Today, burn injury is second most frequent diagnosis in all children hospitalized with injuries. The main cause of death in cases of extensive deep burns is burn infection that occurs in 23 to 82 % of all burn units’ patients. Antibacterial treatment rationality is of great importance in fighting the generalized infections. This paper is aimed at scrutinizing the incidence and course characteristics of the antibiotic-associated diarrhea (AAD) in burn patients, as well as the possibility of its prevention in children receiving antibacterial treatment in the Regional Burn Unit of Zaporizhzhia. During 2012–2015, we have observed 438 children with burn injuries, who received antibio­tics. We observed children receiving antibiotics and examined over hospitalization time by detection of the highly specific for antibiotic-associated diarrhea A + B Clostridium difficile toxins in stool, which allowed diagnosing the enterocolitis due to Clostridium difficile associated with antibiotics administration (A4.07, ICD‑10). AAD prevention methods have been developed, among which preventive (from the first hours of hospitalization) administration of oral probiotic agent containing Lactobacillus acidophilus R0052 and Lactobacillus rhamnosus R0011 probiotic strains as a part of the Lacidofil® preparation dosed by age should be considered a major one. Prophylactic prescription of probiotic strains with antitoxic action against Clostridium difficile had reduced the incidence of antibiotic-associated diarrhea in children and the severity of its symptoms by 3.4 times.