In this study, CoCrFeMnNiTi_x HEA coatings with different Ti content were successfully prepared on the surface of 45 steel using laser cladding technology. The microstructure and properties of the coatings were also investigated. The results show that the CoCrFeMnNiTi_x HEA coatings consist of FCC solid solution and TiC particle phases. It also shows that the lattice constant first increases and then decreases as the content of the Ti element increases. The microhardness of CoCrFeMnNiTi_x HEA coatings increases as the content of the Ti element increase. The addition of the Ti element leads to the solution strengthening and second phase strengthening of the coatings. The corrosion mechanism of CoCrFeMnNiTi_x HEA coatings evolves from pitting to intergranular corrosion. In the anodic polarization stage, the segregation of the Ti element intensifies intergranular corrosion. The wear mechanism of CoCrFeMnNiTi_x HEA coatings changes from adhesion wear to oxidation wear and abrasive wear due to the increase in the hardness and averaged temperature during friction. The change in wear mechanism minimizes the friction coefficient of CoCrFeNiMnTi_1.00 coating. The oxidized adhesive layer has a certain protective effect on the surface of the coating. The CoCrFeNiMnTi_0.25coating has the best corrosion and wear resistances.