Abstract: After adding 2%, 4%, 6% and 8% (mass fraction, below the same) CeO₂ powder to the zincizing agent composed of zinc powder, ammonium chloride powder and aluminum oxide powder, Q235B steel plate was zincized by powder embedding zincizing method at 440 ℃ for 5 h. The effects of CeO₂ addition amount on the microstructure, friction and wear properties and electrochemical corrosion resistance of the sherardizing layer were studied. The results show that there were a few vertical cracks in the sherardizing layer under different addition amounts of CeO₂. With the increase of CeO₂ addition amount, the number of cracks decreased and became finer, but when the CeO₂ addition amount exceeded 4%, the cracks became more and coarser. The structure of the sherardizing layer with 4% CeO₂ addition was the densest, the cracks were the least and the finest, and the quality was the best. The surface of the sherardizing layer was mainly FeZn₁₅ phase, and the content of FeZn_8.87 and Fe₃Zn₁₀ phases increased with the increase of CeO₂ addition amount. With the increase of CeO₂ addition amount, the microhardness of sherardizing layer increased, but the excessive CeO₂ led to uneven distribution of hardness, and the hardness distribution under 4% CeO₂ addition was the most uniform. With the increase of CeO₂ addition amount, the average friction coefficient and wear mass loss of the sherardizing layer first decreased and then increased, and the wear mechanism was mainly adhesive wear, with slight oxidative wear and abrasive wear. The average friction coefficient and wear mass loss under 4% CeO₂ addition were the smallest, and its degree of adhesive wear was the lightest, showing the best wear resistance. With the increase of CeO₂ addition amount, the free-corrosion current density of sherardizing layer first increased and then decreased and then increased again, and the capacitive arc radius first decreased and then increased and then decreased. The free-corrosion current density under the addition of 6% CeO₂ was the smallest and the capacitive arc radius was the largest, showing the best corrosion resistancee.