The location of the back of the head that is most afraid of bruising includes the back of the head itself, the junction of the back of the head and the cervical vertebrae. 1. The back of the head itself: the back of the head itself is a relatively weak position, once subjected to external trauma, may lead to skull fracture, can cause intracranial hematoma, large amounts of bleeding will lead to increased intracranial pressure, the formation of cerebral hernia and life-threatening. 2. The junction of the back of the head and cervical vertebrae: the junction of the back of the head and cervical vertebrae belongs to the location of the brain stem, which is the life center of the human body, responsible for human respiration, heartbeat and so on, and if the brain stem is seriously damaged, it can be life-threatening. When the back of the head is damaged, go to the emergency room of the hospital, under the guidance of the doctor to improve the head CT and other tests to clarify whether there is craniocerebral injury, according to the condition of the symptomatic treatment.