Deafness is a highly prevalent disease in today’s society and has a direct impact on people’s quality of life. Organic deafness can be divided into conductive deafness, sensorineural deafness and mixed deafness according to the location of the lesion. Different deafness can be treated differently. Some deafness can be cured and some cannot be cured. Conductive deafness refers to hearing impairment caused by lesions in the outer and middle ears of the acoustic conduction pathway. Common causes include various inflammatory diseases such as acute and chronic suppurative otitis media, acute and chronic secretory otitis media, and adhesive otitis media; trauma such as tympanic membrane trauma and interruption of the auditory chain; foreign bodies or other mechanical obstruction such as foreign bodies and tumors in the external ear canal; and malformations such as malformations of the auditory chain and absent tympanic membrane. These diseases are easier to diagnose clinically and are usually curable through medication or surgical treatment. Sensorineural deafness, on the other hand, is a hearing disorder caused by lesions in the inner ear, the auditory nerve and the auditory center, which are commonly caused by drugs and genetics. A large amount of clinical data shows that most sensorineural deafness cannot be restored by medication or surgery, and that this hearing impairment is irreversible. Only some cases of sudden deafness can be cured or relieved by medication. Whether deafness can be cured and the effectiveness of treatment depends on the specific type and duration of onset.