Abstract: The balance of soil and rock is an important link in production and construction projects, which is related to the selection of the material yard and slag disposal yard, and directly affects the project investment. Taking Gaoda reservoir junction project in Wuxuan county of Guangxi province as an example, the calculation of excavation and filling amount, the planning of temporary mound yard, the selection of yard material and the comprehensive utilization of waste slag are analyzed, and each scheme is evaluated. The evaluation results show that the soil and rock allocation scheme and control of water and soil erosion of the project have good economic and ecological benefits under the premise of ensuring the smooth construction of the project.