The　constitutive　relationship　of　recycled　concrete　is　one　of　the　key　issues　in　recycled　concrete　seismic　design　and　calculation,　and　the　determination　basis　for　which　is　the　complete　stress-strain　curve.　However,　there　are　few　experimental　research　results　on　this　issue.　In　order　to　investigate　the　uniaxial　compressive　stress-strain　constitutive　relationship　of　high　strength　recycled　concrete,　16　high　strength　prism　blocks　with　water-binder　ratio　of　0.　32　and　dimension　of　100mm　X　100mm　x　300mm　were　made　and　the　completed　stress-strain　curves　under　uniaxial　compression　were　tested.　Analysis　was　performed　on　the　influence　of　the　varying　recycled　coarse　aggregate　replacement　percentage　on　high　strength　recycled　concrete　stress-strain　constitutive　relationship.　Results　showed　that,　the　decline　section　of　the　stress-strain　curve　showed　significantly　brittleness,　and　there　was　a　stress　step　for　a　lower　content　of　recycled　coarse　aggregate　concrete.　The　strength　and　elastic　modulus　of　the　high　strength　recycled　concrete　decreased　with　the　increase　of　recycled　coarse　aggregate　ratio,　the　peak　strain　increased　slightly　with　the　increase　of　the　recycled　coarse　aggregate　replacement,　and　the　ultimate　strain　first　increased　and　then　decreased.　The　complete　stress-strain　curves　were　established　and　the　fitting　results　agreed　well　with　the　test　results.