Under the background of the "dual carbon" goal, the installed capacity of wind-solar-storage is accelerating. In order to realize the collaborative optimal development of new energy development and carbon emission reduction, a method for the location and capacity planning of wind-solar-storage power station considering the coupling of electricity-carbon market was proposed. First of all, under the electric-carbon coupling market considering the voluntary emission reduction certified by the state, the annual operating cost of distribution network was taken as the economic evaluation index, and the voltage amplitude standard deviation was taken as the stability evaluation index. Then, using the improved non-dominated sorting genetic algorithm with elite strategy as the solution method, the multi-objective planning scheme of wind-photovoltaic-storage power station was obtained. Finally, the IEEE33-node distribution system was used for simulation. The results show that the wind-solar-storage power station planned by the proposed method can effectively reduce the annual cost of distribution network and system voltage fluctuation, which verifies the effectiveness of the proposed planning method.