▎ 摘　　要

NOVELTY - The method for preparing graphene carbon fiber, involves (1) impregnating carbon fiber with alloy complex solution for 15-30 minutes to obtain carbon fiber wet material, (2) drying the carbon fiber wet material to obtain carbon fiber dry material containing coagent, (3) heating the carbon fiber dry material at 600-900 degrees C in an inert gas atmosphere, introducing multi-carbon cracking gas, carrying out catalytic cracking of coagents, performing chemical vapor deposition reaction for 0.5-2 hours to obtain graphene carbon fiber. USE - Method for preparing graphene carbon fiber for use as electrically conductive material and thermally conductive material. ADVANTAGE - The method enables preparation of graphene carbon fiber with excellent electrical conductivity and thermal conductivity.