Hearing loss is also known as hearing loss, and there are two main types of hearing loss: the first is conductive deafness, and the second is neurological deafness. In this case, it is recommended to go to the ENT clinic and let the doctor check the condition of the ear canal and tympanic membrane, and see if there is any blockage of the ear canal, and some patients have cerumen that can block the ear canal. In addition, check for perforated eardrums and entrapment of the tympanic membrane. In some patients, such as those with otitis media, perforated eardrums and entrapment of the tympanic membrane can lead to conductive hearing loss. If the examination of the ear canal and tympanic membrane does not have any problem, still can not hear very clearly, it may be neurodeafness, neurodeafness can do a pure tone hearing threshold, acoustic conductance impedance examination, to determine the degree of neurodeafness, and then symptomatic treatment.