Total anomalous pulmonary venous confluence(TAPC), a rare cyanotic congenital anomaly of the heart especially in adult, is now diagnosed by echocardiography instead of cardiac catheterization with high sensitivity and specificity. The key points are identification of pulmonary veins, pulmonary venous confluence draining anomalously to the heart. RVDVO on M-mode, abnormal echo free space posterior to left atrium on 2D-echo are basic characteristics of TAPVC. Peak velocity and flow profile measurement on the doppler provide additional informations : obstruction and anomalous vessels. A case of 23 year old male with supracardiac type TAPVC diagnosed by echocardiography was corrected successfully by surgery.