To meet the increasing demand of national spatial database infrastructureconstruction and application, a concept modelof China' s coastal zone scientific data platform is established based on the information feature analysis of a compounddataset, consisting of remote sensing data and conventional data. Based on this concept model, the detailed logicaldatabase structure and the storage strategy of remote sensing data and their metadata using ArcSDE are designed. Thecomplicated technology of multisources data combination in this research is crucial to the future coastal zone andoffshore database construction and practical nmning, which will provide intelligent information analysis andtechnological service for coastal zone and offshore investigation, research, development and management.