Background: The variety of tumors of the Central Nervous System (CNS) during childhood is related to heterogenous clinical manifestations and to an important mortality rate (MR). In Brazil, CNS tumors represent the second most incident cancer during childhood and the main cause of death of children between ages 0-9. Objectives: To describe the number of hospitalizations and the MR of CNS neoplasms by childhood age group in Brazil. Design and Methods: This is a descriptive ecological study based on secondary data, obtained from DATASUS. Data were collected regarding the number of hospitalizations and MR by childhood age group due to neoplasm of the CNS in Brazil between the years 2009-2019. Results: A total of 38192 hospitalizations happened, resulting in 5.91% of MR. The highest value of brain’s neoplasms MR was found in children up to 1 year old (9,34%), but when it comes to number of hospitalizations, the group between ages 5-9 had the highest number, both in neoplasms of the brain (9364) and of other parts of the CNS (1767). Conclusions: The present study pointed out that the childhood age group with the lowest number of hospitalizations (less than 1 year) presented simultaneously the highest MR of CNS tumors.