Fractures of the zygomatic bone cause collapse of the zygomatic face. The zygomatic bone and zygomatic arch are the more prominent parts of the face and are susceptible to fracture by impact. The zygomatic bone is associated with the maxilla, frontal bone, pterygoid bone and temporal bone, with the largest connection surface with the maxilla, so zygomatic fractures are often accompanied by maxillary fractures. The temporal eminence of the zygomatic bone is connected to the zygomatic eminence of the temporal bone to form the zygomatic arch, which is narrower and more prone to fracture. It can be divided into zygomatic fracture, zygomatic arch fracture, zygomatic-zygomatic arch joint fracture and complex fracture of zygomatic and maxillary bones, and zygomatic arch fracture can be divided into bilinear and trilinear fractures. Knight and North proposed 6 types of fractures: (1) undisplaced fractures; (2) zygomatic arch fractures; (3) zygomatic body fractures with inward displacement without transposition; (4) internal transposition zygomatic body fractures with counterclockwise rotation on the left and clockwise rotation on the right or toward the midline, and radiographs showing the infraorbital rim downward and medial displacement of the zygomatic frontal eminence; (5) external transposition zygomatic body fractures with clockwise rotation on the left and counterclockwise rotation on the right or away from the midline (6) complex fractures. They concluded that ② and ⑤ fractures are stable after resetting and do not require fixation; ③, ④ and ⑥ fractures are unstable after resetting and require fixation.