The　compressive　strength　data　of　3D　printed　concrete　(3DPC)　in　X　(Print　direction),　Y　(Adjacent　stripes),　and　Z　(Stacked　stripes)　were　collected　and　analyzed　to　evaluate　its　anisotropic　behavior　and　statistical　parameters.　Similar　to　conventional　cast　concrete,　there　is　a　linear　relationship　between　the　compressive　strength　of　3DPC　and　the　binder-to-water　ratio　(B/W).　For　the　normalized　strength　data,　the　average　ratios　of　X/C,　Y/C,　and　Z/C　at　28　days　are　0.87,　0.80,　and　0.82　respectively,　indicating　a　decrease　in　the　compressive　strength　and　anisotropy　compared　to　cast　concrete.　Compared　to　the　coefficient　of　variation　(COV)　of　cast　specimens　mentioned　in　the　specifications,　there　is　an　increase　of　4.3–69　%.　The　weak　interfaces　and　unique　pore　shapes　in　3DPC　interact　to　cause　stress　concentration　and　redistribution　of　internal　stresses,　resulting　in　decreased　compressive　strength,　anisotropy,　and　variability.　This　investigation　can　provide　material　parameters　for　studying　the　structural　performance　of　3DPC　components.　©　2024