Theme of this work is a picture book. The picture book is the first book in a child's life, the transition from situational context to context of symbols. Its purpose is to help children discover the world and the medium of the written word. Develops cognitive world of a child, causing emotions, develop speech, rich vocabulary and meet the need for new. With this work, through the two main parts, it sought to examine these attitudes. The first part begins by describing the picture book as a literary type. It explains which part it takes place in childhood of a child, what is its significance in the development of the child and which are the interests behind her, often undervalued name. In the second part of the work presents the thesis of work, and that is applying and concretization on the example of the picture book "I'm not afraid of the dark", author by Ljubica Kolarić-Dumić. The author is fear of the dark turned into friendship and just created an entirely different, humorous and joyful work in the world of children's literature. This work was written in order to display the picture book as a valuable treasure of childhood that must not be underestimated especially because it comes to the main genres in children's literature, which has many functions in child development.