Early symptoms of hypercardia are atypical and can be asymptomatic or have mild headache, chest tightness and other symptoms of hypertension. As the disease progresses, it manifests as panic, chest tightness, shortness of breath, exertional dyspnea, inability to lie down, coughing and chest tightness when lying down, which improves when sitting up, and in severe cases, acute left heart failure such as sitting down breathing and coughing pink foamy sputum. If the left heart failure is not corrected continuously, it can manifest as total heart failure, with symptoms such as jugular vein anger, hepatomegaly, edema of both lower limbs, and fluid accumulation in the chest and abdomen. Hypercardia is a structural and functional alteration of the heart caused by long-term poor control of hypertension, mainly including hypotension of the left ventricle and hypertrophy of the left ventricle. In the late stage, the contractility of the heart muscle will be weakened and develop into heart failure. Hypercardia can also manifest as arrhythmia and atrial fibrillation. In addition, hypercardia can easily be combined with coronary artery disease.