The causes of valvular regurgitation can be categorized into physiologic and pathologic ones. Physiologic causes are mostly seen in aging, valve sclerosis, etc., which can also lead to the appearance of valvular regurgitation. Pathologic causes include mitral valve prolapse, rheumatic heart disease and congenital heart disease. 1. Physiological factors: late night, overwork, etc. can occur, the mitral valve or simple mitral valve or tricuspid valve a small amount of regurgitation. Age-related degenerative valvular disease. That is, with age. The repeated switching of heart valves can lead to a decline in the function of the valves, which can also lead to valvular insufficiency, causing regurgitation. 2. Pathological factors: mitral valve prolapse, this is the most common cause of mitral regurgitation. High blood pressure, heart disease, coronary heart disease, rheumatic heart disease, cardiomyopathy, such as dilated cardiomyopathy and so on can cause mitral valve closure insufficiency, regurgitation. Tricuspid regurgitation is common in congenital heart disease, and chronic lung diseases such as pulmonary heart disease, causing increased pressure in the pulmonary artery and pulmonary artery insufficiency. Tricuspid regurgitation can also be caused by dilatation of the pulmonary arteries and lesions of the pulmonary arteries. The causes of tricuspid regurgitation are very complex, and it is necessary to improve the relevant examinations under the guidance of the doctor to clarify the specific causes.