<p>In order to further improve the surface quality and wear resistance of S355, 1Cr18Ni9Ti austenitic stainless steel coatings were deposited on the surface of heat-resistant S355 steel using laser cladding technology. The coatings were prepared and evaluated using multiple controlled experiments. Microstructural analyses were performed using optical microscopy (OM), x-ray diffraction (XRD), and energy-dispersive spectroscopy (EDS), including their elemental distributions and metallurgical structures, and the reasons for this were analyzed, and SEM was used to analyze the surface morphology of the specimens after the friction experiments. The structure of laser clad 1Cr18Ni9Ti austenitic stainless steel coating consists of cubic crystal system and γ-Fe phase. In the hardness and wear resistance test, the coating shows far better mechanical properties than the substrate, the hardness can reach 2-3 times of the substrate, and the wear resistance coefficient is more stable. This study provides a scientific basis for the optimization of the mechanical properties of 1Cr18Ni9Ti austenitic stainless steel coating on S355 steel, indicating that the laser cladding technology plays a significant role in the optimization of the mechanical properties and wear resistance of the substrate, which makes it feasible for the practical application of laser cladding technology on S355 steel.</p>