A picture book is a child's first reading didactic material. It is important for the child's understanding of the world, but also for the development of reading skills. In order for the child to understand the message conveyed by the picture book, but also for him to love reading, the fun function is very important. A child should understand reading as a game. It is necessary to take into account the child's individual characteristics and his area of interest. Various topics are covered in picture books. Picture books with religious content are a special type. Although they are not so common, they are very important for the religious upbringing of a child. They deal with topics based on biblical stories, but also on the inspiring lives of saints. In recent years, there has been a growing trend of picture books with religious content. They talk about topics like death and suffering in a way children can understand. They try to instill in children a sense of tranquility and unconditional love. They help children create their own image of God without the influence of parents or educators. In this way, children themselves create their own relationship with God, which is reflected in their relationship with themselves and others. Some authors go "one step further" and bring children closer to topics that form the basis for a later understanding of Theology of the Body. In addition to the religious education program, there are religious kindergartens whose work is based on the child's overall development based on the Catholic faith. At the beginning of the thesis, the main characteristics of the picture book are explained along with a dialogic reading and a historical overview of the picture book in the world and in Croatia. Furthermore, some examples of picture books with religious and partially religious content are mentioned. It briefly describes the program of Catholic religious education for preschool children as well as the importance of imagery in promoting Christian doctrines. The influence of picture books with religious content for children of kindergarten age and its advantages and disadvantages is explained.