An industrial product design system (10) includes: a muscle activity acquisitor (11) 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 (12) that normalizes the acquired muscle activity； a function operator (13) that calculates, as a design value change rate, mapping of the normalized muscle activity using a given function； and a design value corrector (14) that corrects the design value of the industrial product to be designed with the design value change rate.
