1、ArcGIS10.0：C：ProgramFilesArcGISDesktop10.0CoordinateSystemsProjectedCoordinateSystems或C：ProgramFilesArcGISDesktop10.0CoordinateSystemsGeographicCoordinateSystems。2、ArcGIS10.1：C：ProgramFilesArcGISDesktop10.1CoordinateSystemsProjectedCoordinateSystems或C：ProgramFilesArcGISDesktop10.1CoordinateSystemsGeographicCoordinateSystems。