The impact-rolling abrasive wear properties of hot rolling high manganese steel of Mn13 were studied under the condition of coal gangue abrasive by the experimental machine of M2000.XRD and SEM were used to investigate the structural transformation and wear mechanism of Mn13 steel.The results show that the hot rolled steel Mn13 reveals the better resistance to impact-rolling abrasive wear properties under the high impact loads.The hardened layer with a certain thickness is formed in worn surface.The hardness and thickness of hardened layer are improved with the increasing of impact loads.The deformation twinning and martensite phase transformation are the main reasons to improve the work hardening and wear resistance of hot rolling high manganese steel of Mn13.At the low impact loads,the drilling and plowing wear are the main wear mechanism,and at the high impact loads,the wear mechanism changes to fatigue fracture and drilling wear.