In order to better control geological disasters, in this paper, the automatic calculation of the degrees of geological disaster has been carried out by VB application programming , and the partition and evaluation of the geological disaster distribution in Shandong Province have been implemented. The geological disaster evaluation system of Shandong has been developed by using the GIS system software MAPINFO and the second developing language MAP BASIC. In the evaluation system, the digitalization of the map has been carried out, the different objects are managed in different map layers, and it is handy to seek and statistically analyze in space regions, some functions of assistant decision making are offered. These make some conveniences for the decision maker.