To provide a cooling device of a charging connector capable of cooling the inside of a connector housing without impairing design performance.

Inside of a resinous case 16 of an electricity-receiving side connector 15, a metallic heat-receiving part 30 is housed so as to adhere to an outer periphery of a secondary coil 28. From a rear plane of the heat- receiving part 30, a heat transmission part 33 projects rearward, and mounting metal fittings 36 which can be mounted to a front fork 14 of an electrically powered bicycle 10 are mounted to the heat transmission part 33. Since the heat-receiving part 30 of the electricity-receiving side connector 15 is mounted to the front fork 14 through the heat transmission part 33 and the mounting metal fittings 36, heat transmitted from the secondary coil 28 to the heat- receiving part 30 does not remain unmoved and the heat is dissipated from the front fork 14 to cool the inside of the case 14.