The invention relates to a random robust optimization-based dispatching method of a power system, and belongs to the technical field of power system running control. The method comprises the steps offirstly, building a power system dispatching model comprising a target function and a constraint condition; secondly, converting the constraint condition, and converting an original model to a non-linear optimization problem; and solving the converted model to obtain power generator output, and performing a corresponding dispatching decision to achieve power system dispatching according to a solution result. The fluctuation of regenerative energy in the power system is considered, the correction control cost is reduced, the safety of the power system is ensured, and the method is suitably applied to a scene such as rolling dispatching of the power system.