This study systematically investigated the effect of TiC ceramic particles with two different sizes on the microstructure, corrosion, wear and cavitation erosion (CE) resistance of FeCoCrNiTi high-entropy alloy (HEA) coatings prepared by laser cladding. The results showed that all the coatings exhibited a good metallurgical bonding with the substrate, with no visible interfacial defects. The HEA coating containing TiC ceramic particles mainly consisted of face-centered cubic (FCC), body-centered cubic (BCC) and TiC phases. The FeCoCrNiTi HEA coatings reinforced with fine TiC particles significantly refined the grain size from 38.03 μm to 18.11 μm compared to the TiC-free coating, and the TiC particles exhibited spherical shape and were uniformly dispersed in the matrix for the coating with F-TiC particles. The introduce of TiC ceramic particles significantly enhanced the microhardness properties of the coatings, and the coating with F-TiC particles displayed high microhardness and stable hardness distribution. The specific wear rate was reduced by 34.3 % for the coating with C-TiC particles and 61.5 % for the coating with F-TiC particles compared to the TiC-free coating. The coating with F-TiC particles exhibited the highest corrosion resistance as indicated by the most positive E corr, the lowest I corr and the highest R ct . After 15 h CE, the coating with F-TiC particles exhibited displayed the lowest cumulative mass loss, which can be attributed to the refined grains and finely dispersed TiC ceramic particles. The F-TiC-reinforced HEA coating shows a promising potential in the application of flow passage components due to its great wear and CE resistance.