In the networking age, Chinese government have done much on official online platforms for providing service and improving interaction between government to citizen (G2C). However the problem is the G2C platforms seem always could attract only part of citizen participation. Although most previous studies discuss e-participation, e-government service adoption from technological perspectives or personal psychological perspectives, this paper tries to explore the determinants of e-participation intention from the civic awareness perspective. After develop a feasible ways in Chinese culture to measure the concept of civic awareness in two dimensions, public value and contractual spirit, the paper propose a conceptual model of the impact of civic awareness on citizens’ e-participation intention and validate it by an empirical survey toward a G2C platform of Beijing, the capital of China. The statistical results of empirical data show that the perception of public value make makes dominant role on citizen e-participation. The briefly discussion and managerial implication toward government are also provided in the paper.