A cooling and heating cup holder includes a holder body having a container shape, formed of a thermally conductive material, having a substantially uniform thickness, and having a contact portion pressed from an inner side to integrally protrude outward from one side surface thereof and having a contact surface forming a predetermined plane; a Peltier element including an operation surface and a heat radiating portion having an opposite row opposite to the operation surface and installed such that the operation surface is directly attached to the contact surface at an outer side of the holder body to transfer heat to the contact surface; and an air conditioner including a heat radiating duct in which the heat radiating portion of the Peltier element is buried and a blowing fan for blowing out air at one side of the heat radiating duct.