datamodel and functions of Temporal Geography Information System(TGIS) have beenstudied and evaluated.Developing TGIS which is built up on the base of topologi-cal structure of spatiotemporal data is trend of GIS.The strong TGIS with functionsof space-temporal data management and query
temporal interpolation and aggrega-tion
the tools of time-series and time-space analysis
visualization will promoteGIS to be used more intensively and extensively.