Today, most areas of China’s atmospheric pressure, wind speed, temperature difference are in a state of extreme imbalance, cold air activity is frequent. Cold, low air pressure, temperature difference of the harsh climate, will make the human body in a state of stress, low temperature stimulation easy to make the body sympathetic nerve excitation, heart rate continues to accelerate, vascular contraction resulting in increased blood pressure, increased heart load, thus can cause the supply of blood to the heart of the coronary artery spasm, making the original narrowing of the blood vessels due to atherosclerosis and narrowing, and even the atherosclerosis plaques rupture bleeding, thrombosis, resulting in acute Blood vessel blockage, causing angina attacks and myocardial infarction. Cold weather can also cause spasm and contraction of small blood vessels on the surface of the body, so that the blood flow rate is slow, blood viscosity increases, aggravating the burden on the heart, so that myocardial hypoxia is aggravated. Therefore, the incidence of coronary heart disease angina attack and acute myocardial infarction increased significantly in the cold season. According to medical statistics, acute myocardial infarction has two peak periods each year, namely, November-January and March-April, the incidence rate of almost 65% of the annual incidence. Both of them are seasonal transition period with low temperature and big temperature difference, which seriously threaten people’s health. At the same time, winter is also a variety of respiratory diseases season, easy to cause colds, bronchitis and other respiratory diseases, once occurred will also affect the heart, induced angina attack coronary heart disease and myocardial infarction. In addition, the cold climate caused by people’s lifestyle changes, such as changes in dietary structure, reduced activity, smoking and drinking relatively more, emotional depression, etc., is also an important factor in the development of coronary heart disease in winter.