Tertiary prevention of coronary heart disease: 1. Primary prevention of coronary heart disease Primary prevention of coronary heart disease is mainly for intervention of risk factors of coronary heart disease. Prevention strategies include population-wide strategies and high-risk individual strategies. The population-wide strategy is a developmental strategy, mainly creating a supportive environment and mass media-based health education; the high-risk individual strategy mainly focuses on individuals with risk factors for coronary heart disease, such as smoking, obesity, hypertension, dyslipidemia and diabetes, etc., to provide active and targeted education and guidance. 2.Secondary prevention of coronary heart disease Secondary prevention of coronary heart disease mainly includes early detection, early diagnosis and treatment of patients with coronary heart disease to delay the development of the disease and avoid complications and time of acute coronary heart disease. 3.Tertiary prevention of coronary heart disease Tertiary prevention refers to active treatment of complications and reasonable and appropriate rehabilitation treatment to reduce mortality and prolong the life of patients.