Weather change is one of the important triggers of cardiovascular disease, we know that cold weather in winter is the high incidence of heart disease, but the weather from cold to warm is also an important cause of heart disease, especially heart failure. The main reasons for the increase in heart load due to the rise in temperature are: with the rise in temperature, the human metabolism will be significantly accelerated, the human subcutaneous blood vessels expand, skin blood flow increases 3-5 times more than usual, the blood flow back to the heart also increased significantly, which will inevitably increase the burden on the heart; people in a high temperature state, sympathetic excitability increased, heart rate accelerated, coronary artery contraction, thus increasing the workload of the heart Sweating, water evaporation through sweat, blood viscosity increases, leading to blockage of the heart and cerebral vessels, which can cause myocardial infarction or stroke in serious cases; humidity in the air increases, the oxygen content is relatively lower, leading to hypoxia; another important reason is that the weather changes easily cold, and elderly cardiovascular patients due to reduced resistance to lung infections, thus increasing the burden on the heart. Therefore, when the weather turns warm, special attention should be paid to reduce the burden on the heart. In addition to the usual things that cardiovascular patients need to pay attention to (such as reasonable diet, appropriate exercise, weight control, quit smoking and alcohol, etc.), they should increase and decrease their clothing in time, pay special attention to the prevention of colds, and adjust the dosage and type of medication to reduce the burden on the heart as much as possible, so as to ensure a healthy heart to enjoy the natural spring.