According to the standards of the health department, the degree of hearing impairment can be divided into-mild (hearing loss is 26-40dB HL, and conversation can be heard), moderate (hearing loss is 4 1-60dB HL, and it is difficult to listen loudly), severe (hearing loss is 6 1-80dB HL, and only a few words can be heard when shouting into the ear), and extremely severe (.

Second, high-risk hearing-impaired people

Family history of deafness, long-term exposure to noise environment, history of ototoxic drug use, chronic systemic diseases (such as hypertension, hyperlipidemia and diabetes), bad hobbies (such as smoking and drinking) and long-term mental stress.

Third, the main causes of children's hearing impairment

One is genetic factors. This is an important cause of congenital hearing impairment in children, which can lead to hearing loss at birth or delayed hearing loss in childhood. The second is middle ear infection. This is the main cause of hearing loss in childhood. Recurrent otitis media can lead to hearing loss, which in turn affects language development. Third, bad ear habits. This is the main cause of hearing loss in teenagers, mainly manifested as noise deafness and sudden deafness.

Fourth, ways to achieve hearing health

1. Learn the necessary medical knowledge of hearing health, have regular hearing health checkups, and know your own hearing health; 2. Master the necessary common sense of hearing care to avoid unfavorable factors that may damage hearing; 3. If you feel abnormal hearing, you should find a doctor for scientific and professional hearing diagnosis in time and actively cooperate with rehabilitation treatment according to the doctor's advice; 4. Learn self-rehabilitation skills and insist on listening training; 5. Change the way of life, and persistently carry out self-listening supervision and management; 6. For patients who can't recover their hearing through medical treatment, it is necessary to choose a suitable hearing aid as soon as possible, and carry out hearing impairment rehabilitation or hearing compensation in time.