Abstract: Mn13 high manganese steel was alloyed by adding W and RE. The impact wear behavior of test steel was studied by MLD-20C dynamic load test machine under 4 J load, and which was compared with Mn13 steel. By means of OM, SEM, Vickers hardness tester, tensile test and pendulum impact test, the microstructure, mechanical properties, wear surface hardness and subsurface gradient hardness of the test steel were analyzed. The results show that, at the early stage of impact wear, the surface hardness of austenite matrix is not high, the degree of work hardening is not enough, the depth of abrasive pressing is deep, and the furrows and pits of different sizes are formed. After the impact wear time is prolonged, the surface hardness of the material increases rapidly while the surface plasticity decreases. Under the action of repeated friction of quartz sand, the material is deposited along the furrow to both sides, resulting in the initiation and expansion of cracks and the appearance of block fall off. At this time, the wear mechanism is mainly fatigue wear. The addition of W and RE changes the distribution state and morphology characteristics of precipitates and inclusions in high manganese steel, refines the grains, reduces the size of precipitates, effectively improves the strength and hardness of the material, and thus improves the wear resistance of the material.