The recovery time varies depending on the cause of facial palsy. Idiopathic facial nerve palsy generally takes about two months to recover; central facial palsy recovery time varies, with some cases taking several weeks, while some patients take several months to recover, and a small number of patients do not recover completely. Facial palsy is divided into central neurofacial nerve palsy and peripheral facial nerve palsy. If the facial weakness is peripheral, the main clinical manifestations are distorted corners of the mouth on the injured side, weakness in closing the eyes, shallowing or disappearance of the frontal lines, and in severe cases, white sclera may leak out when the eyes are closed; in most cases, no obvious cause can be found. If it is central, mainly manifesting as paralysis of the muscles below the contralateral eye fissure, head MRI and serological tests for glucose, blood sedimentation, blood sugar, syphilis, HIV and vasculitis should be considered if necessary. Patients with facial palsy should begin treatment early and aggressively, with appropriate rehabilitation. Most patients have a good prognosis, with a small percentage of patients left with sequelae.