There were many attempts to increase the level of environmental cooperation in Northeast Asia. However, intergovernmental cooperation has not brought a substantial effects so far. This article aims to provide a model for multilateral joint research of environmental technologies. Each field of environmental problem requires a Consortium of joint research team and R & D mechanism. This model emphasizes joint-funding, tax-break for environmental investment and the importance of multilateral contract.

This research emphasizes the necessity of building a multilateral environmental cooperation. The Process and Problems of multilateral environmental cooperation system are discussed, and some policy proposals are suggested. Especially for Northeast Asia, a comprehensive multilateral environmental cooperation system is required because of transborder pollutions. Within the contractual environment, international institutions can help the parties of conference to build up national capacity to cope with environmental threat.