Under the new curriculum of geography implemented in 1999, 60% of material taught in the fall semester of the twelfth grade is related to geographic information science. This new curriculum is a rare initiation in geographic education around the world. A successful implementation of this program requires a well support from various factors while teachers' professional competence play the key role. In accordance with an ongoing project of developing GIS teaching models, this research explores teachers' abilities and supplementary measures in teaching GIS. We adopt the methodology of observation and action research to explore the problems and obstacles teachers face when using GIS. The result indicates that the awareness of spatial perspective is the main factor. Lack of computer ability and geographic data also influence the application. We suggest that GIS dissemination should emphasize more on nurturing basic geographic knowledge and concept, especially on nurturing spatia1 perspectives.