The invention relates to a parameter configuration method and system of power generating rights. Expected values and tolerance values of generating right circulation parameters of other sets are obtained, the generating right circulation parameters of other sets are randomly generated, a plurality of sets are selected from other sets, an integrated efficiency value of a first set with the selected plurality of sets for generating right circulation is obtained, accordingly, multiple integrated efficiency indexes of the generating right circulation parameters corresponding to the first set are obtained, and the generating right circulation parameters corresponding to a maximum value among the integrated efficiency indexes are taken as optimal generating right circulation parameters of the first set. According to the scheme provided by the invention, the generating right circulation parameters of other sets are randomly generated, the optimal generating right circulation parameters are determined according to the integrated efficiency indexes of the first set, risks and efficiency of the first set are taken into consideration, at the same time, and change of the generating right circulation parameters of other sets are also considered, such that the flexibility of the generating resource adjustment capability of a power system is improved, and optimal configuration of resources of the power system is realized.