Mr. Zhang loves to snore in his sleep, which is known to his family and friends, and did not take it seriously. Mr. Zhang sleeps a lot during the day, and he feels sleepy all the time. When he falls asleep, he starts to snore, and the sound of his snoring can disturb his daughter in the next bedroom. Mr. Zhang’s snoring was intermittent, and sometimes he would wake up in his sleep because he was holding his breath. Later, Mr. Zhang went to the hospital accompanied by his family for a checkup and realized that he had “sleep apnea syndrome”. The impact of sleep apnea syndrome on the body is great. Clinical manifestations (1) snoring, which is different from simple snoring, with loud, very loud, irregular and intermittent snoring; (2) daytime sleepiness, with patients showing daytime weakness or drowsiness; (3) apnea during sleep, with heavier patients often holding their breath at night, or even sitting up suddenly, sweating profusely and feeling near death; (4) personality changes and other systemic complications, including irritability, loss of intelligence and memory, as well as loss of mental ability and memory. (4) personality changes and other systemic complications, including irritability, mental and memory impairment, sexual dysfunction, etc. In severe cases, hypertension, coronary heart disease, diabetes mellitus and cerebrovascular disease may result; (5) increased nocturia, and individual patients may experience enuresis; (6) headache, and due to hypoxia, patients may experience morning headache. Sleep apnea syndrome is a killer of human health, and the mortality rate associated with sleep apnea syndrome is high, so patients must pay attention to this disease.