Clinical and histopathological studies of age-related deafness have revealed degeneration of the cochlear end receptors (spiracles), a decrease in spiral ganglion cells, and atrophy of the cochlear nerve. Aging of the human ear is manifested not only in the inner ear end receptors, but also in the nerves that innervate the inner ear at all levels and its centers. The auditory centers also show degeneration, all of which lead to hearing loss in the elderly. Aging of the ear is a natural phenomenon and is irreversible. However, the effects of environmental factors and certain diseases on aging can be regulated through proper and reasonable health care to slow down the aging process. Hearing aids will not cure deafness, but will improve hearing; nor will wearing hearing aids make deafness worse, but will not stop the natural progression of age-related deafness. It is important to go to a qualified hospital or a center with a high standard of hearing aids, and not to buy and wear them casually. To solve the noise problem, there are various advanced technologies that can improve the sound that needs to be heard and remove the unwanted noise. Digital hearing aids can achieve a very good hearing aid effect. An inner world that is abundant and full, harmonious, peaceful and in balance with its surroundings is an important part of health and a beneficial addition to and development of health. Many elderly people refuse to talk about their suffering after hearing loss and are reluctant to wear hearing aids for fear of affecting their children’s work and life. The inability to hear others will increase the psychological pressure of the elderly, and then reluctant to interact with others, and even suspicion and suspicion, depression and other phenomena; some people will also become withdrawn, eccentric personality; long time also easy to induce dementia. The onset of Alzheimer’s disease has no socio-economic demarcation. Studying and using the brain diligently is a good way to prevent Alzheimer’s disease. There are susceptibility and predisposing factors for Alzheimer’s disease. Care and communication among family members is also a good way to prevent Alzheimer’s disease.