The rapid growth of cybercrime, Internet resources and the number of users, the ‘virtual–reality’ integration of new Internet applications, as well as the uncertainty research for network behavior, chronosphere and the relation of geographical environment, are all needed to develop new space positioning technology to get cyber-objects quickly and accurately locked in the real space. By means of IP locating and virtual GIS, this article explores the establishment of new Internet-based composite space positioning system, which includes: (1) extend the IP protocol to carry IP surveying, establish Internet resource and user space database, setup a new space positioning network; (2) extend GIS data structure, add ‘cyber-dimension’ and ‘virtual attribute’, take IP as the third dimension to space coordinate system, dynamically connect cyberspace and real space; (3) use cybercrime as the research object, make spatial analysis for the composite data, reveal ‘virtual–reality’ space law for the crime fighting, prevention and comprehensive management.