With the big data decades coming, analysis on data science in cyberspace becomes more and more complex. For applications in the real world, data are heterogeneous, high-dimensional and dynamic, which brings challenge in data processing and makes it even difficult to analysis. Data Visualization combines advantages in data processing and visual sensing of both human and computer, and provides us intuitional understanding of data. This workshop, collocated with the 2nd IEEE International Conference on Data Science in Cyberspace (IEEE DSC2017), will bring big data producers and users together with visualization researchers and practitioners, and foster great exchanges between them. Attendees will be introduced to the latest and greatest research innovations in data visualization, and also learn how these innovations may impact decision making and knowledge discovery in real-world applications. We solicit papers on both original research and practice of data visualization and analysis.