Percutaneous balloon valvulloplasty(PBV) was successfully performed in 8 mitral stenosis patients for recent 3months. Five paitents have aortic insufficiencies also and two patients have mitral regurgitations below gradeII/IV. All paitents showed sinus rhythm on EKG, and had no mitral valvular calcification on echocardiogaraphy andfluoroscopy. PBV resulted in an increase in mitral valve area from 1.22±0.22 to 2.57±0.86cm², a decrease in meanleft atrial pressure from 23.4±9.6 to 7.5±3.4mmHg and a decrease in mean mitral pressure gradient from 21.3±9.4to 6.8±3.1mmHg. There were nosignificant complications except 2 cases of newly appeared and mildly aggrevatedmitral regurgitaiton. We believe that PBV will become a treatment modality of choice replacing surgicalcommissurotomy or valve replacement in a group of mitral stenosis patients, because of its effectiveness andsafety.