A storage assembly for a vehicle includes a housing having an outlet formed at a rear end thereof, a cooling and heating cup holder installed in the housing and having a thermoelectric element attached to a side end surface thereof, a convenience device disposed to be adjacent to a side of the thermoelectric element in the housing and including a storage tray or an electrical control switch, a heat exchange pin and a blower disposed at the outlet side of the rear end of the housing, and a heat pipe having one end connected to the thermoelectric element and the other end extended to turn aside or traverse the convenience device and connected to the heat exchange pin.