The purpose of this study is to find out how the group music therapy using visual media will influence self-esteem and self-expression improvement of the low-income children. To conduct a study, following research problems are set up First, do the group music therapy using visual media influence the self-expression improvement of the low-income children Second, do the group music therapy using visual media influence the self-esteem improvement of he low-income children. Six children for experimental group are selected as the object of this study that is 3 grade students of elementary school, ten years old, at the Social Welfare Center. This study was conducted once a week for each 40 minutes , total 10 times, from July 5th, 2012 to September 6th, 2012 and performed the self-eseteem and self-expression scale before and after the program. and the results were analysed in PASW20.0 statistics program The self-eseteem scale that Self-Esteem Inventory(CSEI) by Coopersmith(1967) is standardized Korean edition by 강종구(1986) and the self-expression scale that is written by 변창진 and 김성희(1980) considering the our cultural background based on self-expression scale by Rokos and Schroeder(1980) were used as the research tools of this study Paired sample T-test of PASW20.0 statistics program was used to analyse the results. First, the average self-esteem points of posttest about the group music therapy using visual media are higher 19 points than the average points of pretest about that. The result of the experiment was shown statistically significant and prove the effect of therapy Second, the average self-expression points of posttest about the group music therapy using visual media are higher 7 points than the average points of pretest about that. The results of the experiments was shown statistically significant and prove the effect of therapy The group music therapy using visual media influence self-esteem and self-expression improvement of the low-income children and this study has a significance that results have the positive effects to low-income children for even a short period of the time