Intracranial pressure monitoring methods include lumbar subarachnoid space manometry, optical fiber intracranial monitoring, and intraventricular manometry. 1. Lumbar subarachnoid space manometry: it is to use lumbar puncture, so that the cerebrospinal fluid flows out through the puncture needle, so that the cerebrospinal fluid flows into the pressure measuring tube for monitoring, the normal human cranial pressure is 80~180mmH2O. 2. Optical fiber intracranial monitoring: mainly open a small hole in the patient’s skull, insert the sensor probe of the detecting instrument horizontally into the subdural, brain parenchyma or intracerebral chamber, and then transmit it to the extracranial pressure monitor through the optical fiber, which can accurately and dynamically monitor the patient’s intracranial pressure, and can be carried out to continuously monitor the situation of intracranial pressure. 3. Intraventricular pressure measurement: It is to enter the ventricle of the brain by drilling and puncturing the patient’s skull, and then monitor the intracranial pressure through the detection of cerebrospinal fluid pressure. This method is more accurate, and it is one of the more commonly used measurement methods in the clinic. If the patient has an abnormal intracranial pressure, it is recommended to do further examination under the guidance of the doctor, to clarify the cause of the disease, and then actively cooperate with the doctor’s treatment.