Sleep breathing disorders are closely related to stroke. Sleep apnea is characterized by obstructive sleep apnea, which is characterized by recurrent complete or partial obstruction of the upper airway during nighttime sleep, resulting in apnea and hypoventilation, resulting in recurrent intermittent hypoxia, CO2 retention, recurrent increased negative intrathoracic pressure, recurrent awakenings, abnormal sleep architecture and reduced efficiency, daytime sleepiness, memory loss, and autonomic dysfunction. OSA is now recognized as a systemic disease, and in 2008 the American Heart Association (AHA)/American College of Cardiology Foundation (ACCF) issued a scientific statement that OSA is a newly recognized and intervenable independent risk factor for cardiovascular disease such as hypertension, coronary heart disease, heart failure, arrhythmias, and stroke. OSA has become a major public health problem. Stroke is the second leading cause of death in humans and the leading cause of death in China. There are more than 7 million stroke patients in China, the highest number of vascular diseases. The annual incidence rate of stroke is (116 – 219)/100,000 and the annual death rate is (58 – 142)/100,000, with 70% – 80% of survivors with varying degrees of disability, resulting in an economic loss of about 10 billion RMB. Kapen et al. first reported a high incidence of sleep apnea events in stroke patients in 1991. In 2011, the American Heart and Stroke Association identified sleep-disordered breathing as a risk factor for primary prevention of stroke.