Based on 2D & 3D integrated GIS technology, new 3D GIS technology further develops the computing and analysis capabilities of spatial data model, combines oblique photogrammetry, BIM, point cloud, 3D field and other multi-sourced heterogeneous data, and sets an open "Spatial 3D Model Data Format" (S3M) standard. Based on distributed technology, the efficient wholeprocess management of real-time 3D data such as oblique photogrammetry model and point cloud canbe realized. It integrates IT technologies of WebGL, VR, AR, AI, 3D printing and etc. to bring a more realistic and convenient 3D experience, promote 3D GIS to achieve outdoor and indoor integration, macro and micro integration, and aerospace/surface/underground integration, and empower the application of full space new 3D GIS.