Stroke is divided into three levels of prevention. Primary prevention refers to prevention before the onset of stroke, that is, prematurely changing poor lifestyles and actively screening and managing various risk factors, while achieving the goal of keeping cerebrovascular disease from occurring or delaying its occurrence. Risk factors mainly include cerebral infarction, hypertension, heart disease, dyslipidemia, increased blood viscosity, hyperuricemia, smoking, alcohol consumption, and diabetes, all of which should be actively controlled to reduce risk factors. Secondary prevention refers to patients who have had a stroke or transient ischemic attack, and it is important to actively search for the cause of the occurrence and treat the factors that may cause it, so as to reduce stroke recurrence. For example, when screening is performed for TIA attacks, high blood pressure and high blood sugar can be detected, and active control of blood pressure and blood sugar will reduce TIA attacks and even reduce the occurrence of cerebral infarction. Tertiary prevention refers to active rehabilitation exercises as well as prevention of recurrence after disability has occurred in stroke patients.