Loud heartbeat may be physiological and pathological, such as hypertensive heart disease, rheumatic heart disease, valvular insufficiency and other diseases. 1. Physiological: Under normal circumstances, after exercise, emotional excitement, drinking alcohol, drinking strong tea, etc., there will be an increase in heartbeat, loud heartbeat, which is a normal phenomenon, after eliminating the factors will return to normal. 2. Pathologic: (1) Hypertensive heart disease: changes in the structure and function of the heart caused by long-term high blood pressure that cannot be effectively controlled. In this case, the contraction force of the heart muscle will be increased to maintain sufficient blood flow, which will lead to increased heart beat and loud heartbeat. (2) Rheumatic heart disease: due to rheumatic fever activity, heart valve lesions, resulting in valve stenosis, resulting in increased resistance to blood flow, in order to maintain a normal blood supply to the heart and other tissues of the body, myocardial contractility will be increased, which will result in a loud heartbeat. (3) Valve Closure Insufficiency: Includes mitral valve and tricuspid valve. Valve closure insufficiency, will cause blood reflux, in order to the sufficient amount of ejection of blood, there will be a heart beat enhancement, self-conscious heartbeat sound. There are many other causes of loud heartbeat, it is recommended to clarify the cause of the disease under the guidance of a doctor, to avoid blindly using medication on their own.