The program of constructing Chinese granite GIS is discussed in this paper. On the basis of collecting, synthesizing, analyzing and coordinating Chinese granite geological information in an all_around way, the property information of geological map is to be reasonably classified and coded, and the property data and graphics data for granite are to be established and correctly connected respectively. With the computer and network communication technology, Chinese granite GIS will be finally constructed. Then, the establishment of Chinese granite professional website on Internet will provide online service. It is possible to search for Chinese granite geological information according to such keywords as spatial positions, strata, structures, petrology, mineral resources, geophysics and geochemistry.