An industrial product design system includes: a muscle activity acquisitor that acquires muscle activity required for each action of a given body area when a product user moves the body area to use an industrial product to be designed； a muscle activity normalizer that normalizes the acquired muscle activity； a function operator that calculates, as a design value change rate, mapping of the normalized muscle activity using a given function； and a design value corrector that corrects the design value of the industrial product to be designed with the design value change rate.
