The purpose of this study was to investigate the effect of children's satisfaction with program service provided by Community Child Center on children's mental health. This study used raw data surveyed by Community Child Information Center and selected 525 chlidren who had been enrolled in Community Child Center more than 3 years. The raw data were collected self-administered questionnaire method. Correlation and multiple regression analysis were used for this study. The main results of this study were as follows: Satisfaction with program service perceived by children was negatively correlated with depression·anxiety and aggression. The more children satisfied with program by Community Child Center, the less children felt depression·anxiety and aggression. Satisfaction with program service in peer-relationship and child-participation were significant in explaining depression of children. And satisfaction with program service in peer-relationship and interpersonal relationship were important to explaining aggression of children. Only satisfaction with protection program was statistically significant in explaining self-esteem of children. Therefore it could be concluded that satisfaction with program by Community Child Center was effective in enhancing mental health of children attending Center for more than 3 years. The implications of study results were discussed.