The purpose of this study is to review Korean literature concerning sibling relationships during the last three decades and investigate facts and trends, research issues, and pragmatic and policy issues related to sibling relationship development. Most of the past research has been concerned with the effects of sibling status/structure variables on siblings' individual differences in intellectual, social and personality characteristics. In recent years, however, considerable attention has been focused on the interpersonal relationships between siblings and the factors influencing such relationships. More specifically, sibling relationships and adjustment of siblings of children with disabilities begin to draw attention of researchers and practitioners. This review consists mainly of two parts : one on siblings of children with no disabilities and the other on siblings with one disabled child.