The earthwork deployment is one of the core issues for pumped storage power station construction projects. It plays an important role in the construction progress, project quality and cost. Considering spatial and temporal relationships of components within the earthwork deployment system, a model is established for analyzing the flow of earthwork data based on the balance of supply and demand during the construction process in this paper. Further, based on the difficulty of unclear data of earth and rock flow in nodes such as transit depots and abandoned dreg fields, a closed-loop data analysis method is proposed for earthwork deployment system of pumped storage power stations by combining Unmanned Aerial Vehicle oblique photography technology. The method is more generalizable and can provide support for the fine control of the dynamic earthwork deployment during the construction process.