One hundred and fourteen patients were underwent cardiovascular operation from the 11th June 1985 to 12th July 1988 in the department of cardiovascular surgery of Seoul District Hospital. There were one hundred and one open heart surgery patients and thirteen non-open heart surgery patients. Of open heart surgery cases, seventy-four were acyanotic, twenty four were cyanotic congenital heart disease and three were acquired valvular heart disease. VSD was most common[55 cases] among acyanotic group and TOF[21 cases] was most common among cyanotic group. Of non-open heart patients, there were eleven cases of PDA and two cases of shunt[modified Blalock-Taussig shunt using PTFE graft] for TOF. There were one operative death[0.9%] due to inadequate relief of right ventricular outflow tract obstruction and peripheral pulmonary artery stenosis for TOF patient. No Patients were dead during follow-up.