This study is to examine whether and how much group art therapy can help the orphans in an asylum develop their self-esteem. The subjects of this study are four infants living in asylum S located in metropolitan area D. This group art therapy was designed totally 16 times for 1～2 hours per time from the 25th of October, 2005 through the 27th of December, 2005. To evaluate the difference of participants' self-esteem by before and after group art therapy, the Self-Esteem Scale (SES) was used to measure the self-esteem of those participants and Kinetic-House, Tree, Person(K-HTP) was also used to evaluate for their pictures. The data was analyzed by SPSSWIN Version 12.0 and then it was evaluated Wilcoxon Ranks Sum. The change of before and after of K-HTP was stated to find the effect of group art therapy about psychological changes which can't be found on a statistical chart of self-esteem. The results were followings. First, by analyzing the difference between the former and the latter group art therapy, the latter self-esteem of Infants in the orphan Asylum measured with Self-Esteem Scale(SES) more increased 6.25points on an average score than the fomer Group Art Therapy (Z=-1.841, p<.10). As the result by the latter group art therapy the subjects' self-esteem were significantly improved. Second, as a result of before and after of K-HTP, on the before pictures, most of the group members showed low self-esteem by drawing unstable angle , placement, risky houses and trees which indicate they intend to be dependent and prudent. On the after pictures, they draw pictures properly on all over the whole canvaes and improvements of their self esteem were proved by stable houses and bigger stem and water pipe of the trees. Therefore, the effect of Group Art Therapy has an effect on improvement of self esteem for orphan children.