If the head injury is mild, such as a simple epidural hematoma, it is possible for such patients to recover to the normal level after surgery, and their life expectancy will be consistent with that of normal people and will not be greatly affected. 2. Intracranial pressure increase, such patients generally do not survive more than a week. If the patient undergoes active treatment, the intracranial pressure can be controlled stably, and the related complications after surgery can be effectively prevented. Combined with active nutritional support and early rehabilitation, the survival time of these patients may reach 2 years or even more than 2 years.