Onion for deafness is not true. Onion is a common vegetable in daily life, can not play a role in the treatment of deafness. Deafness is a relatively common clinical symptom, many diseases can lead to deafness, such as conductive deafness, sensorineural deafness, mixed deafness, etc., and different types of deafness, its treatment is different. For conductive deafness, if there is a deformity of the auditory ossicles chain and perforation of the eardrum, it can be treated by surgical correction; for the presence of atresia, it is necessary to rebuild the ear canal through plastic surgery, so as to achieve the purpose of treatment; for the cholesteatoma of the external auditory canal, it is generally necessary to surgically remove the cholesteatoma to achieve the therapeutic purpose. In case of mixed deafness with otitis media and ossicular chain lesion, the first step is to treat it with surgery and hearing aid; in case of simple neurological deafness, no treatment is needed for mild patients; in case of moderate patients, ordinary hearing aids can be worn; in case of severe patients, cochlear implantation is needed to improve and restore the hearing. So once the phenomenon of deafness, we should pay attention to the hospital in a timely manner, to identify the specific causes of the disease, under the guidance of the doctor for reasonable treatment. There is no basis for onion treatment of deafness.