In situ tungsten particle reinforced Fe-Al-Cr composites were synthesized by laser induced sintering using Fe50-x/2Al50-x/2Crx (x=4, 8, 12, 16) 1wt% pct W powders. The microstructure and properties of the synthesized alloy with various Cr content were studied. By means of the observation of OLYMPUS4000, XRD, hardness test, abrasion test and corrosion resistance, studied the different Cr content for sintered alloy organization and the influence of the properties.The results showed that the sintered alloys were mainly consisted of Fe3Al, Al2O3, AlCrFe2, Cr2O3 and W phases. The needle-like microstructure is fine and good dispersed, while the abrasion rate is the lowest, about 0.38mg?mm-2, when Cr content is 8%. The hardness and correction resistance of the alloy is the best, when the content of Cr is 12%. The value of hardness, corrosion potential and passivation current density is 1145HV, 327.643mV and 1.044mA?cm-2, respectively.