In　view　of　the　shortcomings　of　the　traditional　lane　modeling,　such　as　low　accuracy,　low　efficiency　and　inaccurate　expression　of　the　local　details　of　the　tunnel,　with　the　help　of　3D　laser　scanning　technology,　the　point　cloud　data　acquisition,　point　cloud　data　preprocessing,　meticulous　lane　data　model　construction　and　fine　laneway　3D　scene　are　built,　the　whole　lane　is　abstracted　point,　line,　polyhedron　three　data　structure　constructed　3D　lane　database.　This　paper　studies　the　database　combination　rule　of　3D　laneway　space　model　constructed　by　basic　elements,　and　realizes　the　dynamic　rapid　construction　of　basic　element　objects　and　laneway　objects.　This　paper　takes　a　molybdenum　mine　laneway　modeling　as　an　example,　through　the　C#　programming　language,　combined　with　ArcGIS　Engine　development,　the　dynamic　construction　of　the　basic　element　object　and　the　tunnel　entity　object　is　realized.　Finally,　the　feasibility　and　technical　advantages　of　3D　laser　scanning　technology　used　in　roadway　rapid　modeling　are　verified　through　research　and　analysis.　©　2017　Aussino　Academic　Publishing　House　(AAPH).　All　Rights　Reserved.