The aesthetic revolution in contemporary society is reshaping the adult product market. The popularity of flat chested sex dolls confirms the diversification of body cognition. Life size sex doll manufacturers found that 38% of consumers who chose the flat chested design said that this was an active deconstruction of mainstream sex symbols. Psychological research shows that the psychological projection index of this type of user group on the "childlike continuation" feature is lower than expected, and they pay more attention to the overall proportion coordination of the product. It is worth noting that 27% of the collectors of flat chested sex dolls are teachers and students of art colleges. They regard them as three-dimensional teaching materials of human aesthetics. This cultural phenomenon promotes the penetration of life size sex dolls into the field of art collections.