Aim of the research was to study the dynamics of proinflammatory mediators in children with various forms of purulent-septic diseases. Methods. A study was carried out for 328 children with pyo-septic soft tissue diseases aged 1 to 16 years old for the period from 2010 to 2017. ELISA method was used for detection of the IL-1β, interleukin-6 IL-6, interleukin-8 IL-8 in serum using the test system (eBioscience, Austria). Results and discussions. Evaluation of cytokine levels in the blood serum of patients with various types of purulent-inflammatory processes showed high numbers of interleukins IL-1, IL-6, IL-8. Mean level IL-1 was 1,4 (0,16:1,8) pg/ml in group of abscess, 5,8 (0,8 7,64) pg/ml group of phlegmon, 1,9 (0,2:2,7) pg/ml in group of purulent wound. Mean level IL-6 was 2,1 (0,3:2,6) pg/ml in group of abscess, 4,7 (1,1:5,8) pg/ml group of phlegmon, 2,2 (0,3:4,3) pg/ml in group of purulent wound. Mean level IL-8 was 1,2 (0,14:1,6) pg/ml in group of abscess, 4,3 (0,9:6,3) pg/ml group of phlegmon, 3,2 (0,4:4,9) pg/ml in group of purulent wound. Analys showed that the level of proinflammatory mediators is indicative of the severity of the inflammatory process and the possibility of using IL-1, IL-6 IL-8 to assess the effectiveness of treatment and the dynamics of the wound process. Conclusions. Hyper secretion of proinflammatory mediators in children with purulent-inflammatory diseases of soft tissues is associated with imbalance in the system of cytokine regulation. Levels of markers of inflammation corresponded to specific features of the severity of the inflammatory process. Dynamics of indices of proinflammatory mediators can be used to assess the course of the wound process and the effectiveness of treatment.