Abstract: In the study of wear resistance of laser cladding coatings of cobalt-based alloy on components within nuclear reactors, understanding the evolution of the wear surface is particularly important. In order to improve research efficiency and enhance the analysis of the evolution mechanism, a numerical prediction method based on a generalized three-dimensional finite element model was employed. Three sets of samples were prepared to verify the model. The results show that, under the condition of micrometer-scale friction depth, the finite element simulation results are basically consistent with the experimental results. The simulation error of wear depth is 6.1%, the maximum prediction error of wear depth is 5.7%, the maximum prediction error of wear width is 9.3%, and the cross-sectional profile of the wear scar is basically consistent.Sixteen sets of simulation data are analyzed, and it is found that the wear depth is influenced by the interaction of hardness H and friction coefficient μ, showing a decreasing trend as H increases and μ decreases overall.