After the 1990s, Japan has been deeply influenced by international trends as well as its own political and economic development. With the traditional Tenno system, Japan confronted the rapid rise and impact of the civilians' social consciousness. The change can be observed and traced back to the period after the Great Hanshin earthquake in 1995, when a volunteering civic engagement started automatically and later spread up the realization and implementation of the Non-Profit Organizations (NPO) Act. Based on my observations regarding legal regulations and institutional changes , this dissertation constructs a society-centered theory to explore and to analyze the relationship between the Japanese government and NPOs during the new period. This dissertation also seeks to explain how civic social ideologies developed and promoted the NPO Act and the establishment of the new JICA. In order to be more precise on the topic, I examine the change and the development by dividing the progress into ¡§traditional period¡¨ and ¡§new period¡¨ with after the cold war in the 1990s. On reviewing the changes of patterns and features of the development, I study the new interactive modes between state and society. The emphasis of this study is to show how Japan accelerated the NPO and ODA legal regulation and institutional changes. Furthermore, the study discusses how, the unique and new type of intermediate organizations, that support NPOs, developed after the execution of the NPO Act, and how those agencies provided local governments with NPOs cooperative partnership. In addition, this dissertation uses the platform of NPO Center of Chiba Prefecture as a case study, to analyze how to effectively combine members to spread the idea of ¡§NPO Prefecture,¡¨ and how to reorganize the system of new JICA in order to adopt outward environment and inward NPO participation. In other words, by demonstrating this new mode of cooperative partnership, the study expects to provide scholars with a reference of relative subjects and hopes to support the development of civil society in the developing countries.