Heart failure is one of the most common complications of various organic heart diseases. It occurs when the heart's contractile force or diastolic function is impaired, preventing blood from being delivered to vital organs and throughout the body, leading to clinical symptoms caused by venous congestion and arterial ischemia, called heart failure. Diseases that can cause heart failure include coronary heart disease, pulmonary heart disease, rheumatic heart disease, hypertensive heart disease, and viral myocarditis. Patients with heart failure need to use effective medications to treat the diseases causing heart failure while minimizing the burden on the heart. They should adhere to a low-fat and low-salt diet, ensure sufficient rest, maintain regular bowel movements to prevent the acceleration of heart failure. (Specific medications should be administered under the guidance of a physician.)