In view of the problems such as high quality requirements, significant construction difficulties and complex construction conditions for the concrete project of the rock wall crane beam in the underground powerhouse of pumped storage power stations, taking a certain pumped storage power station in Xiamen City as an example, this paper discusses the concrete construction technology of the rock wall crane beam. By employing strategies such as blocking alternate pouring and simultaneous construction across multiple work faces, the construction speed of the rock wall crane beam concrete was effectively increased. Additionally, by strictly controlling the concrete pouring temperature and the interval between blasting and excavation, the construction quality of the concrete was ensured. Engineering practice verification shows that the concrete construction technology of the rock wall crane beam performs well in the application in the underground powerhouse of the pumped storage power station.