[Diagnosis] 1, the onset of the disease is rapid, and there are few conscious symptoms. Commonly, there is no abnormality when going to sleep, and when waking up in the morning to wash, they suddenly realize that they cannot drink or gargle, or they do not have any sensation but others notice it first. Some patients may have ear or mastoid pain symptoms before the onset of the disease. 2. The facial expression muscles are paralyzed to different degrees. The affected side of the forehead wrinkles disappear, can not wrinkle forehead and frown; nasolabial folds become shallow, the upper and lower eyelids can not be completely closed; the corner of the mouth is crooked, the middle of the mouth is crooked; puffing cheeks, blowing dysfunction. 3.Functional examination (1)Taste: whether there is any change in the contrast between the two sides of the front 2/3 of the tongue (sweet, salty and sour). (2) Hearing: tuning fork (256Hz) contrast from far to near on both sides. The affected side may show bass-voice hypersensitivity or auditory enhancement. (3) Lacrimal examination: use two filter paper, bend it at 2mm from one end and place it in the conjunctival sac of both lower lids. 5 minutes later, the length of the paper stained with tears is about 2cm as normal. 4.Localization of damage (l)Beyond the stomatoprosthesis Facial paralysis. (2) Between tympanic cord and stapedius muscle Facial paralysis + loss of taste + salivary gland secretion disorder. (3) Between the stapedius muscle and the geniculate ganglion Facial paralysis + loss of taste + salivary gland secretion disorder + auditory changes. (4) Knee ganglion Facial paralysis + loss of taste + impaired secretion of salivary and lacrimal glands + auditory changes. 5. This disease should be differentiated from facial nerve palsy caused by otitis media, injury, acoustic neuroma and parotid gland disorders. 6, central (supranuclear) facial nerve paralysis clinical features are (1) lesions on the opposite side of the blepharospasm below the facial expression muscle paralysis; (2) often accompanied by paralysis of limbs on the same side of the facial paralysis; (3) no taste and salivary gland secretion disorders. Attention should be paid to its differentiation. Prognosis: 80% of cases recover within 2-3 months. Mild cases mostly without neurodegeneration, 2-3 weeks after the beginning of the recovery, 1-2 months within the total recovery; partial degeneration of the nerve, it takes 3-6 months to recover, the more serious, recovery is slow or even can not be recovered 【Treatment】 Acute stage: the onset of the disease in l-2 weeks. This period is mainly to control inflammatory edema, improve local blood circulation, reduce nerve compression. Commonly used drugs are: 1, the use of corticosterone drugs to reduce facial nerve edema. Starting from the day of disease onset prednisone tablets tablets orally, three times a day, the daily dose of 45~60mg, 3 days after the gradual reduction of the amount, not more than 10 days; also available dexamethasone 10mg intravenous drip, once a day. 2.Vasodilator drugs: Niacin tablets orally , 100mg, three times a day; or diprazole tablets orally, 20~30mg, three times a day. 3.Antiviral therapy: signed in this disease is related to herpes simplex and herpes zoster virus infection, available pentacyclic guanosine oral. 4.Vitamin B1 100vmg intramuscular injection, once a day; vitamin 12 1000μg, intramuscular injection, every time. Recovery period: 2 weekends to 2 years after the onset of the disease. The treatment in this period is mainly to restore the nerve conduction function and strengthen the muscle contraction as soon as possible. In addition to continue to give vitamin B1, B12, the following measures can be taken: 1, galantamine 2, 5 mg intramuscular injection, once a day; or neostigmine tablets orally, 60 mg, three times a day. 2.Physical therapy Electric stimulation, electric massage, etc.. 3.Clock prick Dicang, cataract, sun, wind pool, Hegu, foot Sanli and other points, strong stimulation. 4.Pay attention to eye protection, such as wearing glasses, sterile liquid paraffin drops, using eye drops and antimicrobial eye ointment. 5.Facial exercise and massage of the affected side of the expression muscles, their own press the healthy side of the expression muscles of the exercise of the affected side, but also self-massage of the affected side of the expression muscles, once a day in the morning and evening. Special reminder: all stimulation therapies such as: electrical stimulation, electric massage, acupuncture stimulation, etc. should not be applied in the early stage of the disease, to prevent leading to facial muscle spasm.