Patients who develop brain herniation require urgent surgical treatment to relieve the occupying lesion or intracranial pressure increase factor, and if the patient is awake within 2 weeks after surgery, it indicates that the danger period is passed. Brain herniation is a clinically dangerous condition in which normal brain tissue is squeezed from a site of higher pressure through a gap between brain tissues to a site of lower pressure when intracranial pressure is persistently increased or malignantly increased, causing brain function damage. If surgery is not performed in time, the mortality rate can reach 100%. After surgical treatment, if the patient can be awake within 2 weeks, it indicates that the patient has recovered well and passed the dangerous period. Otherwise, the likelihood of the patient being awake during subsequent treatment is low. If the patient remains in coma for more than 3 months, a vegetative state of survival may occur. Brain herniation is mostly caused by a rapid increase in intracranial pressure. Patients who develop elevated intracranial pressure are advised to seek prompt medical attention and emergency treatment, which can prevent brain herniation.