There are a lot of violent events in life, resulting in injuries, craniocerebral injury is a common type of traumatic brain injury, is caused by external violence in the head, its occurrence, development process depends mainly on two basic conditions, injury-causing factors and the nature of the injury, the former refers to the mechanical injury-causing factors, such as the mode of action of violence, the magnitude of the force, the speed, the direction and the number of times, etc., and the latter for the various different tissues and structures after accepting the The former refers to the mechanical injury factors, such as the mode of violence, the size, speed, direction and number of force, and the latter is the pathological injury and pathophysiological changes of different tissues and structures after receiving violence. Craniocerebral injury can be divided into cranial and brain volume part of the injury. Cranial injuries include scalp, cranium and brain, and brain injuries include meninges, brain tissues, cerebral blood vessels and cerebral nerve injuries. According to the anatomical parts of the cranium and brain and the pathological morphological changes of the injury are divided into: 1, scalp injury: including contusion, laceration, scalp hematoma, scalp avulsion injury. 2.Cranial fracture: including annoyance cover fracture and skull base moon analysis. 3.Brain injury: divided into primary brain injury (concussion, cerebral contusion, brain stem injury hall brain injury) and secondary craniocerebral injury (post-injury cerebral edema, intracranial hematoma). 4, firearms cranial rib open injury: including non-penetrating injuries and penetrating injuries. Scalp injury skull fracture, brain injury, firearms open cranial injury.