If a patient has nerve damage in the brain, the damaged nerves are not self-healing, but the functions innervated by the nerves may be partially restored with the body’s own compensatory action. Damaged brain nerves generally do not have the ability to regenerate themselves and have lost their corresponding functions. However, if the scope of the injured brain nerve is small and there are more active nerve cells around, it may be possible to partially recover the function of the injury through the compensatory action of the organism itself; however, if the patient has a larger scope of injury, more damaged cells and fewer surviving nerve cells around, even if a compensatory reaction occurs, it may not be completely compensated and may easily leave sequelae, such as language or motor dysfunction. If necessary, patients can promote the functional recovery of damaged nerve cells through effective treatment under the guidance of doctors. For example, surgical treatment to reduce intracranial pressure, reduce intracranial hypertension and eliminate peripheral nerve edema, or oral nerve-nourishing drugs such as methylcobalamin and vitamin B12 are effective in the recovery of nerve function. It is recommended that patients should pay attention to the monitoring of blood pressure, blood glucose and blood lipids in order to prevent blood circulation disorders and aggravate the damage of brain nerves.