Coronary artery disease is a heart disease caused by atherosclerosis or dynamic lesions in the coronary arteries, which narrow or block the lumen of the blood vessels and cause myocardial ischemia and hypoxia, also known as ischemic heart disease. Clinically, it is divided into five categories: asymptomatic type, angina pectoris type, myocardial infarction type, heart failure or arrhythmia type and primary cardiac arrest. Nursing requirements: 1. Patients in recovery or remission still need to rest sufficiently room should be quiet, avoid noise; appropriate activities, but not strenuous exercise, to avoid fatigue. 2, a reasonable diet, to light, easy to digest, low-fat and low-salt diet, more food rich in unsaturated fatty acids, such as fish; more food rich in vitamin C and group fiber and fresh and fruit; strictly prohibit overeating or overfull, can eat less and more meals. 3, maintain an optimistic, relaxed mental state, avoid tension, anxiety, emotional excitement or anger. 4, keep the stool smooth, do not force when stool. 5, quit smoking, drink less alcohol; do not drink strong coffee and tea, regular life, ensure sufficient sleep; pay attention to warmth, prevent upper respiratory tract infections. 6, the use of drugs for the condition, should not be too much; angina pectoris or myocardial infarction suddenly, should be immediately sublingual nitroglycerin or heartburn, quick-acting heart pills, etc., the condition is not relieved can contain drugs again. 7, coronary heart disease patients should carry home with the above emergency drugs, so that when the onset of their own or family members can get and take in a timely manner, should regularly go to the hospital for health checks.