Objective: The study objective is to analyze the efficacy of antibacterial medication selection to treat community-acquired pneumonia (CAP) in children in an out-patient clinic and in a pulmonology department of an in-patient hospital.Methods: Retrospective descriptive study for 2009–2017 in day-patient departments of pediatric clinics and pediatric pulmonology departments of in-patient hospitals of Primorskiy territory (760 cases).Results: 50 % of children took antibiotics at pre-hospital stage (self-treatment). Penicillins were the most popular – 50.1 % (218 prescriptions), cephalosporins were used in 129 (29.7 %), macrolides – in 86 (18.8 %) of cases. The average duration of antibacterial treatment course of CAP was 10 days at pre-hospital stage. Both in the out-patient clinic and in the in-patient hospital, cephalosporins (58.4 and 58.3 %), macrolides (34.8 and 37.4 %) and aminoglycosides (6.3 and 3.4 %) were used more often.Conclusions: The positive dynamics in the protocols of antibiotic therapy of CAP should be noted. The improvement of regulatory framework has led to the increase of rational prescriptions. It is necessary to continue improving of clinical guidelines and implementing pulmonology hospitals of microbiological monitoring that will allow improving the quality of antibacterial treatment.