The tricuspid valve is a movable valve located between the right atrium and the right ventricle that opens and closes with the contraction and diastole of the heart. Normally, the tricuspid valve should close completely during heart contraction, but some physiological or pathological factors may cause the valve to fail to close completely. As a result, a small amount of blood flow from the right and left ventricles regurgitates into the right atrium during cardiac contraction, called tricuspid regurgitation. If the regurgitation is not severe and the amount of regurgitation is small, it is called a small amount of regurgitation. Usually, a small amount of tricuspid regurgitation does not have an excessive impact on the hemodynamics of the body and most patients have no clinical symptoms. In this case, the cause of tricuspid regurgitation should be actively investigated, and the regurgitation should be monitored by periodic ultrasound. If there is no discomfort and the regurgitant flow is small and slow, it is usually considered a normal physiological phenomenon. Many people will develop tricuspid regurgitation as they age, possibly due to degenerative heart valve degeneration. If this is the case, simply follow up and observe, and try to choose a light diet and avoid strenuous exercise in general. If there is a definite cause of tricuspid regurgitation, it needs to be treated for the underlying cause, otherwise this tricuspid regurgitation may progress to moderate to severe regurgitation, which will have hemodynamic effects on the body and may require further surgical treatment. Common clinical causes that can induce tricuspid regurgitation include diseases of the cardiac system, such as coronary artery disease, hypertension, myocarditis, and heart valve disease. In addition, there are a number of primary pulmonary diseases, such as interstitial lung disease, chronic obstructive pulmonary disease, and bronchial asthma, which may be acute tricuspid regurgitation in a minority of patients, such as pulmonary embolism.