In the recent history of democracy, East Asian countries have tried vigorously to consolidate their democratic foundation, and to implement new practices of public participations to create strong civil societies. Such efforts extend to the field of science and technology policy-making, which has been dominated by elites and experts, but has now become the touchstone to examine the depth of democratization. This special issue shows how STS scholars from Japan, Taiwan and our Western counterparts approach public participation of science and technology. The three research articles and Brian Wynne's critical commentary collectively demonstrate the diversity of cases, methods and theoretical perspectives in this important field, and we hope this special issue opens up more room for further intellectual adventure.