▎ 摘　　要

NOVELTY - A graphene electrothermal film structure, comprising a graphite electric heating film, electric heating film on the graphene is provided with leakage of first shielding layer and the first waterproof layer, under the graphite electric heating film is provided with a second shielding layer and the second waterproof layer with leakage, first edge of waterproof layer and the second water-proof layer edge is integrated to form graphite electric heating film unit. the graphite heating film unit is set on the heat preservation material layer, heat preservation material layer is set on the cement base surface. further provided with a moisture-proof film layer between the insulating material layer and cement base. upper surface of the graphene electro-thermal film in the utility model is orderly provided with leakage of first shielding layer and the first waterproof layer, under the graphite electric heating film is provided with a second shielding layer and the second waterproof layer with leakage; so, anti-leakage performance of the whole graphite heating film unit is greatly improved, the safety is also improved.