In　order　to　study　the　flexural　strength　of　concrete　with　different　replacement　percentage　of　recycled　coarse　aggregate,　the　test　were　designed　and　carried　out　on　33　concrete　specimens　whose　replacement　percentage　of　recycled　coarse　aggregate　are　0%,　10%,　20%,　30%,　40%,　50%,　60%,　70%,　80%,　90%,　100%,　respectively.　According　to　the　experiment,　the　flexural　strength　of　recycled　aggregate　concrete　(RAC)　is　obtained,　and　the　influence　of　replacement　percentage　of　recycled　coarse　aggregate　on　the　flexural　strength　is　analyzed.　After　the　flexural　test,　the　same　specimens　were　used　for　compression　test,　and　the　cubic　compressive　strength　is　also　acquired.　The　results　show　that　the　flexural　strength　and　cubic　compressive　strength　of　the　recycled　aggregate　concrete　approximate　to　those　of　normal　concrete.　The　ratio　of　flexural　strength　to　cubic　compressive　strength　is　0.12　for　recycled　aggregate　concrete.　©2010　IEEE.