Coronary heart disease is the narrowing or blockage of the coronary arteries. Ways to prevent coronary heart disease include quitting smoking, controlling blood pressure, controlling blood lipids, controlling diabetes and other daily life management. 1. Smoking is a major risk factor for coronary heart disease. Nicotine can damage the inner layer of blood vessels and increase the incidence of coronary heart disease. Therefore, quitting smoking is one of the best ways to prevent coronary heart disease. 2. Normally, we should pay attention to monitoring blood pressure, preferably within 120/80, the higher the blood pressure, the greater the damage to blood vessels. At the same time, pay attention to controlling blood lipids, especially low-density lipoprotein. If you have diabetes, you should strictly control blood sugar to reduce the risk of heart disease. At the same time to moderate exercise, eat more fruits and vegetables.