<p>The development of a solvent-free, ambient and efficient approach to fabricating anti-corrosion coating has long been a desirable goal. In this work, a novel kind of electron beam cured coating with outstanding anticorrosion property was prepared. Polyaniline-micaceous iron oxide (PANI-MIO) was used as anticorrosion filler, which was prepared by the in-situ polymerization method on the surface of micaceous iron oxide (MIO). It only took several seconds to achieve the complete curing at room temperature and no organic solvent was involved. The curing behavior of PANI-MIO coatings was explored through gel content and double bond conversion rate tests. Combining the active anticorrosive mechanism of PANI and the passive shielding anticorrosive mechanism of MIO, the EB-cured PANI-MIO coatings were endowed with “active + passive” anticorrosion functions and the anticorrosion performance was significantly improved. The effect of the ANI/MIO ratio as well as the PANI-MIO content on the coating property and anticorrosion performance was systematically investigated. At the optimum conditions, the EB-cured composite coating exhibited outstanding anticorrosive performance. The low-frequency impedance value of the coating was still above 10⁹&#xa0;Ω&#xa0;cm² after 45&#xa0;days’ immersion in NaCl solution, which was about two orders of magnitude higher than that of the pure resin coating. In addition, the corrosion protection efficiency was nearly 96%, which was approximately twice that of MIO coatings. Furthermore, for damaged coatings, no obvious corrosion spread was observed at the scratch after 600&#xa0;h of neutral salt spray testing. This work provided a benchmark for the EB curing of coatings for metal corrosion protection.</p>