The Loess Plateau region is chosen to be researched in this paper. The method and procedure of the application of "3S" in the research of the waterpower desertification is discussed in this paper
and an analysis method of cartography based on MapGIS is attempted. The design of map on current status of the Loess Plateau region is finished
and a graphic database and corresponding character database are set up. This work will help the researching and renovating of the "three north" area in China
especially it will actively work on the environment constructing in Northwest China.