Firty-four patients with clinically suspected mitral stenosis were studied by selective left ventricularcineangiograhy. The essential features of mitral value stenosis appearing at left ventricular cineangiography arewell established, such as 1. Domed appearance ofmitral value; 100% 2. Subvalvular filling defects or distortion;75.9% 3. Negative jet flow; 72.2% 4. Posteriobasal bulge or hypokinesia; 57.4% 5. Valvular defomity; 55.6%Characteristic doming of mitral value in diastole with additional findis are diagnostic of mitral stenosis.