Cochlear implantation for sudden deafness does not necessarily result in complete hearing restoration, depending on the overall effectiveness of the treatment and the timeliness of the treatment. Cochlear implant is currently the most effective treatment for severe and very severe sensorineural deafness, through the implantation of electrodes to give electrical stimulation of the spiral ganglion, generating auditory impulses through the auditory nerve to the center after the auditory function will be restored and reconstructed, the current indications for surgery in China for patients with severe or very severe sensorineural deafness in both ears. Sudden deafness patients, if implanted with cochlear implants, may be able to restore hearing, but there are also some patients with poor treatment results, unable to restore hearing. Early stage of sudden deafness, if you can actively cooperate with the doctor to take treatment, some patients may be able to regain their hearing or improve their hearing, so it is important to actively cooperate with the doctor to take treatment.