Abstract: To address the issue of surface wear susceptibility of 45 steel during service, laser cladding technology was employed to fabricate FeCoCrNiTi_x(x=0, 0.5, 1.0, 1.5, molar ratio) high-entropy alloy coatings with different Ti contents on its surface.The microstructure and phase composition were systematically characterized through X-ray diffraction(XRD) and scanning electron microscopy(SEM). Moreover, microhardness was investigated through microhardness testing and the wear resistance was comprehensively evaluated by reciprocating sliding wear experiments. Results show that the FeCoCrNi coating primarily consists of columnar grains formed by a face-centered cubic(FCC) solid solution. With the addition and increase of Ti content, the microstructure of FeCoCrNiTi_x coatings is refined, and body-centered cubic(BCC) solid solutions, R-phase (Ni-Ti intermetallic phases) and Laves phases(Co-Ti intermetallic phase) are formed simultaneously. As the Ti content rises, the laser-clad FeCoCrNiTi_x coatings exhibit enhanced surface hardness, reduced friction coefficients and improved wear resistance. Notably, the FeCoCrNiTi_1.5 alloy coating achieves has the highest surface hardness of 765 HV0.2 and superior wear resistance, with its wear mechanisms dominated by abrasive wear and fatigue spalling wear, along with slight oxidative wear.