This　study　investigates　the　effect　of　titanium　and　nitrogen　elements　on　the　microstructures　and　wear　behaviors　of　medium　carbon　Fe-B　cast　alloy.　The　as-cast　microstructures　of　Fe-B　cast　alloy　consist　of　the　eutectic　boride,　pearlite,　and　ferrite.　Moreover,　the　as-cast　eutectic　boride　structures　are　greatly　refined　when　titanium　and　nitrogen　are　added.　The　boride　area　fraction,　average　boride　area,　Rockwell　hardness,　etc.,　are　also　investigated　systemically.　The　wear　behaviors　of　medium　carbon　Fe-B　cast　alloy　are　studied　by　a　three-body　abrasive　wear　tester.　The　results　show　that　the　wear　weight　loss　of　Fe-B　cast　alloy　with　titanium　and　nitrogen　elements　is　lower　than　that　of　the　ordinary　Fe-B　cast　alloy.　Meanwhile,　the　wear　mechanism　of　Fe-B　cast　alloy　with　different　titanium　and　nitrogen　concentrations　is　described　and　analyzed.