There are many factors or diseases that are closely related to the initial onset or recurrence of stroke, called “stroke risk factors”. There are many risk factors for stroke, among which advanced age, race, and family history of stroke are uncontrollable risk factors, while hypertension, heart disease, diabetes, hyperlipidemia, hyperlipidemia, obesity, smoking, and history of stroke or transient ischemic attack are controllable risk factors. 1. Hypertension: Hypertension is the most common and important risk factor for stroke, and treatment of hypertension can reduce the occurrence of stroke. Adults should have their blood pressure checked at least once a year. 2, diabetes: diabetes can not only induce and accelerate cerebral atherosclerosis, but also increase the risk of cerebrovascular thrombosis and embolism through several pathways. Therefore, it is important to check blood sugar regularly. 3, heart disease: Many heart diseases may lead to stroke, such as atrial fibrillation, myocardial infarction, left ventricular hypertrophy, etc. Doctors can initially know if there is an arrhythmia by pulse palpation and heart auscultation. The diagnosis can be further clarified by electrocardiography or echocardiography. 4, smoking: compared with non-smokers, the risk of stroke increases 2 times in smokers. 5. History of atherosclerosis or cerebrovascular disease: Those with intracranial and extracranial atherosclerosis can cause narrowing of the carotid lumen or detachment of sclerotic plaque, leading to stroke. People with a history of stroke or transient ischemic attack have a significantly higher risk of having another stroke. 6. Transient ischemic attack: itself a type of ischemic stroke classification, it can also be a precursor or anterior area symptom of cerebral infarction and should be treated promptly. 7, blood rheology disorders: cerebral blood flow decreases when whole blood viscosity increases, where increased erythrocyte ratio and increased fibrinogen level are the main risk factors for ischemic stroke.