Nowadays some children often lose their things, become easily distracted to extemal stimulation, do not seem to listen others, dislike study or activity which needs mental efforts, or do not concentrate on daily life. The C- T - S-C Personality Inventory is classified into eight phases by children’s age or grade to diagnose the possibility of disabilities early and provide practical materials. This inventory analyzed six personality through the outlines of circle, triangle, square, and clover: coward, careful, composed, careless, distracted, and hyperactive children. Also, children' s ability to understand and create lines, shapes, and space is comprehensively diagnosed based on the six personality. The C-T- S-C Personality Inventory has the advantages of easy application of basic outlines drawn by children to daily life, simplicity of a small number of forms, and easy scoring. Specifically, as this inventorγ is distinctive from other types of personality tests, it will contribute to the development of art education and art therapy for children in Korea and reinforce acadernic identity extensively.