This study focuses on the international cooperation for environmental management. Each developed country has proposed its original environmental policies. The up-to-date policies will be discussed at the coming Hokkaido Toyako Summit, which is expected to accelerate the actions of solving environmental issues. Emphasizing the importance and necessity of strengthening the Japan's international environmental cooperation with universities, this study attempts to propose two additional functions of university. One is to provide the platform which could serve to promote effective communication among various stakeholders. Another is to play the role of exploring the innovative possibility related to education and personnel training, i.e., universities should deal with the issues of uncertainty related to the international environmental cooperation. At the same time, international cooperation agencies should contribute to expand the human network including the universities.