Mild mitral regurgitation does not affect life expectancy and does not affect life expectancy. In the case of moderate mitral regurgitation, the patient’s life expectancy is not affected by surgical treatment to resolve mitral regurgitation, and if the patient has surgery and takes good care of himself, his life expectancy should be 70-80 years old, and sometimes even 90 years old, as long as the heart function returns to normal. For patients who have not undergone surgery, if their heart function is not affected, their life expectancy is also not affected. If the heart function is in class I or II, it can be controlled by medication without surgery and can maintain a normal life without any effect on the patient’s life expectancy.