Prevention of coronary heart disease 1, a reasonable diet, do not favor food, should not be excessive. To control high cholesterol, high fat food, eat more vegetarian food. Also to control the total calorie intake and limit weight gain. 2, life should be regular, avoid excessive tension; keep enough sleep, cultivate a variety of interests; keep emotional stability, avoid impatience, excitement or sullenness. 3, maintain appropriate physical exercise activities to enhance physical fitness. 4, do not smoke, alcohol: smoke can make the artery wall contraction, promote atherosclerosis; and alcohol is easy to emotional excitement, blood pressure rise. 5, active prevention and treatment of chronic diseases of the elderly: such as hypertension, hyperlipidemia, diabetes, etc., these diseases are closely related to coronary heart disease. First-aid medicine for coronary heart patients 1, nitroglycerin: take 1 piece of chewed and sublingual when angina attacks. 2. Isomeric nitrite: for emergency use when there are signs of myocardial infarction such as panic, sweating and shortness of breath. Note: Do not use 2 tablets of this medicine at the same time. 3, cardiac pain: treatment and prevention of angina attack, 1 to 2 tablets each time, 3 times a day, change to 1 tablet after alleviation. 4, Valium: with mental tension, anxiety, insomnia and other conditions to take, 3 times a day, 1-2 tablets each time. 5.Pansentin: dilate coronary arteries, increase blood flow and myocardial oxygen supply, prevent thrombosis. Take 25-30 mg 3 times a day. Self-measurement of signs of coronary heart disease 1.Posterior sternal or precordial pain, or tightness-like pain, radiating to the left shoulder and left upper arm, lasting 3-5 minutes when exertion or mental tension occurs. 2.Physical activity with chest tightness, palpitation, shortness of breath, relieved after rest. 3.The appearance of exercise-related headache, toothache, leg pain. 4.Chest pain and palpitations when full, cold or watching thrillers. 5.Sleeping requires high pillow position; sudden chest pain, palpitations and difficulty in breathing when lying down, which can be relieved by sitting up or standing up immediately. 6.Discomfort such as panic and chest tightness when having sex or having difficulty in defecation. 7.Hearing noise with heart panic and chest tightness. 8.Recurring irregular pulse, unexplained tachycardia or bradycardia.