Patients with poor hearing mainly include the following problems: 1. congenital, influenced by genetic factors, patients may carry the deafness gene. 2. mainly consider patients with conduction problems in the ear canal, such as a large amount of cerumen blockage in the external ear canal or the formation of buds in the ear canal, or even cholesteatoma, cysts in the external ear canal, can also lead to hearing loss. 3. mainly consider the neurological The problem may be due to the aging of the patient and the lack of nutritional supply of nerves may also lead to hearing loss. Regardless of which of the above causes lead to hearing loss, patients must go to the hospital for detailed examination to clarify the specific degree of hearing and then actively treat the symptoms.