The main signs of right heart failure are lower limb edema, enlarged liver with positive pressure pain, enlarged right ventricle, positive hepatic jugular venous reflux sign, etc. Heart failure is the final outcome of all heart diseases, and coronary artery disease and hypertension are the most common causes. According to the disease progression, left heart failure appears first, and when the disease is not controlled right heart failure appears, the main symptoms are loss of appetite, abdominal distension, dyspnea, and finally progress to total heart failure, and simple right heart failure is rare. When the heart disease appears dyspnea and worsens after fatigue, we should pay considerable attention to prevent the development of total heart failure. The diagnosis of right heart failure should be combined with medical history, ancillary tests, symptoms and signs, especially BNP test can be used as a basis for diagnosis. For example, if a patient with heart disease feels dyspnea and shortness of breath with light physical activity, it means that the heart function is declining, and timely consultation is needed to prevent further deterioration of the condition.