Abstract. The article discusses based on metadata and web services geological information integration and sharing service platform architecture. Studies the key problems encountered in the process of platform architecture and the main solution. Article mainly study in the field of information resources as the research object, discusses the meaning and main characteristics of geological information, summarizes the geological information using the major contradictions and problems, and puts forward a geological model of information integration and sharing, was discussed based on metadata and web services geo-information integration and sharing service platform architecture. Studied the main method and the key problems in the process of platform architecture.