Abstract: In view of problems that waste mine can easily cause surface subsidence and soil erosion, the paper proposed to transform corresponding underground area into pumped-storage power station, and then combined with wind-light complementary system to establish wind-light-pumped-storage combined complementary power generation system. Tracking load curve and minimizing system output volatility are taken as the optimization target to establish output mathematical models of wind power generation, photovoltaic power generation and pumped-storage power stations. Improved particle swarm optimization algorithm is used to solve the models under the constraint condition of considering wind-light complementary characteristics and power transmission power. The simulation results show that the models can be used to track the optimization target, and effectively solve the problem of power fluctuation and consumption when the new energy is connected.