In a child, cystitis (non-specific microbial inflammation of the mucous membrane of the bladder) is considered to be a dangerous disease; the prolongation of the process is usually associated with a delayed diagnosis. The aim of this work was to analyze the health status of the child population of the Chernivtsi region, especially the dynamics of the prevalence and incidence of cystitis. The official statistical data have been studied (reports on the state of medical care for children in the Chernivtsi region and data from the Center of Medical Statistics of the Ministry of Healthcare from 2006 to 2017); information-analytical and statistical methods have been used for the purpose of this study. Attention should be drawn to the significantly high prevalence of cystitis among children aged 15–17 years, especially in the Chernivtsi region as during period I (8.7±0.6 vs. 4.3±0.3 in Ukraine) and II (11.7±1.0 and 5.7±0.4, respectively, per 1000 people). Moreover, over the years, the growth of indicators acquires intensity, while this process is more than twice as pronounced in Chernivtsi. Thus, the growth rate was 65.0% in 2006–2011 and 90.3% in 2012–2017 vs. 27.2% and 32.8% in Ukraine, respectively. The identified data indicate the need to provide specialized care to children with infectious and inflammatory diseases of the urinary system of the Chernivtsi region and the need to improve regional clinical routes of patients with infectious and inflammatory diseases of the urinary system.