Abstract: This paper discusses how to use analysis method of graphs and images as well as, idea of expert system to make geological map information quantitative, and how to apply linear or nonlinear model to indicate spatial relation and digital character of the information, so that geologist may quantitatively analyze geological map information. As exemplified by resources prediction of gold and polymetals in Mian-Lue-Nin region, Shanxi province in China, it illustrates how to apply geological map information for carrying out spatial thinking and digital thinking, and realizing rapid appraisal of regional resources quantity. At last the paper gives distribution map of resources potential that region.