Most cases of moderate mitral regurgitation do not require surgery, but if they are combined with severe symptoms, they can be treated with surgery under the supervision of a doctor. For simple moderate mitral regurgitation, surgery is not recommended and regular checkups can be performed under the supervision of a doctor. If serious symptoms such as chest tightness, shortness of breath, or even panic attacks occur, the condition is considered to be aggravated and should be treated surgically under the guidance of a doctor. Moderate mitral regurgitation also requires observation of heart size and function, i.e., checking the contractile function of the left ventricle and whether the left ventricle is dilated. It is also important to look for the presence of atrial fibrillation, or other cardiac arrhythmias. If moderate mitral regurgitation is accompanied by other diseases, such as coronary artery disease, bypass surgery is required under the supervision of a doctor. During the surgery, the condition of moderate mitral regurgitation will be investigated, such as leaflet development, subvalvular structure and other aspects of the problem, before deciding whether or not to repair or replace the valve. If there is any discomfort, it is recommended to go to the hospital for timely treatment.