Abstract: Since post-Kyoto negotiations launched, there have been increasing discussions and debates on international climate regime at international level. In August 2006, Brazilian team of the BASIC project put forth a comprehensive package as a basis of an agreement on post-Kyoto international climate regime, known as the Sao Paulo Proposal. In this paper, the principles and key elements of the proposal such as global objective in long term, differentiated commitments of Annex I and non-Annex I Parties, market mechanisms, adaptation, technology research and development and transfer, as well as review and compliance of the proposal protocol are briefly introduced. Then, a preliminary assessment is conducted by comparing with the Brazilian Proposal and by pointing out its inherent limitations on political barriers and technical difficulties.

Key words: the Sao Paulo Proposal, post-Kyoto negotiation, international climate regime