The topic of the work is the children's perspectives of the picture books illustration. The paper presents the quality aspects of picture books, contemporary theoretical approaches and trends to picture books, and answers the question of how children "read "picture books and what they like in illustrations of the picture books. In the research part of the paper, we explore/examine what children prefer in illustrations and why. The research was conducted through a social game, a modified monopoly, with children at an average age of four and six years. In the research was used a qualitative and quantitative approach. In a sample of 37 children, the results showed that there was no statistically significant difference between the choice of kitschy and simple illustration in relation to age, but there is a statistically significant difference in the choice of the most preferred style of illustration and color in the background of the illustration. Children mostly express the expressionist style of illustration and prefer pink and blue colors in the background of the illustration. Furthermore, statistically significant results show that children prefer cheerful illustrations from terrible and mystical. They prefer digital formatting illustrations more than illustrations with children's drawings, and more love of textile illustrations than sculpted illustrations. From the transcript, the coding method provided the children's explanations of preference for a particular illustration. The most common child's reason to prefer an illustration are children's familiar characters, objects, and colors (colorfulness) of illustrations. Apart from the results of the research, it highlights the benefits of a common qualitative and quantitative approach, the importance of exploring a child's perspective and research with children, not on the children.