Primary sleep apnea is caused by a variety of causes, upper airway obstruction and central respiratory depression, with recurrent, shallow or suspended breathing with or without snoring during sleep, as well as daytime drowsiness and fatigue as the main symptoms, and its main pathophysiological damage to the organism is intermittent sleep, hypoxia and destruction of sleep structure, highly susceptible to cardiovascular, cerebrovascular and other multi-systemic comorbidities, and in severe cases can occur Sudden sleep death. Clinically, sleep apnea is divided into two types, obstructive and central, according to the presence or absence of airway obstruction and central nervous system effects when respiratory events occur, with obstructive sleep apnea syndrome, which has a much higher incidence than central sleep apnea.