The damage of hypertension on the heart mainly includes the following aspects: 1, due to prolonged hypertension or poor blood pressure control, resulting in heart enlargement and reduced contractility of the heart, resulting in heart failure. 2, due to prolonged hypertension causes excessive pressure load on the heart, increased myocardial oxygen consumption, and hypertension causes coronary atherosclerosis, reduced blood supply to the coronary arteries, causing angina pectoris or further leading to 3. Prolonged hypertension can cause hypertrophy and strain on the myocardium of the ventricles or atria, and unstable electrical activity of the heart, resulting in arrhythmias, such as premature atrial beats, premature ventricular beats, atrial fibrillation, and even cardiac arrest.