Occipital impingement is more common in patients with craniocerebral injuries, due to the lack of protective action when the injured person falls backward, so the brain injury is often more serious and complex than the frontal impact or lateral head impact. The clinical characteristics of brain injury caused by head impact on the back of the occipital region are as follows: 1. The impact injury is often more serious than the impact point injury. The impact site is more likely to occur frontotemporal lobe cerebral contusion injury, with subdural hematoma or intracranial hematoma; 2, the occurrence of impact injury and age has a close relationship. 56 ~ 90 years old people have the highest incidence, some older people in the case of external force is not big will also occur impact injury; 3, the incidence of delayed intracranial hematoma is high. The so-called delayed traumatic intracranial hematoma means that the hematoma is not detected on the first CT scan after the injury, and when the condition changes, the hematoma can be detected on another CT examination. It is generally accepted that symptoms can develop when the episodic hematoma exceeds 20 mL to 30 mL. Brain hernia is formed when the hematoma increases in size and compresses the ipsilateral cerebral hemisphere, causing the temporal lobe sulcus to herniate downward through the cerebellar vermis incision. If the intracranial hematoma occurs before herniation or one side of the pupil is dilated, remove the hematoma as soon as possible, release the pressure on the ipsilateral cerebral hemisphere, reduce intracranial pressure, and reset the hernia, the patient’s prognosis is good. However, when brain herniation occurs, if the operation time is slightly delayed, hematoma removal time is late, although the postoperative relief of the brain stem pressure, but often due to the brain stem secondary ischemic necrosis, the brain is severely hypoxic, the patient is difficult to be saved. At present, CT examination has been very popular in China, and many patients have been diagnosed and effectively treated in the early post-injury period. However, it should be emphasized that, for some patients with traumatic brain injury, a CT examination, especially half an hour after the injury within the ultra-early stage of the completion of the examination, is not everything is fine, dynamic observation should be made, and there are changes in the condition of the timely review of the CT. foreign scholars recommend that the CT review in 6 hours to 8 hours or even earlier when the clinical symptoms deterioration of the time, it is worthwhile to learn from the review.