Abstract: The geological exploration work of Xianyou pumped storage power station began in 1993,September and until 2013,December four generating units was put into commercial operation, which took 20 years. With the development of exploration work and condition of engineering construction excavation, engineering geological conditions have gradually become clear. According to revealed engineering geological conditions in the scene, the design of the power station was optimized, which plays an important role in in the works to improve the security, stability or reduce engineering investment. In this paper, aimed at revealed engineering geological condition in the scene conditions, relevant measures in the design are expounded by the comparison in engineering geological conditions of early exploration stage and construction stage and it will be a reference for similar engineering.