Based on the summarization and comparison of the e-Geoscience research progress in both domestic and international levels, this paper introduced the relevant work conducted by IGSNRR(Institute of Geographical Sciences and Natural Resources Research, CAS) since the 1980s. Classification architecture of three levels of Earth System Science data was put forward, i.e. “Earth Circle, Discipline, and Data Class”. The System of Earth System science data resources has subject databases as the core elements, with data source points as supporting elements.Under the development environment of J2EE,Earth System science data platform has been developed by employing Web Service, GIS and other technologies. In the end, the author discussed the future research frontier of e-GeoScience.