Hearing aid technology now follows Moore’s Law, with “super technologies” coming out every year or two. But are these technologies really addressing the needs of patients? The first step for scientists, especially researchers, is to understand the needs of patients thoroughly. Instead of sitting in the laboratory to achieve our “technical height” according to the current level of science and technology. 1, the hearing aid performance needs: (1) wear hearing aids to hear clearly, sound quality tone to natural soft; (2) wear hearing aids in a noisy environment can hear their own need to hear the sound of speech, other environmental noise as much as possible; (3) wear hearing aids without ear blocking feeling, no echo; (4) wear hearing aids can hear the sound of television; (5) wear hearing aids can easily hear the phone; ( (6) Hearing aid can hear the speaker clearly in a meeting; (7) Hearing aid can hear clearly and comfortably in a small or large party; (8) Hearing aid can hear clearly from 5 meters away; (9) Hearing aid can be fixed firmly and not easy to lose; (10) Hearing aid’s battery can be used for a longer time, preferably without changing the battery, and can be recharged; (11) Hearing aid can be used to enjoy music and singing like normal people (12) The hearing aid can reach the hearing level of normal people; (13) The hearing aid can adjust the volume by itself; (14) The hearing aid can be adapted quickly without 2-3 months adaptation period; (15) The service life of the hearing aid is extended. 2.The demand for hearing aid price: cost-effective, preferably cheap, good performance and comfortable to wear. 3.Demand for the appearance of hearing aids: Wearing hearing aids does not affect the aesthetics, and BTE is best made to fit the appearance of various decorations for all ages. 4, other aspects of hearing aid needs: (1) hearing aids can treat deafness and tinnitus; (2) hearing aid adjustment can be remotely adjusted, without the need for patients to go to hospitals or stores to adjust the machine.