are important bony supports in the middle of the face, and are also important components of the contour of the human face. It has three main functions: first, protection, external force to the face of the cranial wall damage; second, constitute the contour of the facial shape, the shape and size of the human face depends mainly on the contour of the zygomatic bone; third, it plays a role in separating the deep temporal muscle and the superficial skin, so when eating see both sides of the temporal will move, but the skin of the zygomatic arch this place is not moving.