A large heart may cause myocardial ischemia, heart failure, etc., which requires timely medical treatment for reasonable and standardized diagnosis and treatment. A large heart may be a manifestation of myocardial hypertrophy, which is caused by an increase in the size of cardiomyocytes. When the volume of cardiomyocytes increases, the heart does more work and needs more oxygen and blood supply, but the growth of blood vessels and nerves inside the cardiomyocytes cannot catch up with the increase of cardiomyocytes, therefore, once the strenuous activities, it will cause myocardial ischemia, such as angina pectoris and increased heart rate. In this case, prompt medical attention is required. A large heart may also be a manifestation of ventricular enlargement and myocardial thinning, which is often an advanced manifestation of cardiac insufficiency, i.e., heart failure, which often manifests itself as exertional dyspnea, and the heart sound appears to be gallop rhythm. If you find that your heart is enlarged, you need to consult a doctor in time and follow the doctor’s instructions.