Results: Specimens of 61 neonates of pulmonary hypertension were diagnosed by color doppler echocardiography showed that: the rate of pulmonary hypertension associated with congenital heart disseases (PHCD) was 36%, and pulmonary hypertension non-associated with congenital heart disseases (PHOCD) was 64%. The causes of congenital heart disseases were VSD, ASD.