Heart failure is a variety of heart disease caused by cardiac decompensation, cardiac excretion of blood flow reduction of the disease, you can choose diuretics, angiotensin-converting enzyme inhibitors, β-blockers, positive inotropic agents, nitrates and other drugs. 1. Diuretics: such as thiazides, can increase the urine volume to reduce thereby reducing fluid retention and lowering the cardiac load. The use can cause hypokalemia, decreased glucose tolerance, fat metabolism disorders and other side effects. They should not be used if you have diabetes or gout. 2. Angiotensin-converting enzyme inhibitors: such as captopril, can delay ventricular remodeling, improve cardiac function and reduce clinical symptoms. However, there can be angioedema, dry cough, renal impairment and other adverse reactions, allergic to the drug or have hypertension, hyperkalemia is prohibited. 3. β-blocker: such as metoprolol, can inhibit the excitability of sympathetic nerves, can improve the prognosis. After taking it, there can be adverse reactions such as bradycardia, fatigue and headache, and it is forbidden for those who have bronchial asthma and atrioventricular block of type II or above. 4. Positive inotropic drugs: such as digoxin, can slow down the heart rate, inhibit the conduction of the heart, relieve the symptoms of heart failure. However, there may be nausea and vomiting, headache, blurred vision and other adverse reactions, allergy, hypertrophic obstructive cardiomyopathy and other patients are prohibited. 5. Nitrate drugs: such as sodium nitroprusside, can dilate blood vessels, so that the resistance of peripheral blood vessels to reduce, thereby reducing the anterior and posterior load on the heart, reduce the symptoms of heart failure. There may be dizziness, sweating, irregular heart rate and other adverse reactions. It is recommended that the medication be administered under the guidance of a doctor so as not to aggravate the condition due to improper use of medication.