According to statistics, there are more than 20 million people with hearing and speech impairment in China, and deafness has become a common disease that seriously endangers people’s health. At present, there are 1.17 million deaf children between 1 and 14 years old in China, and 20,000 to 30,000 deaf children are born every year. There are two types of deafness in general. Those caused by diseases of the outer ear and middle ear are called conductive deafness; those caused by lesions of the inner ear auditory organs or the auditory nerve are called sensorineural deafness. There are many causes of deafness, both congenital and acquired. Common causes include familial genetic inheritance, viral infection, drug-related deafness, birth injury, inflammation (such as purulent otitis media, labyrinthitis, etc.), tumor (such as auditory neuroma, pontocerebellar horn tumor), trauma (such as traumatic brain injury, temporal bone fracture, various ear trauma), etc. In addition, in recent years, playing cell phone, listening to Mp3, singing at KTV, bouncing disco have become the main lifestyle of more and more young people to relieve stress. However, these long-term high noise stimulation can cause spasm of small blood vessels in the inner ear, ischemia, and stimulate damage to hair cells, which can seriously affect people’s hearing and become a hearing killer. For conductive deafness, prevention of in-ear infections is the key. Be careful not to pull out your ears with your hands or other objects; prevent dirty water from entering your ears when swimming or bathing. Some inflammation in the nose may also affect the middle ear, so nasal inflammation should be actively treated when it is detected. Once sensorineural deafness occurs, it is very difficult to treat, so prevention is very crucial. The main prevention of congenital deafness is to avoid marriage between close relatives; for women who are pregnant, especially during the first trimester, they should pay attention to prevent colds, especially viral colds. Care should also be taken not to be infected by rubella virus and cytomegalovirus. Pregnant women generally do not receive prophylactic injections, do not expose their abdomen to radiation, and prohibit ototoxic drugs, all of which can impair the development of the fetal inner ear and lead to hearing loss. The safe sound level for the ear is 85 decibels; exceeding this value can cause damage to the auditory nerve of the ear. Usually there is a high level of noise in specific environments such as artillery units, textile workshops, machinery manufacturing plants, etc. Using special protective ear plugs can play a protective role. In addition, people should not stay in the disco for too long, and it is best not to use earplugs for more than one hour a day, and the volume should not be too loud to avoid auditory fatigue. Develop a good lifestyle and habits, quit smoking and avoid alcohol (nicotine poisoning and chronic alcoholism in cigarettes can directly damage the auditory nerve and nerve center. (Cerebrovascular stretching dysfunction caused by tobacco and alcohol). Certain ototoxic antibiotics such as streptomycin, gentamicin, kanamycin, neomycin, etc., as well as some other drugs (aspirin and tachyphylaxis, quinine, etc.) are drugs that can easily cause damage to the hearing. Adjustment of mental state, when people are highly nervous or anxious and angry, the secretion of adrenaline in the body increases, which can cause spasm of the small arteries in the inner ear and slow blood flow in the small vessels, resulting in insufficient oxygen supply to the inner ear, leading to sudden deafness. Work and rest should be reasonably arranged and not overworked. Scientific diet, avoid “three highs and one low” (high sugar, high salt, high cholesterol, low fiber), eat more trace element-rich foods such as coarse grains, vegetables, seafood, etc., and actively prevent autoimmune diseases such as hypertension, arteriosclerosis, diabetes, etc.