Early detection of fetal malformations has become possible owing to the availability of highly advanced ultrasound systems. Majority of malformations, 30 per cent, has been recordable from urinary system. This system is early of access for the examiner, so that even sophisticated diagnosis of malformation is possible. High accuracy diagnosis has been increasingly helpful in forecasting pregnancy prognosis. Hence, with adequate perinatological management, it will be possible to influence on perinatal morbidity and mortality positively. 70 fetuses with malformations of kidneys and to urinary system have been observed in the context of this study. An assessment was made of diagnostic efficiency, postpartum development and long-range prognosis. Recommendations are derived from the above mentioned findings for perinatological approach in cases of diagnosed malformations of kidneys and the other urinary system.