This paper conducted the research on big data governance initiative in the context of big data sharing and exchange in government. Guizhou-Cloud Big Data Corporation and Block Data Corporation, representing the Guizhou Province and Guiyang City big data governance initiative respectively, are selected for double-case study. During this process, this study collects qualitative data from interviews, documents and materials. Furthermore, this paper launches the analysis from subject, object and instrument at big data aggregation, integration and application stages. Research findings show that，practices present two kinds of big data governance paths, including reconstruction and exploration on
the level of province and municipality individually, whose key differences are overall planning and practical application. This study is an extension of big data governance theoretical research, and also enlightenment for China’s practices.