Abstract: Pumped storage power station plays an irreplaceable role in improving the security, stability and reliability of power system operation, while sediment passing through the turbine is a key factor that restricts the safe operation of power station. This study adopts virtual confluence nodes to simulate complex flow pattern near the inlet and outlet of power station, and integrates the calculations of the upper and lower reservoirs and the sediment passing through the turbine. Then, a numerical model of flow and non-uniform total sediment control is developed for pumped storage power station in daily or weekly operation mode. This model is verified by using both field observation data and physical model tests. In a case study, the effect of reservoir stage on reservoir sedimentation and turbine sediment concentration is analyzed.