Patients with coronary artery disease should take sublingual nitroglycerin to relieve symptoms during acute attacks, and the symptoms can be gradually relieved after 1-2 min. Patients with mild coronary heart disease can take sublingual quick-acting heart pills or compound Danshin drops to improve coronary blood flow, which can activate blood circulation, remove blood stasis and relieve pain. If the patient is judged to have an acute heart attack, he should also take oral aspirin and clopidogrel at the same time, chew them up and give them to the patient orally.