To　study　the　differences　of　flexural　performance　of　high-strength　recycled　concrete　slabs　and　high-strength　ordinary　concrete　slabs,　four　full-scale　high-strength　recycled　concrete　slabs　and　two　high-strength　ordinary　concrete　slabs　comparison　tests　were　carried　out.　Recycled　concrete　coarse　aggregate　replacement　rate　was　100%　and　the　fine　aggregate　was　natural　sand.　The　design　strength　grade　of　concrete　for　all　specimens　was　C65.　The　loading　method　was　three　points　one-way　repeated　loading.　The　cracking　strength,　yielding　strength,　ultimate　strength,　deflection,　crack　and　damage　process　were　studied.　Results　show　that　comparing　with　the　high-strength　ordinary　concrete　slab,　the　flexural　failure　process,　cracking　strength　and　ultimate　strength　of　the　high-strength　recycled　concrete　slab　are　similar　but　its　midspan　deflection　is　slightly　larger.　When　using　the　steel　bar　truss　construction,　cracks　can　be　restricted　by　steel　bar　truss　after　slabs　crack　and　the　ultimate　load,　late　stiffness　and　ductility　can　be　increased.　The　bearing　capacity　of　recycled　concrete　slabs　can　be　calculated　using　the　method　in　the　code　for　design　of　concrete　structures　but　reduction　factor　should　be　considered　according　to　recycled　coarse　aggregate　rate,　in　order　to　consider　the　difference　of　the　long　term　behavior　and　short　term　test　behavior.