TOF is a congenital cyanotic heart disease which has severe physiodynamic changes in the cardiovascular system. The anesthesiologist should be able to manage the anesthesia for open heart surgery, be aware of the operation procedure, and have knowledge and experience to cope with the unpredictable changes of the patient's condition during operation. One hundred open heart anesthesias have been performed in BNUH from July 1981 to August 1983, of which 17 cases of anesthesia for total correction of TOF were analyzed and the following results were obtained. 1) It was difficult to predict the prognosis for the patient after open heart anesthesia by the chest X-ray, echocardiogram or electrocardiogram. 2) Anesthesia were performed by the combination of halothane-N2O0morphine as the main anesthetic agents. 3) Postoperative complication were wound infection(4 cases, 14.3%), arrhythmia(3 cases, 10.7%), low cardiac output syndrome(3 cases, 10.7%) and cardiac arrest (3 cases, 10.7%). 4) In 7 cases of death, the causes of death were low cardiac output syndrome(3 cases, 43.9%), heart failure (2 cases, 28.5%), renal failure (1 case, 14.3%) and aneurysmal rupture (1case, 14.3%).