The purpose of this study was to investigate the effect of music activity on the reduction of depressive symptoms in children. The subjects of this study were twenty 5th grade elementary school children in the Kyonggi Province. They were selected from those who had high scores on the Children\'s Depression Inventory(CDI). They were separated into an experimental and a control group, ten children in each group. The experimental group was given 12 sessions(three times each week and for forty minutes) of music activity while the control group had no treatment. The CDI scores for each child were compared before and after the experiments. Statistical methods used for data analysis were the mean, standard deviation, and ANCOVA. The results indicated that the children in the experimental group, compared with those in the control group, displayed significant reductions in the scores of self-blaming, in depressive moods, in offensive behaviors, and in their total CDI scores(p<.05). ‘Depressive mood’ findings changed significantly at the level of p<.01 in comparison with the pretest results. The findings of this study showed that music activity had a significant effect on the reduction of depressive symptoms in those children.