It is difficult to learn, understand and refer to the traditional 2-D display of sci-tech achievements in hydropower engineering. In order to solve this problem, we analyzed the limitations in the traditional form of paper carrying in transmission and expression of information, and proposed the concept of BIM(Building Information Modeling)-based visualization. We established a digitized model of hydropower engineering construction objects with scene reconstruction technology, 3-D simulation technology and 3-D interactive technology. Through this model, construction methods and construction process of sci-tech achievements are visually simulated, and all-round and multi-angle interactive browsing of the virtual construction objects is realized. The model could exactly transfer a large number of sci-tech information achievements in a short time, and offers a completely new and highly efficient learning experience to the sci-tech achievements. It is also beneficial for the assessment and promotion of scientific and technological achievements.