The severity of tricuspid regurgitation is generally determined by calculating the area of the regurgitant valve orifice through color ultrasonography. If the effective regurgitant area is greater than 40 square millimeters, the regurgitation is usually severe and clinically needs to be treated by surgery. There are many causes of tricuspid regurgitation, such as rheumatic heart disease, congenital heart disease or coronary artery disease, or relative enlargement of the ventricular cavity due to pulmonary hypertension, all of which can cause tricuspid regurgitation. If acute heart failure occurs, it can be relieved by cardiac diuretic and vasodilator therapy. For moderate to severe tricuspid regurgitation, surgery is clinically necessary to cure it, while mild regurgitation can be observed and followed up, and attention is paid to prevent aggravating factors of heart failure.