The main component in cigarettes is nicotine, also known as nicotine, which is the main source of addiction. The stimulating effect of nicotine on the heart increases the load on the heart and increases myocardial oxygen consumption, causing hypoxia in the arterial walls and the myocardium. Nicotine also stimulates the conduction system of the heart, inducing tachycardia and other types of arrhythmias. It can also increase blood cholesterol levels and decrease high-density lipoprotein levels. Our epidemiological survey data show that the incidence of coronary heart disease is 2-6 times higher in heavy smokers than in nonsmokers, and the incidence of angina pectoris is 3-6 times higher. In the United States, the United Kingdom, Canada and Sweden, observations of 12 million people showed that the total mortality, cardiovascular morbidity and mortality among men who smoked increased 1.6 times more than nonsmokers, and the relative risk of fatal and nonfatal myocardial infarction was 2.3 times higher among smokers than nonsmokers. Particularly serious is that smoking induces coronary artery spasm, which slows blood flow in the coronary arteries, reduces blood flow, and increases the viscosity of the blood, leading to myocardial hypoxia and even causing myocardial infarction. Chinese medicine believes that smoke is a hot poisonous products, long-term inhalation will lead to heat poison gathered in the body, heat burn Jin injury, blood robbed, so that the blood is sticky, does not run smoothly, stay in the blood vessels, become blood stasis, blood stasis blocking the heart vessels, can lead to the occurrence of coronary heart disease.