▎ 摘　　要

NOVELTY - The utility model claims a graphene heating device, comprising: a metal frame, a graphene heating body and a protective shell, the graphene heating body is fixed in the metal frame, the protective shell is set on the graphene heating body periphery, and the protective shell is detachably connected with the metal frame; The invention also claims a multifunctional electric heating furnace comprising the graphene heating device, which can greatly improve the electric-heat conversion efficiency, and fast heating speed, energy-saving and consumption-reducing.