Sudden deafness, also called idiopathic deafness, is a type of sensorineural deafness that occurs suddenly and has an unknown cause. Tinnitus, is only one of the symptoms of this type of deafness. There are many possible causes of sudden onset tinnitus and deafness, including viral infection, insufficient blood supply to the inner ear, and vascular spasm, so its etiology is more complex. Clinical treatment is very urgent and demanding in terms of time. Therefore, once this kind of deafness and tinnitus occurs, it is important to seek medical attention in time for a clear diagnosis and standardized treatment.