In order to improve the efficiency and accuracy of model construction, and strengthen data security and privacy protection, the 3D model construction technology of industrial site is studied. This paper describes the principle, implementation steps and technical advantages of parametric modeling, reverse design modeling and UAV image modeling technology in the current stage of industrial field model construction, and puts forward the problems and challenges in the process of industrial model construction. The results show that 3D modeling technology can provide a strong guarantee for the digital and intelligent transformation of industrial site.