Comparison of the official and research data on congenital developmental defects frequency (CDDF) in children of Novomoskovsk showed their disagreement. The average CDDF in these children is not more than the Middle European level. Physical development of children is insufficient for their biological age in 25% of cases. Many children suffer from respiratory diseases because of ambient air pollution. The majority of children (88-93%) are referred to 2-4 th health groups according to WHO classification.