The difference between facial nerve palsy and facial paralysis is that facial nerve palsy is a disease while facial paralysis is a symptom. Facial nerve palsy can cause facial paralysis, but facial paralysis is not necessarily caused by facial nerve palsy. Facial paralysis is clinically divided into central facial paralysis and peripheral facial paralysis. Central facial paralysis is mainly caused by a variety of diseases such as cerebrovascular disease, intracranial infections and tumors. Central facial palsy usually involves paralysis of the expression muscles below the ophthalmic fissure, the frontal lines on both sides are basically symmetrical, and sensory and motor dysfunction of the limbs on the opposite side of the brain lesion may occur. Peripheral facial paralysis is usually facial nerve paralysis, usually caused by facial neuritis, viral infection, etc., facial nerve compression, edema caused by facial nerve paralysis, the patient manifested as the paralysis of the facial expression muscles above and below the eye fissure, frontal lines disappeared, the corners of the mouth are crooked, the eye fissure is enlarged, etc., and there will not be sensory-motor dysfunction of the limbs. If the symptoms of facial paralysis appear, you should go to the hospital in time, and under the guidance of the doctor to actively treat.