The global sustainable development agenda of the United Nations stresses governance and partnerships involving public and private actors as key elements for achieving the sustainable development goals. This paper relates the analysis of China’s growing engagement for sustainable development to the concept of collaborative governance. Based on the analysis of literature, policy documents, participation in conferences as well as interviews with experts, it proposes five factors to explain the promising developments of collaborative governance for sustainable development in China: political leadership, discourses, in-country expertise, institutional density and international cooperation. Against the backdrop of a strong government and tightened political supervision in many policy areas under the Xi Jinping administration, Chinese academics as well as practitioners largely agree that the “green development agenda” stands out in providing opportunities for the business community, think tanks and universities as well as nonprofit organisations to implement projects and gradually influence policies and practices related to the promotion of sustainable development.