Abstract: The hardfacing alloy of martensitic stainless steel added nitrogen as alloying element was made,and the microstructure and high-temperature wear-resistance was also studied.It is found that the hardfacing alloy has two main phases of martensite and carbonitrides.The high-temperature wear mechanism between hardfacing alloy of the martensitic stainless steels and the low-carbon steel was abrasive wear because the effect of oxide formation on the surface of the low-carbon steel.The oxide was sticking on the surface of hardfacing alloys and increasing the abrasive wear damage.The results showed that carbonitride particles distributed homogeneously in the hardfacing alloy and had a good strengthening effect on the hardness and high-temperature wear resistance.