▎ 摘　　要

NOVELTY - The invention claims a heating plate preparation technology field, especially a heating plate, comprising a heating plate main body; the heating plate main body comprises a metal upper cover plate and a metal lower bottom plate; the metal upper cover plate and the metal lower bottom plate are embedded with each other; between the metal upper cover plate and the metal lower bottom plate is provided with an iron-chromium-aluminium heating film layer; the iron-chromium-aluminium heating film layer is connected with an electrode lead connected with the power supply; the two surfaces of the iron-chromium-aluminium heating film layer are compounded with a heat conducting layer; the heat conducting layer is located between the metal upper cover plate and the metal lower bottom plate; the upper and lower surfaces of the heating plate main body are coated with graphene coatings. The heating uniformity and heat conversion efficiency of the invention is good; it can satisfy the heating requirement of railway, medical treatment, pharmacy and so on.