In recent years, air pollution has emerged in many areas of China, especially in winter, when the degree of haze is heavy. Although the relevant departments of our government have taken a variety of positive measures to deal with the air quality has improved significantly compared to the previous, hazy weather still exists in some areas. As we all know, haze contains a variety of harmful substances that cause harm to several systems and organ tissues of the human body, especially for the human whistling system and cardiovascular system. Air pollution is an important factor in the development and deterioration of whistle system diseases such as asthma, chronic lung disease and lung cancer, while its cardiovascular effects are less well understood. This article makes a statement on the impact of air pollution in on cardiovascular? First, the main components and sources of pollutants in hazy weather Hazy weather is a state of atmospheric pollution, haze is a general expression of the content of various suspended particles in the atmosphere exceeds the standard, especially PM2.5 is considered to be the “culprit” of hazy weather. With the deterioration of air quality, the phenomenon of hazy weather has increased, which is more harmful to human body and nature. The components of air pollutants in hazy weather mainly include particulate matter, sulfur oxides, nitrogen oxides, carbon monoxide and hydrocarbons. Industrial enterprises are the main source of air pollution, and their emissions mainly come from the combustion of fuels, of which industrial fuels are mainly coal and, to a lesser extent, oil. Whether the combustion of fuel is complete or not determines the type and quantity of pollutants produced. The more incomplete the combustion of fuel is, the greater the type and quantity of pollutants produced and their toxic effects. In addition, the production and living process can also produce the emission of a large number of air pollutants. For the size of pollutant particle diameter is divided into PM2.5, PM10, etc. With the increasingly severe situation of air pollution in China, the incidence of hypertension among Chinese residents has gradually increased, which has prompted more research to explore the relationship between air pollutants and hypertension and the possible pathogenesis. Second, the impact of hazy weather on cardiovascular health Air pollution, especially hazy weather, not only aggravates the condition of patients who already have heart disease, but also plays a role in the development of these diseases. The pollutants in haze also have a large impact on human cardiovascular disease, which can impede normal blood circulation and damage to the vascular endothelium, which in turn can lead to cardiovascular disease, hypertension, coronary heart disease, cerebral infarction and other cardiovascular diseases, as well as chronic bronchitis appearing pulmonary heart disease. Multiple studies have confirmed that long-term exposure to air pollutants can seriously affect cardiovascular diseases, especially respirable fine particulate matter (PM2.5) with a diameter of ≤2.5µm, which can not only lead to a variety of lung diseases, but also promote the development of cardiovascular diseases such as hypertension. Studies have also shown that both short-term and long-term exposure to air pollutants PM2.5 have important effects on circulatory diseases such as hypertension, myocardial infarction, and arrhythmias, with PM2.5 having a particularly pronounced effect on hypertension as both a cardiovascular disease and a risk factor for cardiovascular disease. Additional studies have shown that long-term air pollution is associated with an increased incidence of coronary heart disease, and can also increase the risk of increased risk of fatal or non-fatal coronary artery disease. One study showed that long-term air pollution exposure was associated with an increased incidence of heart failure. First, reduce the time spent outside in hazy weather, especially for patients with cardiovascular disease, and if you must go out, wear an anti-haze mask to prevent dust particles from entering your body. When you return from an outing, you should immediately wash your face and exposed skin. Secondly, the haze weather is as little as possible to open the window ventilation, wait for the haze to dissipate in time to open the window ventilation, and finally, the diet should choose light, easy to digest and rich in vitamin food, drink more water, eat more fruits and fresh vegetables.