The　performance　of　high-strength　steel　(HSS)　welding　joints　is　crucial　for　tubular　structure　design.　This　paper　investigates　the　hysteretic　performance　of　HSS　square　hollow　section　(SHS)　T　joints　considering　fracture　behaviors.　The　hysteresis　and　tensile　tests　of　the　HSS　SHS　T　joints　and　a　comparative　analysis　of　failure　modes　and　bearing　capacity　are　conducted.　Parameter　analysis　is　conducted　based　on　the　validated　FE　model　considering　fracture　and　elastoplastic　constitutive　relationship　with　a　wide　range　of　parameters　covered,　including　the　cross-sectional　width　ratio　and　the　wall　thickness　ratio　between　brace　and　chord,　and　the　width-thickness　ratio　of　the　chord,　and　the　seam　weld　size　of　the　joint　connection.　The　results　show　that　fracture　behavior　can　affect　the　failure　mode　and　bearing　capacity　of　the　joints,　and　it　cannot　be　ignored　in　the　hysteresis　analysis　process.　The　energy　consumption　capacity　and　the　ductility　coefficients　increase　when　beta　increases　from　0.2　to　1.0,　tau　increases　from　0.3　to　1.0　and　2　gamma　decreases　from　40　to　20.　Meanwhile,　joints＇　failure　modes　and　residual　strength　vary　with　the　above　parameters.　It　is　necessary　to　use　the　damage　fracture　constitutive　model　of　steel　in　numerical　simulation.