ZrB 2 ceramics, due to their high hardness and high stability, are highly potential wear-resistant reinforcement phases for high-entropy alloys (HEAs). Based on the actual morphology of ZrB 2 within the coating, the effect of ZrB 2 content on the wear resistance of FeCoCrNiAl 0.3 was investigated through experiments and molecular dynamics simulations. The results show that increasing the ZrB 2 content promotes the aggregation of ceramic particles within the coating and improves the surface roughness. Tribological tests indicate that the coating containing 30 % ZrB 2 exhibits the best wear performance, with a hardness of 743.09 HV 1, and the lowest friction coefficient of 0.323. Molecular dynamics simulations reveal that a high ZrB 2 content leads to a more dispersed migration path of high entropy alloy atoms, reducing atomic accumulation, and facilitating the significant proliferation of Shockley dislocations, thereby enhancing the tribological properties of the coating. In summary, when the content of ZrB 2 coating reaches 30 %, it shows the best wear resistance.