Abstract: The 3D geological model can show the characteristics of geological conditions in an all-round way, which is the basic premise of scientific and rational development and utilization of underground space.According to the basic data of topography, drilling, drilling column chart and geological profile of Kaifeng Wanda Plaza, based on the GEO5 3D geological modeling software and the mixed method of “Drilling + Profile”, it constructed the 3D geological model of Kaifeng Wanda Plaza and made the comparison and verification of original exploration section.