Using the programmable interfaces provided by Google Maps, we create a campus spatial information service system. It uses free high resolution remote sensing images as the base map and it adopts open source software and function components. Making full use of the network data and combining Google Maps and MySQL database, it provides users with rich and interactive information such as the picture, description, link and the useful measurement tool. With a breakthrough compared with the traditional system which is manager-oriented and closed, the system uses the current prevalent B/S model and absorbs the mashup idea on the platform architecture design .These expand the scope of service people and reduce the developing difficulties and cost remarkably. The system integrates some promising key technologies of Web2.0 and pushes forward the applying of public participate GIS. All these make better service of personalized and humanistic digital campus.