Down syndrome is the most common genetic disorder that occurs when excess chromosomes form in cells. The cause of the excess of chromosome 21 is not yet known, although scientists have been researching the answer for years. Down syndrome can occur in any person, regardless of parental health, lifestyle or economic situation. These people will lag behind in physical and mental development. People with Down syndrome have belowaverage intellectual functioning and difficulties in social adjustment. Since children with Down syndrome lag behind in most developmental functions, it is very important to intervene as early as possible and enable the child to develop their abilities, create experiences and improve socialization. If there is no parental support and the whole environment in which the child grows up, he will not be motivated to participate with an environment that allows him to develop and progress. In history, children with Down syndrome were most often ignored, their needs were not taken into account, they were not socialized, but separated from society. Changes occurred in the 20th century when children with Down syndrome began to be included in the education system. The attitudes of today's society are based on the counter that every man has equal rights and opportunities, that he is accepted and respected as a human being, regardless of individual differences. Regardless of the fact that the integration and acceptance of children with Down syndrome has progressed compared to the past, we cannot remain on it; it is necessary to constantly raise awareness of society and strive for new insights into the progress of children with Down syndrome. This would improve education models and make it easier for children to develop and progress. The aim of this final work is to examine the extent to which children with Down syndrome are involved in preschool education, the barriers they face during integration and the extent to which they are enabled to develop in preschool education.