With the rapid development and wide popularity of the Internet, Chinese people have acquired a revolutionary channel to mobilize collective action and to participate in politics. In order to depict the various factors influencing online collective action in China, and to further explore the dynamic interaction between the Chinese authorities and the public in this new era of collective action, the article attempts to integrate the demand-supply model with relevant studies from both China and abroad to make a systematic analysis of the demand, supply and mobilization of Chinese online activism. The impact of the new communication technology on political participation and the political ecology is discussed and questions are raised for future ...