The　high　carbon　high　speed　steel　(HC-HSS)　was　made　by　self-made　centrifugal　casting　machine　with　various　magnetic　flux　density　(0.　05　-　0.　20　T)　and　at　the　rotational　speed　960r/min.　The　influence　of　magnetic　flux　density　of　electromagnetic　centrifugal　casting　machine　on　microstructure　and　properties　of　high　carbon　high　speed　steel　(HC-HSS)　was　investigated.　The　results　show　that　the　angular,　granular　carbides　of　as-cast　HC-HSS　are＇　well-distributed　in　the　steel　matrix　and　the　eutectic　carbides　decreases　first　and　then　increases　as　the　magnetic　flux　density　increased.　After　heat　treatment,　the　eutectic　carbides　become　thin　and　short.　The　test　specimen　have　high　hardness,　impact　toughness　and　excellent　relative　wear　resistance　when　the　magnetic　field　strength　reaches　to　0.15T.