A wireless power transmission device for a vehicle is provided. A wireless power transmission device for a vehicle includes: a wireless power transmission module including at least one wireless power transmission antenna for transmitting wireless power, and a magnetic field shielding sheet arranged on one surface of the wireless power transmission antenna; a radiation case having one side to which the wireless power transmission module is coupled, having at least one circuit board embedded therein so as to drive the wireless power transmission module, and radiating heat generated by a heat source; a radiation plate arranged between the wireless power transmission module and the radiation case, and dispersing heat generated in the wireless power transmission antenna; an insulating layer arranged on one surface of the radiation plate so as to block thermal transferring between the radiation case and the radiation plate; and a cover detachably coupled to the radiation case.