The fatigue and neutral salt spray corrosion resistance for bare and coated high strength steel were investigated in this paper. The results indicated that WC-17Co and WC-10Co4Cr coatings led to significant increase of fatigue resistance compared with the substrate. There were also comparably similar cycles to failure for the bare and the coated substrates even though the stress which was WC-based coatings shouldered was taken into account. The lower cycles to the failure for WC-10Co4Cr coated substrate than those for WC-17Co coated substrate were attributed to embeding of blasted alumina grit on the substrate surface, which resulted in the great decrease of the cycles to failure. Both WC coatings produced no negative effect on the fatigue performance of 300M steel. The neutral salt spray corrosion resistance for 300M steel substrate was significantly improved after coating process, especially for WC-10Co4Cr coating. As a conclusion, HVAF WC-10Co4Cr coated high strength steel exhibited better performances in both fatigue and neutral salt spray corrosion resistance than that of the substrate, and WC-10Co4Cr coating was a better candidate to chrome plating.