A repair apparatus for a vehicle, more particularly, a repair assisting apparatus is provided. The apparatus includes a box having an opening; an ultraviolet rays irradiation device arranged in the box having an irradiation unit for irradiating ultraviolet rays; an infrared rays irradiation device arranged in the box having an irradiation unit for irradiating infrared rays; a first blower for cooling the irradiation unit for irradiating ultraviolet rays; and a second blower for sending hot air from the irradiation unit for irradiating infrared rays to the opening side. The apparatus can efficiently accelerate curing polymerization of putties or paints.