Abstract:With the rapid development of science and technology, the shortcomings of traditional two-dimensional design in the construction of water conservancy and hydropower projects have been increasingly prominent and restricting the advancement of water conservancy and hydropower project management. Against this backdrop, application of BIM (Building Information Modelling) technology is introduced in this article. BIM enables visualized management throughout project lifecycle to facilitate coordinated work within water conservancy and hydropower projects, and thus to improve engineering management. This article explains from technical scheme, integrated software and work pattern how to implement BIM-based reversal design in all sectors involved in a hydro-project, such as buildings, pipelines, embankments, metal structures and electrics. The high-precision 3D modelling of them allows for information sharing so as to facilitate holistic operation, and is able to enhance the quality and efficiency of hydro-power engineering. In brief, BIM-based reversal design is worth promoting in hydro- power engineering.