Winter is a period of high incidence of heart disease. The reason for this is that the cold air that rages in winter can put a cardiovascular burden on patients with underlying heart disease and aggravate myocardial ischemia. In addition to winter, spring is also a high incidence period for heart disease. Cold air causes cardiovascular constriction, elevated blood pressure, and increased heart rate. And there is also the possibility of cardiovascular spasm, which can also cause myocardial ischemia, which can lead to a serious heart attack. Spring is warmer than winter, but there is still cold air that can be easily ignored, so the weather is usually cooler in the morning and evening, which can easily cause cardiovascular spasms or strengthen contractions, leading to heart disease. Therefore, patients with underlying heart disease in winter as well as spring, such as the high incidence of heart disease, should pay attention to good health care and protection, moderate exercise, physical fitness, as well as pay attention to add clothing.