As one of the important development directions of energy storage technology，the hybrid energy storage system of super-capacitors and batteries combines the advantages of power-type energy storage elements and energy storage components while avoiding the inadequacy of a single energy storage technology.For energy storage applied on high-power，high-capacity and strong volatility occasions，on the basis of analyzing the demand of the load characteristics，a way of configuring the total storage capacity is given and a hybrid configuration scheme for the super-capacitors and batteries program based on cost analysis is proposed.The example has proved the effectiveness of the proposed method.