To solve the dispersion problem of graphene in coating，graphene oxide-coated hollow glass microspheres（GO-HGM）were prepared using hollow glass microspheres（HGM）and graphene oxide（GO）as the raw materials. Then，through thermal reduction，functionalized powders（RGO-HGM） with electrical conductivity were obtained. The structure and microscopic morphology of GO-HGM and RGO-HGM were analyzed by FT-IR，Raman，XPS and SEM. The results showed that GO was successfully coated onto the surface of HGM and thermally reduced to RGO-HGM，restoring a certain level of conductivity. Adding RGO-HGM to epoxy zinc rich coatings with a zinc content of 50% could effectively increase the activated zinc content，thereby improving the cathodic protection ability of the epoxy zinc rich coating.The best anti-corrosion effect was achieved when the addition amount was 6%.