This dissertation examines the development of Digital Government Service Platform (DGSP) in China. This exploratory research centers around three core questions: to what extent do DGSPs differ in local China? What factors and how do they influence the imbalanced development of DGSPs and digital service integration at local level? What factors influence citizens’ DGSP use, and how does DGSP influence citizens? By employing a mix-method research design, this dissertation explores DGSP’s evolution, local practices, and the implications for government-citizen relations. This research presents four stages of DGSP development in China and identifies the disparities of local DGSPs. Meanwhile, this study finds that the change in power and resource distribution among actors and contextual characteristics are jointly influencing local DGSP development. Moreover, this study has identified variables correlated to individuals’ DGSP use. Citizens’ satisfactions on DGSP and the government-citizen communication tools are both potential to decrease traditional preference on personal connection, enhance government performance, improve perceived government transparency, and promote social equity. Overall, developing DGSP is a process of strengthening top-down digital supervision, promoting cross- government collaboration, improving government-citizen relations, and centralizing data. This dissertation contributes to understand the interactions of actors and institutions in complex dynamics of digital government transformation and generates empirical knowledge of digital government studies in non-democracies.