Uniaxial　tensile　test　of　ultra-high　performance　concrete(UHPC)is　a　basic　material　test　to　analyze　its　tensile　properties　and　tensile　constitutive　relationship.　Through　optimization　of　the　shape　and　size　of　the　specimens,the　success　rate　of　the　test　has　been　greatly　improved.　However,due　to　the　difference　in　the　connection　device　and　reinforcement　method,the　success　rate　of　each　institution　is　uneven.　In　order　to　further　ensure　the　success　rate　of　the　uniaxial　tensile　test,the　influence　of　four　common　connection　devices　and　three　reinforcement　methods　on　the　success　rate　of　the　test　were　systematically　analyzed　through　experimental　research　and　numerical　simulation,and　the　optimal　test　scheme　was　selected.　The　results　showed　that　the　in-plane　clamping　device　has　the　advantages　of　reliable　connection　and　simple　operation,which　is　suitable　for　popularization.　However,there　is　a　problem　that　the　size　processing　error　or　micro　deformation　of　the　clamp　leads　to　the　narrowing　of　the　contact　surface　with　the　specimen,intensifies　the　stress　concentration　caused　by　clamping,and　makes　it　impossible　to　control　the　main　crack　to　be　located　in　the　measuring　range;both　flexible　reinforcement　(paste　carbon　fiber　reinforced　polymer)and　rigid　reinforcement　(paste　aluminum　sheet)　of　the　contact　area　between　the　specimen　and　the　fixture　can　effectively　solve　the　above　problems,increase　the　success　rate.　In　addition,the　influence　of　the　aspect　ratio　and　volume　fraction　of　steel　fibers　on　the　damage　constitutive　relationship　of　UHPC　under　uniaxial　tension　was　investigated　by　using　the　optimal　uniaxial　tensile　test　method.　The　damage　evolution　law　of　UHPC　under　uniaxial　tensile　load　was　explored　through　acoustic　emission　(AE)monitoring.　The　damage　factor　was　constructed　using　AE　parameters　(cumulative　counts　ratio),and　the　uniaxial　tensile　damage　constitutive　relationship　of　UHPC　considering　the　influence　of　steel　fiber　was　obtained.　©　2024　Cailiao　Daobaoshe/　Materials　Review.　All　rights　reserved.