Performance: often interrupt when talking; TV and radio volume is very high; feel irritated by excessive sound; Sichuan Province, the eight rehabilitation center eye otorhinolaryngology Hu Ruidan listening to the sound of the habit of side head, body leaning forward; reluctance to interact with people, froze. Worldwide, 40% of elderly people over 65 years old have hearing disability. There are more than 20 million elderly deaf patients in China. Age-related deafness is a slow progressive aging process of the auditory organs along with other tissues and organs in the body. Hazards: Early detection is not easy to hear car horns and other warning sounds, resulting in safety accidents Long-term hearing loss leads to a lack of communication, communication barriers, affecting physical and mental health Prevention: Happy mood, healthy diet, moderate exercise, more interaction, reduce noise exposure. Treatment: Hearing aids can help most elderly people to improve their hearing condition. A hearing aid is a sound amplification device. Nowadays, the common hearing aids are electronically programmed, and the sound is clearer and more natural than traditional hearing aids. Hearing aids that have been scientifically fitted will not cause hearing loss. The main types are behind-the-ear, in-the-ear, canal, and deep ear canal. Scientific hearing aid fitting: necessary audiological evaluation. Early fitting. The right type of hearing aid is chosen by combining appearance, economy and practicality. Follow-up adjustment is essential. Precautions for wearing hearing aids: from small to large sounds, from quiet to noisy, gradually adapt. The wearing time is from short to long.