Fe3Al-graphite　solid　self-lubricating　materials　were　prepared　by　melting　method.　The　effects　of　Si　content　on　the　microscopic　structure,　mechanical　and　dry　friction　properties　were　investigated.　The　results　show　that　Si　element　has　an　effect　on　facilitating　carbon　atoms　to　solute　in　Fe-Al-C　liquid　alloy　and　to　graphitize　in　the　process　of　solidification,　which　can　solution　strengthen　the　alloy　matrix.　With　increasing　Si　content,　the　hardness　decreases　and　the　bend　strength　increases　because　the　the　strengthening　effect　of　graphitization.　When　Si　content　exceeds　3.5%(mass　fraction),　the　bend　strength　deduces　dramatically　because　the　solution　of　Si　element　in　Fe3Al　matrix　is　too　much.　The　results　also　show　that　Fe3Al-graphite　alloy　has　good　wear-resisting　and　lubricating　properties.　The　coefficient　of　dry　friction　decreases　with　increasing　area　density　of　graphite,　and　the　wear　rate　reduces　with　increasing　Si　content.　Fe3Al-graphite　solid　self-lubricating　material　with　3.5%　Si　after　annealing　at　900°C　for　15　h　has　good　mechanical　properties,　and　the　wear　rate　is　just　as　1/20　as　that　the　of　spheroidal　graphite　iron.