Picture books are educational media that have the funct ions of books and play and provide elements such as chil dren's values, attitudes, thoughts, culture and knowledg e. In particular, the cover design of picture books is one of the designs that needs to be paid more attention to in connection with the visual stimulation and interest induc tion of infants. This study is a study on the importance of children's picture book cover design and aims to analy ze the visual characteristics of children's picture book co ver design, focusing on the visual elements of image typ e, expression method, and painting expression of book co ver. The scope of the study was determined as the imag e of an infant picture book ranked in the top 30 accordin g to the 2022 Kyobo Bookstore Bestseller Report. The re search method examined the knowledge of three types of book cover images and five pairs of graphic interpretatio n according to Heinrich Wölfflin's iconography theory, cl assified book covers into 'Cover Type' and 'Expression Method', and analyzed painting expression through Wölf flin's concept of graphic interpretation. As a result of the study, as for the image type of picture book cover, the type of "Content-oriented Cover Picture" belonged to all book covers, and book cover images designed by Illustra tion were the most frequently used as the expression me thod of the cover. According to Wölfflin's conclusion thr ough the theory of iconography interpretation, the 'Dime nsional' was far superior to the book cover, the 'Planar' was used twice as much, the expression of 'Multiple' wa s nearly twice as high, and the expression of 'Relative Clarity' was a little higher.