The sociologist Goffman’s “mage drama theory” can also explain this phenomenon well. In interaction with the torso sex doll, users can freely play various roles and release their emotions that are suppressed in real life. This role-playing not only brings psychological satisfaction, but also helps users better cope with various interpersonal relationships in real life. From a philosophical point of view, the emergence of the flat chested sex doll is a modern embodiment of Descartes’ physical and mental dualism. It regards the body as a material entity that can be shaped and controlled at will, and ignores spiritual needs. True intimacy should be based on the understanding, respect and emotional communication between both parties, which is irreplaceable by any technology.