Indications for intracranial pressure monitoring by the American Association of Neurological Surgeons and the Traumatic Brain Injury Foundation: 1. ICP monitoring is indicated for patients with abnormalities on admission CT examination (hematoma, cerebral contusion. ICP monitoring is appropriate for comatose patients with a GCS score of 3-8. 2, the upper limit of ICP, most centers take 20mmHg, ICP higher than this indicator is increased, need to be treated, to understand the patient ICP increased is in a high-risk state. 3, monitoring cerebral perfusion pressure (CPP) is more important, through continuous monitoring of ICP and blood pressure, CI)P can be measured. should be taken to lower ICP treatment, to ensure the appropriate CPP, to achieve maximum resuscitation effect. 4. ICP monitoring, the main significance is to enable the physician to detect intracranial hematoma and cerebral edema at an early stage through ICP objective information, as a guide for treatment. ICP information also helps to determine the prognosis. IcP monitoring should be performed in patients with severe craniocerebral injuries with a GCS score of 3-8 and abnormal Ct. 5. ICP monitoring is considered to be a valuable technique, and most traumatic brain injury specialists consider ICP or cpp data as a reference for determining life-saving treatment options in the ICU.