A product state display system operates so that a person who looks at a pseudo living matter can easily understand the state of an industrial product at first glance in the case where the state of the product is represented by displaying the pseudo living matter. The pseudo living matter displayed on a display device shows both the "aging state" corresponding to the "progress state of time-dependent deterioration" of the industrial product within an endurance period and the facial expression corresponding to a "temporary state" of the industrial product. Accordingly, it is possible for a person who looks at the pseudo living matter to quickly and easily understand two states (progress state and temporary state) of the industrial product with just one glance.