Sudden deafness is also called idiopathic deafness or sudden deafness. It means that tinnitus and deafness occur suddenly and instantly without tinnitus and deafness, and hearing loss reaches a peak within a few hours or days. It usually affects one ear, with a high incidence in adults aged 40 to 60. Bilateral patients account for 1%, and are more common in men. It is more likely to occur in spring and autumn. According to statistics from Byl (1977), the incidence rate is 10.7/100,000. According to statistics from the hearing clinic of Beijing Tongren Hospital, it accounts for 4.8% of the first-time sensorineural hearing loss. According to recent domestic and foreign literature reports, this disease seems to be gradually increasing.