With the increase of traffic accidents and other accidental injuries, the incidence of craniomaxillofacial trauma is also increasing year by year. Due to the complex anatomical structure of craniofacial and involving many important organs, the trauma often causes serious craniofacial deformation and dysfunction, especially the serious complex fracture, which often results in serious cosmetic disfigurement if not treated in time or improperly treated. Therefore, once craniofacial trauma occurs, you should go to an experienced and qualified hospital for consultation in time. I. Common parts of craniomaxillofacial trauma: 1. Frontal orbital fracture: The so-called frontal orbital fracture refers to the local fracture of the forehead area caused by trauma. It often involves the nose or the upper edge of the orbit. It mainly manifests as local depression, and if there is cranial defect after fracture, it may lead to intracranial adhesions with intraorbital tissues; when intraorbital contents are embedded in the cranial cavity, it may cause eye entropion, diplopia, ptosis, and eye pulsation; when cranial contents are embedded in the orbit, it is a type of brain herniation, which may lead to epilepsy; psychiatric symptoms and other neurological damage. Severe depressed frontal orbital fractures have the potential to affect the development of the child’s brain. Therefore, frontal orbital fracture can not only affect the patient’s appearance, but also lead to a series of functional disorders if left untreated. 2.Orbital zygomatic fracture: It refers to the collapse of the zygomatic bone due to impact and causes fracture of the orbital floor. The main manifestation is the collapse of the injured side, asymmetry of both sides, and the inward displacement of the eye, which seriously affects the appearance. If the fractured zygomatic bone is stuck in the mandible, it can also lead to restricted mouth opening, affecting speech and eating. 3. Nasal sieve orbital fracture: It is a fracture of the nasal bone and the medial wall of the orbit that occurs between the two orbits. It often causes severe nasal dorsal collapse, shortening of the nose, upturning of the nasal tip, narrowing and shortening of the eyes, and widening of the distance between the two eyes. At the same time, fractures of the medial and inferior orbital walls result in an inward deformity of the eye. Injury fracture of the lacrimal duct system may lead to tearing and inflammation of the lacrimal sac. 4. Fracture of the maxilla and mandible: As the name suggests, it is a fracture that occurs in the maxilla and mandible, either alone or at the same time in the maxilla and mandible. The severity can be a minor fracture or a multi-part comminuted fracture. It severely affects facial morphology and masticatory function. Depending on the severity of the injury, fractures can occur in a single site as described above or in multiple sites of the craniofacial bone. The more parts of fracture, the more complicated the surgery will be. The timing of surgery for craniomaxillofacial trauma: Patients with craniomaxillofacial fractures should be operated as early as possible. Early surgery is not only easy to reveal the fracture site, but also clear anatomical structure, and anatomical repositioning can be achieved. If the fracture is not repaired early, it will lead to deformity healing and soft tissue embedded blunt adhesions, resulting in confusion of anatomical relationship, which not only makes the operation more difficult, but also greatly increases the chance of complications such as bleeding and infection, and the surgical effect cannot be compared with that of the early operation. In general, the best time to operate is at the time of the injury, and if the situation allows, reset and fixation should be performed as soon as possible. If it is accompanied with other parts of the body, for example, cranio-cerebral injury and other internal organs injury, other fatal injuries should be treated actively, and the treatment should be carried out after the patient’s condition is stabilized, usually at 2-3 weeks after the injury. The treatment of late deformity after craniomaxillofacial trauma: The so-called late deformity refers to the facial deformity that occurs more than 3 months after craniomaxillofacial trauma when the early stage is not treated in time or although the treatment is carried out at that time but the treatment is not appropriate. Compared with early surgery, surgery for patients with late deformity is more difficult, but through meticulous preoperative examination and surgical design, good surgical results can still be achieved.