▎ 摘　　要

NOVELTY - The utility model claims a preparation device of graphite film, belonging to the preparation field of graphene, wherein it comprises a punching mechanism and a heat treatment box set along the production line direction sequentially the punching mechanism is located above the raw material oxidation film graphene for punching the graphene oxide film, the heat treatment box is provided with a temperature control mechanism; The utility model can greatly relieve the cracking or combustion problem of the product film and improve the safety of the production.