The purpose of this study were to develop family welfare service program on interrelationship improvements of children. For this purpose, programs related to children that is performed by social welfare agency and that is based on group psychotherapy were included. The results were as follows. First. programs related to children that is performed by social welfare agency are insufficient to evaluations of plans, performance and outputs. In particular, speciality of social worker in perform on programs in related to children is absent. Second, programs of interrelationship improvements of children based on group pychotherapy were specialized in evaluations of plans, performance and output. Through out this analysis, the program of interrelationship improvements of children is developed. This program is based on group psychotherapy, include art therapy, sociodrama.