▎ 摘　　要

NOVELTY - The utility model relates to the technical field of household physical therapy appliance, specifically claims a composite back plate structure, wherein comprising two side plates with a notch and a graphene plate embedded in the notch and located between the two side plates; the graphene plate is set in parallel up and down; the notch is " U " - shaped; and the opening faces the graphene plate; two inner side walls of the notch close to the graphene plate are symmetrically provided with a contact for limiting and fixing the end part of the graphene plate. through setting the graphene plate in the sauna room, and limiting and fixing the graphene plate through the set contact, heating the sauna room indoor room, heating is fast, heating uniformly, separating the graphene plate by the contact, convenient to disassemble, convenient for cleaning and cleaning, convenient for containing and saving space.