The development of 3D GIS provides a powerful tool for civil
engineering decision-making. This paper first introduces the latest development
of 3D GIS, then analyzes the methods of engineering calculation, road design
and inundation area simulation using MAGIS, a 3d GIS software made in
China. The results show that THREE-DIMENSIONAL GIS can improve work
efficiency and decision-making ability, and has a broad application prospect in
civil engineering.