Abstract: The chromium element was introduced into Fe-Ni-Mo pre-alloyed powder by adding chromium-iron alloy powder, and then ferrous powder sintering forging steels containing different mass fractions (0, 0.35%, 0.55%, 1.00%, 1.50%) of chromium were prepared by cold pressing sintering, hot forging, quenching and tempering. The microstructure, density, mechanical properties and wear resistance of the steels were studied. The results show that the microstructure of the steel by cold pressing sintering consisted of ferrite and pearlite; after hot forging and qanching, the microstructure of martersite was obtained; after tempering, the microstructure was composed of tempered sorbite. The microstructure of the sintering forging steel with chromium of 0.55wt% was the most uniform. Compared with the steel after cold pressing sintering, the hardness, density, tensile strength and elongation of the sintering forging steel got improved greatly, and wear rate decreased. When the content of chromium was 0.55wt%, the tested steel had the best comprehensive performance, including density of 7.74 g·cm^-3, hardness of 712 HV, tensile strength of 1 310 MPa, elongation of 5.98%, and wear rate of 7.01×10^-13 m³·N^-1·m^-1. The tensile fracture had dimple characteristic, but the macroscopic fracture mode was brittle fracture. The wear mechanism mainly consisted of delamination wear and abrasive wear.