▎ 摘　　要

NOVELTY - Reducing resistivity of single crystal copper wire comprises (i) annealing single crystal copper under non-oxidizing gas and protective gas atmosphere at 500-1000° C, and (ii) introducing carbon-containing gas into the single crystal copper wire, reacting at 0.1-760 torr for 0.1-9999 minutes, stopping introducing the carbon-containing gas, and cooling to room temperature to obtain the single crystal copper wire covering the graphene film, where the carbon-containing gas comprises carbon monoxide, methane, acetylene, ethanol, benzene, toluene, cyclohexane, and/or phthalocyanine. USE - The method is useful for reducing resistivity of single crystal copper wire. ADVANTAGE - The method is simple and easy, has high repetition degree, and greatly reduces resistance rate of the single crystal copper wire after growing graphene.