Moscow is a city of federal significance with a high population of children and, accordingly, a large number of primary patients detected annually. The objective of the study is to analyze the main indicators characterizing the medical care for children with cancer in Moscow and the Moscow Region. Materials and methods. There were analyzed the operational reports of the Moscow Department of Health and the Ministry of Health of the Moscow Region for 2013–2017. The results. In 2013–2017 there were identified 18,090 primary patients in the Russian Federation, among them 1807 (10%) in the analyzed locations: 1315 (7.3%) in Moscow, 492 (2.7%) in Moscow Region. For 5 years the number of primary patients in Moscow increased by 18.1%, and in the Moscow region it decreased by 2.3%. The morbidity of the children aged 0–17 years in Moscow increased by 5.3%, while in the Moscow Region the morbidity decreased by 20%. The mortality rate in 2016–2017 in Moscow decreased by 37.5%, while in the Moscow region – by 50%. There were no actively identified patients in Moscow in 2016–2017, and in the Moscow region their percentage decreased from 34.2 to 7.3. The conclusion. The incidence of malignant neoplasms of the child population in Moscow and the region is slightly lower than the average for the Russian Federation. At the same time, the levels of morbidity and mortality in Moscow and the Moscow region differ significantly. This indicates obvious defects in diagnostics and accounting, which is confirmed by the discrepancy between these operational reports and the Federal State Statistics Service. District pediatricians demonstrated low oncological alertness.