The United Nations Collaborative Programme on Reducing Emissions from Deforestation and Forest Degradation in Developing Countries (UN-REDD Programme) is an opportunity to support and advance the REDD+ mechanism negotiated under the United Nations Framework Convention on Climate Change (UNFCCC). China is the largest developing country in the world with a sizable domestic economic and social development program and a record of great efforts to contain the increase of greenhouse gas emissions and protect the global climate. There is strong willingness of both UN-REDD Programme and China to work together to support the readiness of developing countries for REDD+ activities. To provide policy support for cooperation between China and the UN-REDD Programme, this policy paper explores several key issues on demands and supplies, mutual benefits, and a draft framework for the cooperation.