The temperature control system of the life size sex doll has been precisely upgraded due to the flat chested design. Engineers buried graphene thermal conductive film in the middle axis of the sternum to make the temperature distribution of the flat chested sex doll more consistent with the real characteristics of the human body. Its intelligent temperature control chip can automatically adjust the surface temperature according to the ambient humidity, maintaining a dry touch during the rainy season. This technology has been applied to the whole body temperature control system of high-end life size sex dolls.