Whether an enlarged heart shape is serious or not is related to the severity of the enlargement. Enlargement of the heart can be seen in a variety of diseases, such as hypertension, coronary heart disease, rheumatic heart disease and so on. Early enlargement of the heart will show compensatory changes, with an increase in myocardial contractility, which will not have a serious impact on cardiac function, and the heart will not further enlarge significantly if the causative factors are actively removed. In some patients, the causes of heart enlargement may persist, such as poor blood pressure control, continuous progression of heart valve disease, and severe insufficient blood supply to the heart muscle. Enlargement of the heart to a certain extent will lead to a decrease in myocardial contractility, cardiac insufficiency, and even acute heart failure, which will significantly increase the severity of the condition and may even lead to sudden death. Patients with enlarged hearts should pay attention to finding the cause, controlling the primary disease, and actively removing the triggers to avoid further enlargement of the heart.