Stroke, also known as stroke, is a major chronic disease that endangers the health of our residents, 1.3 million people die of stroke each year, one person has a stroke every 12 seconds, one person dies of stroke every 21 seconds, 2.7 million new cases each year, and the trend is rising year by year and the trend of youth, the World Health Organization data show that the incidence of stroke in China is increasing at an annual rate of 8.7%. The World Health Organization data show that the incidence of stroke is increasing at a rate of 8.7% per year. The main reason is that cold weather can lead to peripheral vasoconstriction, which increases the load on the heart and induces a lack of blood supply to the heart and brain, and cold weather can easily lead to an increase in blood viscosity, which increases the chance of cerebral thrombosis. Some data show that for every 10 degree drop in temperature, blood pressure rises by 5 mmHg, and elevated blood pressure can induce hypertensive cerebral hemorrhage or cerebral infarction. Cold weather also causes many elderly people to exercise less outdoors and gain weight, which is also a cause of stroke. Therefore, the cold weather should pay attention to the following aspects of stroke prevention: 1, not easy to go out too early in the morning, should pay attention to keep warm when going out, not too long outside in the morning exercise. 2. Keep your blood pressure stable, test it daily, and adjust your antihypertensive medication appropriately. About 30% of cerebral infarction patients will have a small stroke warning when they have a major attack, such as transient dizziness, transient numbness and weakness of limbs, transient distorted mouth and eyes, drooling; transient unfavorable speech, etc. If you have any of these symptoms or warning signs, you should go to the hospital at the first time; if you have a stroke attack, such as hemiplegia, aphasia or even coma, you should call the emergency system at the first time and go to a hospital with thrombolysis or arterial thrombolysis. The general public should know more about stroke.