By considering the symptoms and complications caused by the two diseases of rheumatic heart disease mitral valve severe stenosis and mild closure insufficiency, mitral valve severe stenosis is more serious. 1. Rheumatic heart disease mitral valve severe stenosis: when the mitral valve orifice area is less than 1.0 per square centimeter, mitral valve stenosis can be diagnosed as severe, this time the patient can cough, hemoptysis, foamy sputum, dyspnea and other symptoms, and lead to atrial fibrillation, acute pulmonary edema, heart failure and other complications, the serious cases can be life-threatening. 2. Rheumatic heart disease mitral valve mild closure insufficiency: patients can manifest panic, shortness of breath, chest tightness, cyanosis, edema and other symptoms, the treatment can choose medication, common drugs are hydrochlorothiazide, warfarin, etc., the specific use of medication need to be carried out under the guidance of a physician, you can also choose surgical treatment, such as mitral valve repair and mitral valve replacement, the cure rate is high. Therefore, the comparison of the two diseases or rheumatic heart disease mitral stenosis is more serious, no matter which disease in life, symptoms need to be timely to the hospital, as soon as possible to avoid delays in the condition.