Basic Polygon(BP)is essential unit for the generation,storage, management of spatial data in the vector based GIS,also it s the map unit that can t be plotted to less unit for thematic series mapping.

During this period, the in-depth reporting, including thematic series reports,became the characteristic products of the newspaper and have got press general approval.

Developing serial thematic lectures of teaching,renewing educational concepts and deepening reform in teaching;

The paper introduced the basic concept of water and soil conservation mapping,concluded the technical thoughts of the series thematic mapping of water and soil conservation assisted by computer.

The author analyzes the necessity of its alteration from the current situation and historical reasons and expounds the significance of repair and protection of historic buildings through the successful case of alteration of special topic exhibition room in the memorial of the first national congress.