The work aims to study corrosion resistance of polyaniline/graphene waterborne anticorrosive coatings. With hydrochloric acid (HCl) as doping acid and polyvinylpyrrolidone (PVP-K30) as space stabilizer, the method of in-situ polymerization was used to prepare polyaniline/graphene composites with aniline and graphene as raw materials, and ammonium persulfate as oxidant. Polyaniline/graphene, pure polyaniline and graphene were added to HG-54C emulsion respectively to prepare waterborne anticorrosive coatings. Corrosion resistance of the polyaniline/graphene, pure polyaniline and graphite waterbone coatings were analyzed and compared depending on potentiodynamic polarization curve and salt spray test. Structures and microstructures were compared and analyzed with Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Polyaniline was uniformly covered on lamellar structure of graphene to form an oxidative intercalation structure. Corrosion current density was 2.3955×10-7 A/cm2 when the composite material was soaked in 3.5% NaCl solution. Salt spray test showed that corrosion resistance of polyaniline/graphene was superior to that containing pure polyaniline and graphene. Polyaniline/graphene coating has good corrosion resistance, and its corrosion resistance is better than that of pure polyaniline coating and graphene coating.