Vanadium　was　added　to　Fe-Cr-C　hardfacing　alloy　and　its　effect　on　the　property　of　the　alloy　when　welded　and　reheated　was　studied.　The　hardfacing　layers　were　produced　on　Q235　mild　steel　by　submerged　arc　welding　method.　The　microstructures,　worn　surface　of　the　overlayer　were　examined　by　means　of　optical　microscope　and　scanning　electron　microscopy(SEM).　Abrasive　wear　resistance　and　hardness　were　tested.　The　results　showed　that　heating　process　had　effect　on　the　hardness　of　the　alloy.　The　hardness　of　matrix　decreased　more　than　22%　by　reheating.　The　max　hardness　decreased　37.7%　with　no　vanadium.　But　it　has　little　effect　on　the　hardness　of　primary　carbide　of　which　the　hardness　decreased　only　1.4%-11.3%　by　reheating.　Vanadium　could　increase　the　abrasion　property　of　post-heated　Fe-Cr-C　hardfacing　alloy.　Using　the　loss　weight　of　quenched　45　sample　as　abrasion　test　bench　mark,　the　lative　abrasion　value　of　the　alloy　content　of　0.4%　vanadium　was　1.9.　In　the　same　condition,　that　of　the　alloy　with　no　vanadium　content　was　only　1.3.　The　abrasion　property　increased　46%.