The phenomenon of recurrent deafness is a symptom of sudden deafness. Sudden deafness (hereinafter referred to as sudden deafness) is a sudden onset of sensory nerve deafness of unknown cause, also known as violent deafness. The main clinical manifestation is unilateral hearing loss, which may be accompanied by tinnitus, ear blockage, vertigo, nausea and vomiting. Its onset is rapid, its progression is fast, and the treatment effect is directly related to the time of consultation, so it should be regarded as an otologic emergency. The deafness phenomenon is a reduction or disappearance of hearing loss due to an increase in the sound intensity of the stimulus; the strong sound tolerance is reduced, and the patient feels pain in the ear before reaching the strong sound tolerance of a normal person (105-110 dB). Prevention and recuperation methods for the deafness phenomenon: 1. Patients with the deafness phenomenon should recuperate at home, especially avoiding contact with noise or excessive sound. Keep the home environment tidy and the patient in a relaxed mood to facilitate recovery. 2, the prevention of colds, a part of the phenomenon of deaf patients may have an indirect relationship with the cold, so the prevention of colds can reduce a morbidity factor. 3, pay attention to do not overwork, do not live sometimes, diet ration. The disease occurs in middle-aged people, so middle-aged people should pay more attention to this point. 4, emotional stability, avoid anger and ecstasy, because these can cause the imbalance of neurohumoral regulation in the human body, resulting in blood circulation disorders in the ear and deafness.