This study was performed under the need for systematic analysis about the effect of religious activity of a protestant married women in Korea on the relational satisfaction between her and her family members. It was separately analyzed that church-centered religious activity and home-centered religious activity. The purpose of this study are to propose religious activity that could allow for a satisfactory relationship between all family members of a protestant married women, and to contribute to make a harmonious family through recommended activities for a protestant family and church to accept and carry out. The analyses of the results are in case of the pure explanation power that religious activity has on a protestant married women and her family member’s relational satisfaction, the couple relational satisfaction degree from wife is 4.6%, the one from husband is 4.4%, the mother-child relational satisfaction degree from mother is 2.5%, and the one from child is 1.5%. Therefore effect of religious activity on family member’s satisfaction is more couple relational satisfaction than mother-child relational satisfaction, and the significant variable on all the relationships between the protestant married women and her family members are home-centered religious activity.