In the presented study, the authors raise the question of the need to include in the educational process of a preschool institution to familiarize children with some philosophical categories. The educational system in which the child is included, starting from preschool childhood, provides him with the opportunity to gradually and continuously enter the knowledge of the world around him. It is in preschool childhood that the child is exposed to various relationships, values of culture and health, diverse patterns in the field of different knowledge. This contributes to a broader interaction of the preschooler with the world around him, which, in turn, ensures the assimilation not of disparate ideas about objects and phenomena, but their natural integration and interpenetration, which means understanding the integrity of the picture of the world. The authors prove the idea that the assimilation of philosophical categories by children contributes to the understanding of the structure of the surrounding world. The analysis of research is presented, proving that children's fiction in an understandable and accessible language, life examples and vivid images is able to explain to children the laws of the functioning of nature and society, as well as to reveal the world of human relations and feelings. Fiction surrounds the child from the first years of his life. It is she who contributes to the development of thinking and imagination, enriches the sensory world, provides role models and teaches you to find a way out in different situations. Philosophical categories such as "love and friendship", "beautiful and ugly", "good and evil" are represented in children's literature very widely, and the efficiency of mastering philosophical categories depends on the skill of an adult in conveying the content of a work, on correctly placed accents.