The golden triangle order of heart failure treatment is angiotensin-converting enzyme inhibitors and angiotensin II receptor antagonists, beta-blockers, aldosterone receptor antagonists. 1. Angiotensin-converting enzyme inhibitors and angiotensin II receptor antagonists: such as enalapril hydrochlorothiazide tablets, valsartan amlodipine tablets, etc., should be prohibited for patients with bilateral renal artery stenosis, severe renal impairment, and hypertension, which may result in adverse reactions such as dry cough, elevated blood potassium, and vasoneurotic edema. 2. β-blockers: such as metoprolol succinate extended-release tablets, bisoprolol amlodipine tablets, etc. They are mainly used to stabilize heart failure. They should be contraindicated in the acute phase of heart failure. It should also be contraindicated in patients suffering from acute myocardial infarction, morbid sinus node syndrome, severe atrioventricular block, severe bronchial asthma and severe peripheral vascular disease, which may result in adverse reactions such as bradycardia and dizziness. 3. Aldosterone receptor antagonists: such as spironolactone tablets, mainly for patients with left ventricular ejection fraction less than 40% and cardiac function III-IV. The use of this product can cause hyperkalemia, gynecomastia, impotence, gynecomastia swelling and pain, hair growth and other side effects, hyperkalemia should be prohibited. Caution should be exercised in patients with hepatic or renal insufficiency, hyponatremia and anuria. It is recommended to consult a doctor for relevant examination in time and, according to the specific situation, carry out symptomatic treatment under the doctor’s guidance.