Copper (Cu) is well-known as an efficient catalyst for the electrochemical reduction of carbon dioxide (CO2) into multi-carbon compounds. However, Cu undergoes morphological changes during CO2 reduction, decreasing product selectivty and reaction stability. Herein, we propose a core@shell structured copper nanowire (CuNW) wrapped by graphene quantum dots (GQD) to suppress structural deformation during CO2 reduction. GQD shell on CuNW was successfully synthesized through mild sonication method and characterized by TEM, XPS, XRD and EDS. In a 1M KOH electrolyte, GQD-wrapped CuNW effectively suppresses hydrogen generation at -4V, while bare CuNW exhibits significant hydrogen evolution. This result suggests that morphology of the Cu catalyst was significantly stabilized by GQD shell during electrolysis. Wrapping the CuNW proved to be a practical approach to maintaining CO2 reduction performance.