Sudden deafness refers to sudden sensorineural hearing loss of unknown cause. The main manifestation is unilateral hearing loss, the hearing of patients generally drops to the lowest point in a few minutes or hours, and a few patients can reach the lowest point in three days; It can be accompanied by tinnitus, ear blockage, vertigo, nausea, vomiting, etc. The prognosis of sudden deafness is related to the age of the patient, the degree of hearing loss, the duration of the disease, the time of treatment and whether there is vertigo. The effect is better when the treatment starts within 7-10 days. At present, the treatment methods for sudden deafness include intravenous infusion of vasodilators, vasodilators, energy mixture, anticoagulants, antiviral drugs, dehydrators, hyperbaric oxygen therapy, intratympanic or retroauricular injection of glucocorticoids, etc.