In　order　to　conduct　intensive　research　on　the　inside　stress-strain　curve　relationship　of　compressed　concrete,　a　novel　relevant　testing　device　was　developed　and　embedded　inside　concrete　specimens　and　we　conducted　conventional　uniaxial　compression　loading　tests　on　concrete　specimens.　Based　on　experimental　data,　combined　with　several　typical　constitutive　equations　of　concrete,　simulation　is　conducted　on　the　experiment.　The　results　show　that　the　core　area　inside　the　concrete　has　good　ductility　compared　to　the　other　parts,　and　the　measured　constitutive　curve　inside　the　concrete　is　reasonable　and　accurate,　which　is　in　good　agreement　with　the　finite　element　simulation　results　based　on　Chinese　standards.　It　proves　that　the　relevant　measurement　methods　have　fine　accuracy　and　applicability,　and　can　be　further　promoted　and　used.　©　Published　under　licence　by　IOP　Publishing　Ltd.