Objective: To describe the characteristics and rates of child psychiatric hospitalizations in the Brazilian public health system, as well as their variation according to the country’s macro-regions. Methods: This was a descriptive study focusing on year 2017, having as main source the Brazilian Ministry of Health’s hospital information system. Child hospitalizations were considered to encompass those of individuals under 13 years of age whose main diagnosis was included in Chapter V of the International Classification of Diseases, 10th edition (ICD-10). Results: The most prevalent diagnostic group was F10-F19, with 24.1% (21.8-26.3), followed by groups F30-39, F80-F89, F90-F99, F20-F29, with no statistical difference among them. Hospitalizations occurred more frequently in non-psychiatric hospitals, with 93.1% (91.7-94.4); most hospitalizations lasted for up to one week – 75.5% (73.2-77.8). The national hospitalization rate was 4.3 (4.1-4.5)/100,000, showing variations according to macro-regions. The highest rate was found in the South macro-region and the lowest in the Northeast, with values of 10.9 (9.9-12.0)/100,000 and 1.9 (1.6-2.2)/100,000, respectively. Intermediate values were found in the other macro-regions. Conclusion: Some specificities of the characteristics of hospitalizations for psychiatric reasons in this age group could be attested, as well as important variations in their occurrence among the different macroregions of the country.