Economic　and　environmentally　friendly　polypropylene　(PP)　fibre　and　polyvinyl　alcohol　(PVA)　fibre　were　found　to　be　beneficial　to　the　strength　of　recycled　coarse　aggregate　concrete　(RCAC),　but　the　effects　in　the　fracture　properties　of　the　RCAC　has　been　overlooked.　This　study　added　PP　fibre　and　PVA　fibre　to　enhance　the　ability　of　the　RCAC　to　resist　crack　instability　expansion.　The　three-point　bending　tests　were　performed　to　compare　the　fracture　properties　of　the　RCAC　with　fibres　and　without　fibre.　The　reinforcement　mechanism　of　fibres　was　analyzed　by　the　single-fibre　pullout　tests　and　scanning　electron　microscopy　tests.　The　experimental　results　indicated　that　fibres　could　not　effectively　increase　the　compressive　strength　of　RCAC　but　the　splitting　tensile　strength　of　RCAC　was　significantly　improved　with　the　increase　of　the　volume　fraction　of　fibres　and　the　optimal　volume　fraction　of　fibre　was　1.5%　PP　fibre.　The　PP　fibre　and　PVA　fibre　both　effectively　improved　the　fracture　properties　of　RCAC　but　acted　in　the　post-cracking　stage　and　the　linear　loading　stage,　respectively.　As　a　concrete　manifestation　of　the　PP　fibre　was　more　effective　in　increasing　the　peak　load,　unstable　toughness,　and　fracture　energy　of　RCAC　than　the　PVA　fibre　while　the　PVA　fibre　was　more　effective　in　increasing　the　initial　cracking　load　and　the　initial　toughness.　The　1.0%　PP　fibre　had　the　best　effect　on　the　fracture　properties,　which　increased　peak　load,　unstable　toughness,　and　fracture　energy　by　47.2%,　42.3%,　and　5500%,　respectively.　The　0.2%　PVA　has　the　best　effect　on　the　fracture　properties　of　RCAC　at　the　stage　before　the　cracks　developed　which　increased　initial　cracking　load　and　initial　toughness　by　25.2%　and　43.7%,　respectively.　In　addition,　the　development　of　cracks　of　RCAC　with　PP　fibre　was　more　tortuous　than　that　of　RCAC　with　PVA　fibre.　A　reinforcement　mechanism　analysis　showed　that　there　were　obvious　diamond-shaped　depressions　on　the　surface　of　PP　fibre　which　provided　mechanical　interlock　to　enhance　the　RCAC.　The　hydrogen　bonds　of　PVA　fibre　also　enhanced　the　RCAC　through　the　hydration　products　attached　to　the　surface　of　the　PVA　but　it　is　weaker　than　diamond-shaped　depressions.　These　results　provided　theoretical　and　experimental　support　for　the　research　gap　of　PP　fibre　and　PVA　fibre　in　RCAC.