Stroke prevention can be divided into two phases according to the timing of intervention intervention. 1. Primary prevention: Prevention is carried out in healthy people or people with stroke risk factors but without stroke symptoms. It refers to prevention before the onset of stroke, i.e., to prevent or delay the onset of cerebrovascular disease by changing unhealthy lifestyles at an early stage and proactively controlling various risk factors. From the epidemiological point of view, only primary prevention can reduce the incidence of the disease in the population. Therefore, for cerebrovascular disease, which has a high mortality and disability rate, the significance of paying attention to and strengthening primary prevention is much greater than secondary prevention. 2. Secondary prevention: prevention for patients who have already developed stroke symptoms, such as transient ischemic attack or a history of stroke attack. Risk factors for stroke are generally divided into two categories: one cannot be interfered with, such as age and genetics; the other can be interfered with, and if the identified and modifiable risk factors can be effectively interfered with, stroke incidence and mortality can be significantly reduced. The main risk factors for stroke are hypertension, diabetes mellitus, atrial fibrillation, hypercholesterolemia, carotid artery disease, and smoking and alcohol consumption.