Abstract: Grid technology has been used widely in spatial resource sharing. Many kinds of resources (such as large a- mount of remote sensing images, complex observation data and professional geographical software) can be integrally ac- cessed on Internet on demand through grid environment. In order to protect the owner's right,resource's security and user's privacy, the security framework is needed. The framework should be comprehensive enough to cover the resource layer, service layer, transport layer, application layer etc. Meanwhile, the framework should keep each node of the grid themselves. hhis research could give advice to those applications which arc cross regions, cross organisations and share the resource through services.

Key words: Grid computing, Security framework, Spatial information, Data resource, Computational resource