An assist device control system is provided. The control system includes an improvement effect data storing unit that stores improvement effect data, which represents a correlation between an improvement effect and an assist force, for each target item for every reference unit period for a plurality of types of target items, a data recognizing unit that recognizes the improvement effect data for each of a plurality of target items, and a schedule determining unit that compares the recognized improvement effect data, determines a target item to be prioritized for every reference unit period, and determines the assist force to be generated for every reference unit period on the basis of the improvement effect data of the target item to be prioritized.