Mild tricuspid regurgitation is asymptomatic and generally does not require treatment. The cause of mild tricuspid regurgitation is seen in tricuspid valve insufficiency. The common cause of tricuspid valve insufficiency is degenerative changes. As the tricuspid valve grows older, degenerative changes occur and the tricuspid valve has varying degrees of poor closure, a little bit of poor closure and mild tricuspid regurgitation, a small amount of regurgitation does not cause right heart enlargement and is not accompanied by symptoms and does not require intervention. If tricuspid regurgitation increases further and symptoms of right heart insufficiency appear, such as ascites and lower limb edema, tricuspid valve replacement is recommended to avoid pulmonary hypertension due to massive tricuspid regurgitation, which can lead to serious heart disease.