After an attack of stable angina, one should immediately rest, stop activities, and immediately take sublingual nitroglycerin or isosorbide nitrate so that the symptoms can be relieved quickly. Patients with frequent episodes of stable angina should be careful not to exert themselves, not to be emotionally excited, not to eat too much, not to be stimulated by cold, and should take long-term oral aspirin, isosorbide mononitrate, metoprolol, enalapril, etc. to treat coronary heart disease and relieve the symptoms of frequent attacks of angina. It is also important to control blood pressure, blood sugar, blood lipids and blood uric acid to further protect the coronary vessels of the heart in order to avoid further aggravation of obstruction and narrowing of coronary vessels. If angina is not relieved by rest and nitrates, the patient should be hospitalized for further examination and treatment, such as coronary angiography, to clarify the degree and location of obstruction of the patient’s blood vessels and to guide further treatment.