▎ 摘　　要

NOVELTY - A graphene electrothermal film preparing method involves depositing a graphene electrophoretic slurry uniformly on a metal substrate by an electrophoresis process to form a graphene conductive polymer film, etching the metal substrate into an electrode and passing the electrode film after etching to obtain the finished product. USE - Method for preparing graphene electrothermal film for electrothermal device that is utilized in electric heating field (all claimed). ADVANTAGE - The method enables preparing graphene electrothermal film with uniform heating temperature, better heating performance, high batch stability, in simple and easy manner. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a graphene electrothermal film prepared by the method (2) an electrothermal device.