Abstract: Hardfacing alloys serve as one of the effective ways to enhance the impact wear resistance of high-manganese cast steel.Vanadium addition in existing iron-based hardfacing alloys is relatively low. In this work, several Fe-Cr-C-V hardfacing alloys with high V content were designed to investigate the effects of Cr and V contents on the amount and distribution of hard phases M₇C₃ and VC,as well as their influence on impact wear resistance. In this study, five Fe-Cr-C-V hardfacing alloys with different Cr and V contents were fabricated using plasma surfacing. The microstructure of the hardfacing alloys was characterized using optical metallographic microscope, scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy(EDX). The fraction of carbides in the alloy system was calculated using JMatPro software, and the impact wear resistance of hardfacing alloys was evaluated through hardness testing and impact wear experiments. The primary strengthening phases in hardfacing alloys were (Fe,Cr)₇C₃ and VC carbides. VC exhibited a spherical morphology with a size of 2-5 μm, exhibiting a fine and dispersive distribution. (Fe,Cr)₇C₃ exhibits a dendritic morphology and interlocks with one another to form a network structure. Carbide content was calculated by JMatPro software, indicating that the predominant carbides were MC and M₇C₃, resulting in optimal impact abrasive wear resistance when the V content ranged from 14.0% to 15.0%. When the V content was 15.0%, the hardness of the hardfacing layer reached 58.4HRC, and the mass loss was minimised under an impact energy of 5 J. The impact wear morphology was characterised by shallow ploughing grooves, minor spalling pits, and a small amount of embedded fine particles.