Patients with cerebral infarction should pay attention to the following points in summer: 1. The higher temperature in summer will cause patients to sweat a lot, which will easily lead to hypotension due to insufficient blood volume, and hypotension will cause a decrease in cerebral perfusion, which will lead to infarction in the watershed area. Therefore, patients with cerebral infarction should pay attention to hydration in summer.2. In summer, water loss will lead to higher blood viscosity, therefore, patients with cerebral infarction should eat more fresh fruits and vegetables and less greasy and stimulating food to reduce blood viscosity, thus avoiding the formation of new blood clots locally in the blood vessels.3. In summer, some patients have hypotension due to vasodilation. Therefore, for patients with cerebral infarction combined with hypertension, the dose of antihypertensive drugs should be reduced appropriately according to the situation.