Left atrial enlargement with a small amount of tricuspid regurgitation may be normal physiological, tricuspid valve closure insufficiency, pulmonary heart disease and other pathologic factors caused by the general need for surgical treatment. 1. Physiological factors: left atrial enlargement, a small amount of tricuspid valve regurgitation may be a normal person’s test results, is normal, does not need treatment. 2. Pathologic factors: (1) Tricuspid valve closure insufficiency: right ventricular hypertrophy or enlargement, causing left atrial enlargement and tricuspid valve closure insufficiency occurring in a small amount of regurgitation. It can be treated surgically, such as tricuspid valve repair and tricuspid valve replacement. (2) Pulmonary heart disease: increased afterload on the right side of the heart, causing enlargement of the left atrium and relative tricuspid valve insufficiency, resulting in a small amount of tricuspid regurgitation. Surgical treatment is available, such as thrombectomy and placement of an inferior vena cava filter. Left atrial enlargement tricuspid valve small amount of regurgitation may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.