Cardiovascular disease is prone to deterioration: Studies have shown that the morbidity and mortality rate of cardiovascular disease increases in cold weather when the daily minimum temperature drops below 0℃. Around “three nine” is the season of heart disease, hypertension is prone to deterioration, is also the season of stroke, acute heart attack. This is because the low temperature, the human blood vessels are prone to contraction, spasm, blood circulation resistance increases, so that blood pressure increases, the heart load increased, the blood vessel wall is easily damaged, leading to cardiovascular disease. Coping strategies: winter people’s blood pressure fluctuations, the elderly and more atherosclerosis, so the cold wave to pay special attention to strengthen self-care and prevention, pay attention to warmth, especially coronary heart disease and other cardiovascular patients to increase and decrease clothing bedding, try to avoid frequent access to the environment in the temperature difference is too large. In winter, the blood flow is slow at night, the blood viscosity is high, and the sudden and substantial exercise in the morning is very likely to induce cardiovascular and cerebrovascular diseases, so it is not advisable to do morning exercise in the early morning when the temperature is low. The elderly should not get out of bed immediately after waking up in the morning, but do some bed activities first to speed up blood flow, and then get up slowly. Overexertion and under-exercise are prone to cardiovascular diseases, so it is necessary to live regularly, combine work and rest, and arrange exercise time and exercise amount reasonably. Emotional excitement is a major taboo for cardiovascular disease, especially for patients with coronary heart disease and hypertension, who should maintain a balanced state of mind and not let their emotions rise and fall. People over 40 years old with a family history of coronary heart disease, diabetes, hypertension, hyperlipidemia, obesity and other high-risk factors should pay more attention to the symptoms of weakness, chest discomfort or pain during activities, palpitations, irritability, angina and so on.