With　the　rapid　development　of　grid　technology,　studies　on　building　web　spatial　analysis　functions　under　grid　environment　have　become　the　research　hotspot　of　GIS.　To　implement　complex　geo-processing　functions,　it　may　need　to　integrate　several　different　GIS　service,　which　is　usually　distributed　in　different　computer.　Grid　GIS　provides　a　highly　interactive　and　cooperative　mechanism　in　implementing　and　integrating　the　geospatial　service.　This　paper　first　briefly　introduces　the　most　important　part　in　building　Grid　service-WSRF,　then　give　an　example　to　illustrate　how　Grid　enabled　GIS　service　can　bring　higher　efficiency　and　make　GIS　service　more　cooperative　than　traditional　GIS　service.