Facial palsy includes central facial palsy and peripheral facial palsy. The common pre-symptoms are facial muscle movement disorders, sensory abnormalities, and eye or ear symptoms. 1. Central facial paralysis (1) Facial muscle dyskinesia: This is mainly characterized by abnormalities in the muscles of the lower face, such as drooping of the corners of the mouth, crooked corners of the mouth, shallow nasolabial folds, tilting of the tongue to the side, weakness of movements such as baring the teeth or puffing out the cheeks, and the possibility of food residues remaining in one side of the mouth when eating. (2) Sensory abnormalities: mainly sensory abnormalities and numbness in the lower face. 2. Peripheral facial paralysis (1) Facial muscle dyskinesia: Abnormalities may occur in both the upper and lower face, with lower facial symptoms similar to those of central facial paralysis, and upper facial symptoms such as flattening of the nasolabial folds and weakness of frowning. (2) Sensory abnormalities: one side of the face may have numbness and other sensory abnormalities. (3) Ocular symptoms: the main manifestations are reduced blinking, damage to the cornea or conjunctiva on the same side, and dry eyes. (4) Ear symptoms: pain in the external ear canal, hearing hypersensitivity and other symptoms. It is recommended that people who have the corresponding symptoms should consult a doctor in time and take regular treatment after identifying the cause of the disease.