A method and apparatus for analyzing pattern colorings and evaluating various psychological symptoms or disorders in art therapy are disclosed. The method suggests performance-related elements such as completeness, accuracy and degree of concentration as elements, can objectively and quantitatively rate these elements as well as various color-related elements, can detect the changes of these elements in pattern colorings, can estimate the levels and changes of psychological symptoms and disorders and determine whether the symptoms and disorders are serious or not, can acquire various kinds of knowledge in the field of art therapy and establish a knowledge base, and can interpret the pattern colorings based on the analysis and knowledge base. The apparatus consists of units obtaining inputs of characteristics of clients, analyzing and rating the various elements in the pattern colorings, and outputting various kinds of information to the clients, parents, teachers, and art therapists.