Some people mistakenly believe that the elderly should not use hearing aids as a last resort if they are deaf. On the one hand, they do not understand that in terms of effectiveness, the current hearing aids are no longer comparable to those of the past; on the other hand, they are worried that hearing aids will aggravate hearing loss. In fact, hearing aids are beneficial but not harmful to the elderly. Most professionals rely on the results of hearing tests to determine whether an elderly person needs to use a hearing aid, which is correct, but not comprehensive enough. There are two ways to look at the issue: First, if the hearing test proves that a hearing aid is needed, then a hearing aid should be prescribed immediately. Secondly, even if the hearing test results do not prove that hearing aids are necessary (e.g., the degree of deafness is not yet very severe), as long as the elderly subjectively believe that they need hearing aids, they must still be fitted with them. This is because hearing is a high-level, integrated, subjective feeling, and then modern audiometric technology is difficult to show its full picture, and their subjective feeling can make up for the lack of audiological examination. Therefore, “need” is also a signal. Once the elderly in life and work in the hearing difficulties, all means that the need for hearing aids, should be tested and fitted with hearing aids. In fact, there are two groups of people for whom it is better to get hearing aids sooner rather than later: children, who need hearing aids to learn language. The other group is the elderly, who are deaf and should use hearing aids as soon as possible. Because, the elderly deafness will gradually aggravate with age, sooner or later to use hearing aids, and early use of hearing aids can slow down the process of hearing degradation, why not early use? It is a mistake to wait until you have to use hearing aids to consider them.