The inability to move half of the face, crooked mouth and eyes closed is called facial palsy, which in Western medicine refers to idiopathic facial nerve palsy, also known as facial neuritis or Bell’s palsy. In Chinese medicine, it is called hanging line, crooked mouth wind, mouth seclusion and other categories. The initial clinical symptoms of facial palsy include crookedness of the corners of the mouth, impairment of normal speech, swallowing, eye closure, and even inability to close the eyes, leakage of air when whistling with cheeks, leakage of water when gargling, enlargement of the eye fissure, shallowing of the nasolabial fissure, drooping of the corners of the mouth, crookedness of the corners of the mouth when showing the teeth, pain behind the ipsilateral ear, in front of the ear, in the mastoid area or in the face. . Some patients may experience loss of taste in the anterior two-thirds of the tongue, herpes in the external ear canal or tympanic membrane, which affects normal hearing. In clinical practice, the main purpose is to improve local blood circulation, reduce nerve edema in the face and relieve nerve compression.