A heating and cooling cup holder may include an inner holder having an air hole, a heat exchanging unit covering the air hole and having an intake port at a first side so that air flowing inside through the intake port exchanges heat through heat transfer fins in the heat exchanging unit and flows into the inner holder through the air hole, a peltier element having a front coupled to a rear of the heat exchanging unit, a heat dissipation module including a heat sink and a heat dissipating fan coupled to the rear of the peltier element, an outer holder surrounding the side of the inner holder and defining a ventilation space together with the inner holder therebetween, and a blower disposed in the ventilation space and having a discharge port connected to the intake port of the heat exchanging unit.