Dietary fiber is an essential part of good nutrition and health for both adults and children. Human breast milk is rich in a variety of oligosaccharides; however, bottle-fed infants may experience a deficiency due to the fact that most conventional infant and follow-on milk formulas do not contain prebiotics. In other milk formulas, despite the large amount of safe and approved dietary fiber, only three types of oligosaccharides are used for fortification: fructooligosaccharides, galactooligosaccharides and inulin. Polydextrose is a prebiotic and has multifunctional properties. Therefore, the purpose of this study is to determine the prospects for the use of dietary fiber polydextrose in the composition of food products for young children. The article provides an overview of existing studies on the use of polydextrose as a prebiotic for children from birth to 4 years old. It is determined that polydextrose is a promising and safe ingredient for enriching children's products with dietary fiber, it is tolerated similarly to oligosaccharides already used in baby food,