Abstract: The interoperablility and information sharing of GIS(geographic information system) information by means of organization and communities have become more important due to the growing demands of GIS information research and application. In the past several years, interoperability gaps have generated an obstruction of crossa2protocol and crossa2community data access within the Earth science community. One such gap is between two protocol families developed within the geospatial and Earth science communities. Although it is need to use data from both geoscience community and OGC(open geospatial consortium) community, there is no interoperability product between OGC CS/W(catalog service for web) and THREDDS(thematic realtime environmental distributed data services) catalog system. The first problem we face is the information models heterogeneity between these two catalogue systems. This paper will focus on the effort of information model transformation. ISO profile in CS/W and their interoperability with THREDDS catalogue schema are discussed in this paper. After that, it describes the detail strategy during the process of element mapping and illustrates the resolution of the semantic structural heterogeneity and syntax heterogeneity, and it also gives the method to advance the CS/W server flexibility during the connection with many different profile CS/W clients.