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The TiO₂ coatings were prepared by micro-arc oxidation coupled with a high and low-frequency pulse. The low-voltage and high-frequency pulse promoted the electrodeposition of nano-particles and effectively improved the anticorrosion performance of the coatings. The number of micropores on the surface of the coatings decreased, the porosity of the coatings decreased from 2.72% to 0.896%, the thickness increased to 23.76μm, and the Ti content increased from 30.02% to 42.48%. The high-frequency pulse was applied to the nanoparticle suspension, and the content of Nb increased to 10.62%. The coatings comprised anatase, rutile, Al₂TiO₅, Nb₂O₅, and Nb-Ti compounds. The Nb peak value increases significantly under the high-frequency pulse. The corrosion current density decreased from 7.995×10_-7 ^A/cm₂ ^{to 3.}249×10_-7 ^A/cm₂^.The high-frequency pulse accelerated the deposition of nano-particles into the coatings, and the low-voltage and high-frequency electromagnetic field accelerated the deposition of particles into the positive electrode electrophoresis, thus enhancing the performance of the coatings.