The main means of aesthetic development in the library is a children's illustrated book - a synthesis of literary texts and illustrations. Artistic children’s illustrations are the most important element of a book, which largely determines its artistic value, the nature of its emotional impact, and its possible use in the process of aesthetic education of readers. Book illustration helps the child in understanding the world, mastering moral values, aesthetic ideals, deepens the perception of a literary work. The illustration begins the process of a child choosing a book to read or not to read. What do you think?