Minimal mitral regurgitation means that when the left ventricle contracts, the mitral valve does not close completely, allowing a small amount of blood flow from the left atrium into the left ventricle to flow back into the left atrium. The mitral valve is a valve that sits between the left atrium and the left ventricle to ensure that blood flows from the left atrium into the left ventricle in one direction. When the left ventricle contracts, blood should be supplied to the whole body from the aorta. If the mitral valve is structurally or functionally abnormal, and the mitral valve does not close completely when the left ventricle contracts, a small amount of blood flow from the left ventricle will return to the left atrium. A small amount of mitral regurgitation is common in the elderly with degenerative heart valve function, rheumatic heart valve disease, cardiomyopathy, etc. If the patient does not have obvious symptoms, the patient may have a small amount of regurgitation. If the patient has no obvious symptoms, it can be followed up and observed. If the patient has palpitations, fatigue, postural dizziness and other discomforts, the patient should actively treat the primary disease, and can be given medication to reduce the burden on the heart as prescribed by the doctor, and if necessary, surgery is needed to restore the normal structure and function of the mitral valve. Patients with a small amount of mitral regurgitation should pay attention to ensure adequate sleep, avoid high-intensity exercise, eat more fresh fruits and vegetables, low-salt and low-fat diet, quit smoking and drinking, and control blood pressure and blood sugar.