This study is aimed to know the effects of damaged children by group bullying on better behaviour through art therapy, to understand the basic cause of group bullying and nuclear feeling of the children damaged by group bullying, and to treat tbe fear, anxiety and psychological trauma of the damaged children spontaneously by communication and by forcing them to make art prorlucts in themselves. The subject of this study is a daughter 7 years old who was attending at the S kíndergarten located in Taegu and was referred together with her mother for the adjust problem to that kindergten by the kindergarten’s chief. The maìn appealing problem in her was the greatest reluctancy to go to that kindergarten caused by group bullying of the same age for past 6 months since last auturnn and an awful headache occuπed whenever going there. This study was perfonned with total 16 session of 28 Feb 2001 to 8 Sep 2001 at a room for individual therapy of the W Welfare Institute, and each therapy was for 50 min and on an average once per 2 weeks in a concurrent separate treatment with her mother. This child was try to take a pretest and posttest, Social Experience Questionnaire(SEQ), K-H-T-P Test, and KFD Test ln final, this art therapy made us find out the main cause of group bullying to that child caused by the childnen. Moreover, this therapy encourage her to express a conflict with her mother, and a complaint and a hostility to her mother. And she was induced to face the situation of that group bullying through a play role by using dolls, and to leam a self role, a self assertion and the methods to cope with various circumstances given in advance. Especially, drawing changed her to express a positive self and to enhance a self expression from a negative feeling repressed by her parents, friends and teachers. As a result, it is sure she looked brighter and more cheerful, and was going much better than ago, by observing her behavior and the rneaning of her drawing It could be concluded through this art therapy for a damaged child that the main cause of the child’s nuclear feeling should originate with her mother. Therefore, continuous mother counseling would be necessary to solve the problem of this child fundamentally