On　the　base　of　three-point　bending　experiments　of　a　total　of　56　specimens　in　14　groups,　the　influencing　rules　of　steel　fiber,　polyacrylonitrile　(PAN)　fiber,　and　hybrid　steel/PAN　(S/P)　fiber　on　the　fracture　energy　of　self-compacting　concrete　(SCC)　are　investigated　in　this　paper.　The　relative　SCC　specimens　without　any　fiber　were　tested　and　compared　with　the　fiber　reinforced　SCC　to　accumulate　the　increment　ratio　of　fracture　energy.　The　results　show　that　the　fracture　energy　of　SCC　increases　obvious　linearly　with　the　increment　of　steel　fiber.　PAN　fiber　tends　to　be　nonlinearly　improves　the　fracture　energy　of　SCC,　but　not　so　obviously　as　steel　fiber.　As　to　hybrid　S/P　fiber　reinforced　SCC　having　a　constant　content　of　steel　fiber,　the　fracture　energy　increases　nonlinearly　with　the　increment　of　PAN　fiber.　On　the　base　of　experimental　results,　a　calculation　model　of　fiber　reinforced　SCC　is　presented　with　compressing　strength,　maximum　size　of　aggregate　and　influencing　coefficient　as　main　factors.　The　calculating　results　of　suggested　model　are　compared　with　experimental　results　and　excellent　agreement　is　found.