Abstract：The ‘OneGeology Project’ aims at establishing a system that makes use of J2EE and WebGIS technology to serve geological maps on various scales based on Internet. Participating in the project are lots of international organizations and countries as members. Countries involved in the project are to publish web services based on OGC standards and register the access on the OneGeology portal so as to realize the target of geological map data sharing. On the basis of newly established spatial database of 1:1M geological map of China, this paper tentatively applies relevant standards and requirements of the ‘OneGeology Project’ to the study of digital geological map data sharing, which will surely lay the foundation of ‘OneGeology-China’.