The onset of angina is urgent, so it is best for patients to be surrounded by a special emergency medicine box. First-aid medicine box should be equipped with quick-acting nitroglycerin tablets, cardiac pain, etc. When angina attacks, you can use nitroglycerin sublingual to reduce the heart load, reduce myocardial oxygen consumption, improve coronary blood circulation, so as to relieve angina, frequent attacks of angina can take cardiac pain, 1-2 tablets each time, 3-4 times a day. The following points should be noted when using the medicine box: 1. Each medicine bottle can only contain one kind of medicine, and must not be mixed, so as to avoid using the wrong kind of medicine in busy. 2. Always check the drugs in the medicine box to see if the types are complete, and any missing drugs should be filled in time. If there is deterioration, broken drugs should be replaced in a timely manner, especially nitroglycerin tablets expired must be replaced in a timely manner, so as not to affect the effect. 3, the treatment of angina drugs some afraid of moisture, some afraid of extrusion, some afraid of light, must be properly stored. 4, the medicine box should be carried on the body at all times, the medicine box should be placed in the pocket of the clothes which is convenient to take out and fixed, and the family should know about this pocket which contains the medicine box. When sleeping at night, the medicine box should be placed in the nearest place, so that it can be used in an emergency. 5, angina attack, in addition to medication, the patient must rest in place. If not relieved, the patient should be sent to hospital immediately for further treatment.