Abstract: Intelligent spatial information service is one of the most important area in GIS application and servici,grid based GIS is the key technology for intelligent spatial information service.In grid spatial information service,node is the basic cell of grid spatial information service system.Node construction researching is classify and manage the spatial information resources and GIS software component used to operate spatial information resource.According to the characters of intelligent spatial information system,we classified the spatial information service node as portal node,manage node,spatial information service node and function service node,and discuss the construction of each node.In the end we test the node construct method in an application system,make a conclusion and the future research areas.