Experts point out that tobacco can cause coronary heart disease in many ways, smoking can also promote platelet aggregation and promote the formation of blood clots. Therefore, the risk of coronary heart disease in smokers is much higher than usual, and the prevention and treatment of coronary heart disease cannot be separated from smoking cessation. Unfortunately, most people still lack understanding of the relationship between tobacco dependence and coronary heart disease. 2002 national smoking epidemiological survey results show that less than 30% of respondents recognize that smokers are vulnerable to coronary heart disease. In contrast, about 70% of respondents were already aware that smoking may cause lung cancer. In fact, coronary heart disease ranks only third after chronic obstructive pulmonary disease (COPD) and lung cancer as the cause of death among Chinese smokers. There are many risk factors that may lead to coronary heart disease and myocardial infarction. Scientists have summarized nine independent risk factors that lead to coronary heart disease, smoking ranks second, after high blood pressure, diabetes ranked more than high blood pressure. Nowadays, many people attach great importance to lowering blood pressure, sugar and blood lipids, but they do not take smoking cessation seriously. Many people suffer from myocardial infarction when they are less than 50 years old, and their blood pressure is not high, their blood sugar is not high, and they are not even obese, the only explanation is that they smoke a lot. Patients with coronary heart disease can reduce their mortality rate by 36% if they quit smoking, and if coronary heart patients want to reduce their mortality rate, the best way to do so is to quit smoking. Studies have shown that within 20 minutes of smoking the last cigarette, blood pressure drops and body temperature and heart rate return to normal; within 24 hours, the patient’s risk of myocardial infarction begins to decrease; within 1 year, the risk of coronary heart disease can be reduced by 50%; within 5 years of quitting smoking, the risk of stroke or cerebral hemorrhage can be reduced to a level similar to that of nonsmokers; within 15 years of quitting smoking, the risk of coronary heart disease can finally be reduced to a level similar to that of nonsmokers. Within 15 years of quitting, the risk of coronary heart disease could eventually be reduced to a level similar to that of nonsmokers. In October 2008, at the 19th Great Wall International Cardiology Conference, many cardiovascular experts unanimously appealed that tobacco dependence has become the number one killer of people’s health in China, and that smoking cessation is indispensable to prevent and treat coronary heart disease.