Abstract: Basic of GIS and VR technologies,the automatic modeling method which can convert mine roadway system from 2D to 3D is put forward,the mine roadway 2D representation,data extracting and organization,the mine roadway model 3D building are studied,two data organization methods to extract the mine roadway network data are discussed and realized.The prototype system is developed finally,which has the function of 2D mine roadway data import,model transformation,rendering and driving.According to practice of Dazhuang coal mine of Pingdingshan coal group in Henan Province,the mine roadway automatic modeling is realized,and the effect is satisfied.