If atherosclerosis occurs in the coronary arteries that supply blood to the heart, resulting in insufficient blood supply to the heart muscle or myocardial lesions, it is called coronary heart disease. Patients with coronary heart disease generally carry a first-aid medicine box, so as to have a “health care doctor”, in case of an attack, take the medicine in the box, can play a certain role in first aid. 1, when the angina attack, do not panic, you can sit on the ground, quickly take out the first aid medicine box. Bite 1-2 nitroglycerin tablets and hold them under the tongue for 1-3 minutes to relieve the pain. If the pain is severe and is not relieved by nitroglycerin tablets, wrap a vial of isoamyl nitrite in a handkerchief or cotton, crush it and put it in front of the nose and inhale. It works faster than nitroglycerin tablets and can work in half a minute after inhalation. But it can produce side effects such as a drop in blood pressure, generally not commonly used. 2, if angina is recurrent, you can take long-acting nitroglycerin tablets, 1-2 tablets 3 times a day. At the same time, use Pansentine, 3 times a day, 2 tablets each time, so that it can dilate coronary arteries and prevent arterial thrombosis. 3. In case of angina attack, such as nervousness, anxiety and insomnia at night, you can take Valium tablets, 3 times a day, 1-2 tablets each time. However, patients suffering from glaucoma should not use isoamyl nitrite and Valium tablets. Caution: 1. Take the above-mentioned drugs mainly for first aid, and then go to the hospital for further consultation and treatment. 2.The types of drugs in the first-aid kits produced in different places are not the same, so you should follow the instructions or follow the doctor’s orders. 3.The medicine in the first-aid box should pay attention to the expiration date, and should be replaced and replenished in time. Nitroglycerin tablets are generally replaced once a year, so as to achieve the “answer to every request”.