”How much is the PM today?” The aunt next door asked?PM value has been familiar to every household. The Ministry of Environmental Protection admits that, according to air quality monitoring results and meteorological forecast analysis, at present, the hazy weather that has appeared in the central and eastern parts of China, such as North China, Yellow Huai, Jianghuai and Jiangnan, is still persisting, and many places suffer from severe pollution, which adversely affects the production and life of the people and their health. Atmospheric pollution not only infringes on our airways. Numerous studies have shown that long-term exposure to air pollution, especially insoluble particles, is closely related to the development of cardiovascular disease. Literature published in the European Cardiovascular Journal in 2013 reported that patients with myocardial ischemia may be more sensitive to air pollution. A related study was conducted at the London School of Hygiene and Tropical Medicine with the aim of elucidating the impact of the level of air pollution exposure on patient prognosis. The results showed that air pollution had a significant effect on all-cause mortality in patients with heart disease. In England and Wales, all-cause mortality was significantly higher in surviving patients admitted with acute coronary syndrome when exposed to PM2.5 air pollution. Therefore for patients with coronary heart disease myocardial infarction, we should be aware of the potential hazards associated with environmental issues while advocating increased outdoor exercise. The recommendations for these patients are to have air cleaning devices installed indoors that remove insoluble particles, to avoid outdoor exercise as much as possible in heavily polluted weather, to do a moderate amount of physical activity indoors, and to go out with a thick mask to avoid the second blow to the heart from environmental pollution.