Medium-manganese steel (MMS) exhibits excellent conventional wear resistance, but its work-hardening ability is limited, resulting in brittle spalling and decrease its wear resistance under high load wear conditions. This study innovatively adopted laser cladding to prepare a MMS coating capable of sustained hardening under high load wear conditions. It analyzed the phase composition and microstructure of MMS coating. investigated the friction and wear properties of the coating under different wear loads and wear durations with a counter-ball made of Al 2O 3. The research results indicate that the deformation hardening mechanism of the coating is primarily dominated by Transformation Induced Plasticity (TRIP), with Twining Induced Plasticity (TWIP) providing synergistic strengthening. When the wear load was increased to 150 N, the strain hardening performance of the coating was fully exerted. At this point, the hardness of the wear track reached as high as 779.02 HV 0.1, while the hardness of the coating before wear was approximately 299.51 HV 0.1-it indicates that the MMS coating has excellent strain hardening capability. This study proposes the preparation of wear-resistant coatings using laser cladding MMS, which will provide a new solution to address the issue of insufficient wear resistance of MMS under high-stress conditions, a problem caused by its inadequate strain hardening capability.