There are many different types of heart diseases and different medications for treatment, not necessarily three. Drugs should be prepared under the guidance of a doctor. Commonly used drugs include: diuretics, angiotensin-converting enzyme inhibitors, beta-blockers, anti-arrhythmic drugs and so on. 1. Diuretics: Diuretics can be divided into tabular diuretics such as furosemide, thiazide diuretics such as hydrochlorothiazide, and potassium-preserving diuretics such as spironolactone. Diuretics can promote urine production, reduce fluid load and heart burden, can be used for hypertension, heart failure, cardiomyopathy and other heart diseases. The drugs chosen for different conditions are not the same. 2. Angiotensin-converting enzyme inhibitors: they can inhibit the conversion of angiotensin into more active substances in the lungs, thereby dilating blood vessels and reducing blood pressure and controlling heart failure. In addition, these drugs can also improve ventricular remodeling, delay the progression of heart failure, protect kidney function, commonly used in chronic heart failure, hypertension, chronic kidney disease treatment. 3. β-blockers: β-blockers can inhibit the stimulating effect of sympathetic nerves on the heart, effectively reduce the burden on the heart, control the symptoms of heart failure, and improve the prognosis and mortality of heart failure patients. Commonly used drugs are metoprolol, bisoprolol and so on. 4. Antiarrhythmic drugs: including sodium channel blockers such as lidocaine, potassium channel blockers such as amiodarone, calcium channel blockers such as verapamil and so on. Different types of arrhythmia choose different drugs. There are many types of heart diseases, and there are strict indications and contraindications for the use of drugs, so it is recommended that patients go to the hospital as soon as possible, consult with a professional doctor to choose the drug according to their condition, and it is not recommended to take the drug on their own in order to avoid causing adverse consequences.