The FeCrBSi coating was prepared on the surface of AISI 1045 steel by supersonic velocity plasma spraying method,and then treated by low temperature ion sulfuration to obtain the solid lubrication composite FeCrBSi/FeS layer.SEM was used to observe the surface,cross-section and worn scar morphologies.The element components on the cross-section were analyzed by X-ray energy spectrometer.XRD was utilized to analyze the phase structure.The nano-hardness and elastic modulus of composite FeCrBSi/FeS layer were surveyed by the nano-indentation tester.The results showed that the surface of FeCrBSi/FeS layer was comparatively compact,with low porosity.The FeS layer was about 2μm thick,no obvious transition layer could be found.The main phases of the layer were α-Fe and FeS.The average value of nano-hardness and elastic modulus were 9.03GPa,170.94GPa,respectively.The tribological properties were investigated on a ball-on-disk wear tester under dry and oil lubrication conditions.The results showed that the friction coefficient and wear scar depth of the composite FeCrBSi/FeS layer were always lower than those of FeS film and 1045 steel under dry and oil lubrication conditions.Especially under dry condition,the friction coefficient and worn depth were only 1/9 and 1/20 of those of the 1045 steel substrate.The worn surface of composite FeCrBSi/FeS layer was relatively compact and smooth.The result showed that sulfur still existed on the worn surface of composite FeCrBSi/FeS layer after sliding,which indicated that the composite FeCrBSi/FeS layer could take the friction-reduction and wear-resistance effect continuously.Therefore the composite FeCrBSi/FeS layer had excellent Friction-reduction and anti-wear properties.It is properly used under low load and dry condition.