While China has been portrayed as a reluctant supporter of UN peacekeeping in the past, it has voted in favour of every newly established UN peacekeeping operation since the beginning of the new millennium. Previous studies of China's behaviour in UN peacekeeping explained this phenomenon primarily with recent shifts in its foreign and security policy rather than with changes in UN peacekeeping itself. This article analyses China's voting behaviour in the UN Security Council on peacekeeping resolutions in the context of the evolving concepts of UN peacekeeping. It argues that China's recent enthusiasm for these missions is the result of two developments. On the one hand, Beijing was able to reinterpret its understanding of UN peacekeeping after its experience in the 1990s, especially with regard to the use of force; while on the other hand, the way UN peacekeeping missions are conducted was reformed after the Brahimi Report in 2000, which made UN peacekeeping more agreeable to the China.