Facial paralysis may not be completely cured after a long period of time. The recovery of facial paralysis has a certain period of time, which is related to the pathological basis of the injury. Facial paralysis is a paralysis of the peripheral muscles of expression caused by damage to the facial nerve, and its main mechanism is edema of the facial nerve. The main mechanism is edema of the facial nerve. When traveling in the facial nerve canal, the swelling leads to gaiton, and the nerve compression leads to the symptom of loss of function. Early treatment should be based on hormone therapy, anti-inflammatory, reduce edema, minimize compression, so that the nerve function can be restored. Its recovery period is usually around two months, if it is more than two months, the damage may persist and cause sequelae symptoms. Therefore, the earlier the facial paralysis time treatment, the better, if more than two weeks, its treatment will become less effective. Beyond two months, it is recommended that no further treatment is needed and it usually does not get better.