Mitral valve prolapse is a serious risk to the human body, and when it progresses to heart failure may lead to death. The mitral valve is a valve in the human heart, between the left atrium and the left ventricle, the valve is equivalent to the door of the room, the door is manipulated and gripped by the hinges to facilitate its activities, if the hinges are broken or incompletely broken, then the door can not be closed, or even the door can not open and close the door normally. If mitral valve prolapse occurs, the heart is unable to exercise its valve function normally, so repeated chest tightness, panic, shortness of breath will gradually occur, and ultimately, when checking the cardiac ultrasound, it is found that the heart’s systolic and diastolic functions have decreased, and there is enlargement of the heart as well as a decrease in the ejection fraction, which is also commonly referred to as heart failure in clinical practice. The mortality rate of heart failure patients increases significantly as the degree of heart failure worsens. Mitral valve prolapse does not cause death at first, but with untreated mitral valve prolapse, it gradually leads to a decline in cardiac function, and when cardiac function declines to a certain extent, such as reaching class III or IV heart failure, the survival rate and life expectancy of the patient will be greatly reduced, with the most serious patients having a life expectancy of no more than five years.