Abstract: A network GIS architecture based on object-based storage(OBS) composed of four-level hierarchical structure including,the application layer,the service layer,the transport layer and the storage layer is proposed.In the architecture,the service layer uses the server cluster to solve the first bottleneck in the current network GIS architecture,and the transport layer and the storage layer use the OBS solve the other one.The paper have designed and realized a prototype GlobeSIGht,and give some related test results.