The circular economy has become a non-ignorable business model under today’s society due to the vigilance of running out the natural resources on Earth. With the development of renewable energy and the innovation of materials technology, it enables the possibility of new circular production solution. It also changes the economic system from traditional linear system - goods are produced, used and discarded, to circular system - goods are reuse, remanufacturing, and recycling. Empirical research rarely studies the motivations and intention of consumers on circular economy and its effect on customer participation. The study investigated why people would like to participate in circular economy using self-determination theory (SDT) as a base to understand the extrinsic and intrinsic motivations. At the same time, we pointed out social identification and accessibility to be important moderators to customer participation intention, given that the focus of circular economy is no longer on consumption, but instead on the use of a function. Moreover, people would like to be treated as responsible global citizens thru this participation. Two different types of circular economy models - “monetary” and “non-monetary” were studied to understand the different effects of motivations. The result should provide the new marketer of circular economy a guidance on what they need to focus when face the new era.