Modified graphene oxide(GSGO) was prepared by intercalation of graphene oxide(GO) via Gemini surfactants(GS), then composites of GSGO/PANI were prepared by in situ polymerization method using aniline(An) and GSGO as raw materials,ammonium persulfate (APS) as initiator.Finally, the GSGO/PANI/WAR anti-corrosion coating was obtained by blending with GSGO/PANI and WAR. The structure and morphology of GSGO and composites were characterized by FT-IR, Raman, XRD and SEM. The results showed that GS inserted into the GO ,the layers spacing of GSGO were increased and rod-like polyaniline dispersed in GO sheets, forming flaky intercalation structure.The Tafel polarization and electrochemical impedance spectrum test show that the GSGO/PANI/WAR composites coating had higher corrosion resistance than pure WAR coating. When the mass fraction of GSGO were 10 %, the corrosion resistance of coating is the best. The corrosion current density was decreased from 9.82 ? 10-6 A/ cm2 to 1.08 ? 10-6 A/ cm2, the corrosion potential was increased from -56V to -0.28V, | Z | values can reach 5.25 ? 106 ohm.cm2.