Abstract: With the GIS technology,the author researched and developed the computer-aided production system for cutting section of a geological map.This system can solve the fold symbol and traditional symbol filling well,and using the data mining technology,it can promote the automation greatly.And at the last,an example of the production of the cutting section of geological map for Zhoukoudian,Beijing,proved that this system have high efficiency and quality,and it can fulfill all kinds of production of cutting section of geological map.