Every year, July-August is the hottest season in the north, and the scorching heat and summer heat are the high incidence of cerebrovascular disease, because high temperature easily leads to blood pressure fluctuations, emotional stress, rising blood viscosity, and poor sleep, which are four important triggers of acute cerebrovascular disease (stroke, strokes). Therefore, the hot weather to prevent stroke in daily life. First, to prevent heat and cool down more water, you can drink salt drinks in moderation, especially in the morning it is recommended to drink a large glass of plain water on an empty stomach. Second, to ensure adequate sleep, long days and short nights in summer and the quality of sleep at night is not high, it is best to nap during the day, even if it is very short, such as half an hour. Three is to maintain an optimistic and relaxed mood, appropriate exercise, you can walk in the morning and evening. Fourth, a reasonable diet, limit the intake of fat and cholesterol, vegetable oil should not be consumed in excess, pay attention to the meat and vegetarian mix, coarse and fine mix, not eat more meat and eggs, pay attention to the supplement of dairy, soybean products protein, eat more vegetables and fruits and other foods rich in vitamin C, carotene and minerals to enhance resistance. Ischemic cerebrovascular disease is the most common, such as cerebral infarction, and most cerebral infarction had different degrees of carotid atheroma plaque formation and carotid artery stenosis. Its early stage often manifests as intermittent dizziness; transient blackness in front of the eyes, especially in one eye; transient numbness and weakness of one limb; transient slurred speech, etc., which is known as TIA symptoms (transient ischemic attack). If you have the above conditions, you should go to the hospital for carotid ultrasound examination in time. Especially if you are over 50 years old, have diabetes or hypertension, high blood pressure, or are a sedentary worker, you should go for it. If carotid artery stenosis is found to be more than 50%, early intervention and treatment should be done, which can prevent cerebral infarction and the resulting hemiplegia and aphasia.