Comprehensive utilization of electric vehicles (EVs) and renewable energy is a hot issue nowadays, but how to confirm capacity ratio of EV charging infrastructures and PV/wind hybrid system in micro-grid is still unsolved. This paper presents a model to perform the optimal sizing of a stand-alone hybrid PV/wind generation system integrated with EV charging stations. In the model, the constraint conditions of PV/wind system, recharge and discharge machine and EV battery are considered, as well as EV charging demand and energy storage capacity of battery switch mode. It takes the minimum total costs including investment, operation and loss cost due to lack of electricity as the objective. Differential evolution (DE) algorithm is used to solve optimal capacity configuration containing wind turbines, PV battery, EV battery, and recharge and discharge machine. In the end, the system planning example of an area is solved and analyzed, and the results show that the model is reasonable.