As coronary heart disease can easily induce angina, heart attack and other diseases, therefore, coronary heart disease patients in addition to pay attention to warmth, regular living, etc., must always have the following four kinds of drugs at home. 1, nitroglycerin: for patients with coronary heart disease, nitroglycerin is an emergency drug, often called “life-saving drugs”, as long as a sublingual piece, within a minute or two, can quickly dilate blood vessels, improve oxygen supply, and thus achieve the purpose of pain relief. And the side effects are small, even if not diagnosed with coronary heart disease, once the chest pain, you can also take. 2, isosorbide nitrate (cardiac pain): similar to nitroglycerin, isosorbide nitrate can also play the role of dilation of arterial and venous vessels, to relieve the symptoms of angina pectoris. The difference is that isosorbide nitrate has a longer duration of action and a slower onset of action, so it is usually not used as an emergency drug. Only the use of nitroglycerin does not work, or a very small number of patients allergic to nitroglycerin can be used. 3, aspirin: aspirin can act on platelets to control their aggregation to form plaques, about 100 mg per day, long-term use, can greatly reduce the chances of blood clots. 4, statin: statin can lower blood lipids, in addition, it also has the role of stabilizing plaque, can be taken for a long time, in order to avoid the blood vessels by the shedding of plaque blockage.