▎ 摘　　要

NOVELTY - The utility model belongs to the technical field of heating device, specifically relates to a portable heating device, comprising a heating box, graphene heating belt and battery pack, side wall of the heating box is provided with the graphene heating belt, the battery pack is detachably connected with the heating box, the battery pack is electrically connected with the graphene heating belt, the battery pack is provided with a charging port, above the charging port is provided with a switch, the utility model heats uniformly when heating, the heating speed is fast, it reduces the potential safety hazard when meeting water, the heat conversion rate is higher.