The purpose of this study is to check if a group art therapy can help reduce withdrawal behavior of abused children. Study subjects are two girls separated from their parents because of parental abuse, living in facilities for more than one year, and showing withdrawal behavior. They received a total 30 session of art therapy program, three sessions a week for 12 weeks. K-CBCL(Korean Child Behavior Check-List) is adopted to investigate the degree of their withdrawal by pre-, post- and follow-up test of K-CBCL, in the way that the degree of withdrawal is measured in T score, compared, and analyzed in accordance with observational list on how withdrawal is reduced as sessions go by. Main results from the study are as follows. First, individual measurement scores for pre-test, post-test and follow-up test with regard to children\'s withdrawn behavior are as follows. Rella\'s scores are 97T, 65T, 65T. Piano\'s scores are 98T, 79T, 79T. Second, as the sessions go by, the scores according to the observational list have decreased to indicate that a positive change emerges on withdrawal. Third, as the sessions go by, abused children accelerate self-expression, presentation skills and self-confidence while speak frankly about themselves rather than accusing others. They also increase understanding and sympathy toward each other and become a cohesive group for their own atmosphere. Key Words : Group Art Therapy, Abused Children, Withdrawn Behavior.