The enhanced corrosion resistance with sustained conductivity are the prerequisites of stainless steelbipolar plates for practical application in proton exchange membrane fuel cell. Herein, we prepare aconductive polypyrrole-graphene oxide/polypyrrole-camphorsulfonic acid bilayer composite coating(PPY-GO/PPY-CSA) on 304 stainless steel bipolar plate by electrodeposition method. The electrochemicaltests are conducted in the simulated bipolar plates working environment, the potentiostatic polarizationresults imply that the PPY-GO/PPY-CSA composite coating offers stable corrosion resistance with lowpotentiostatic corrosion current density in comparison with the PPY-GO coating. The correspondingelectrochemical impedance spectroscopy measurements reveal that the PPY-GO/PPY-CSA compositecoating exhibits satisfactory conductivity and displays sustained anodic protection effect with superioranticorrosion performance during the 696 h of immersion. The excellent corrosion protection ability ofthe PPY-GO/PPY-CSA composite coating owing to its good adhesion strength, compact structure,satisfactory conductivity as well as the synergetic interaction between the two layers of the coating.