This paper aims to clarify the difference and the issues of the Unification of Kindergarten and Nursery Schools Policy (Unification Policies) between Japan and Taiwan by analyzing the integrated-childcare-institutions, Taiwanese kindergartens and Japanese Certified Centers for Early Childhood Education and Care (Certified Centers). These institutions were introduced under the implementation of the Unification Policies. The background, purpose, institutional framework and the status of integrated-childcare-institutions were examined in this paper for exploring the research questions. The above examinations raise three different points of Unification Policies between Japan and Taiwan. First of all, Japan and Taiwan adopted the traditional sys...