The　threaded-sleeve　connection　(TSC)　is　a　new　type　of　connection　for　grid　structure,　of　which　the　key　part　situates　at　the　threaded　extended　end.　The　simulation　models　of　TSC　were　established　and　compared　by　ANSYS.　The　compression　mechanical　property　and　stress　distribution　were　analyzed　firstly.　The　performance　of　compression　and　eccentric　compression　were　tested　through　experiments.　The　simulation　results　were　compared　with　test　data　to　verify　the　correctness　of　the　FE　model.　Based　on　the　simulation　and　experimental　results,　the　theoretical　formulas　of　compression　capacity　and　stiffness　of　the　extended　end　were　developed.　It　is　illustrated　that　the　capacity　of　TSC　under　compression　is　about　63.2%　of　that　of　the　pipe　with　same　material,　diameter　and　wall　thickness.　When　subjected　to　large　eccentricity,　the　capacity　of　TSC　decreases　to　about　83.9%　of　the　axial　compressive　capacity.　The　failure　form　of　the　specimens　under　compression　or　eccentric　compression　is　the　buckling　of　the　extended　threads.　The　simulation　results　agree　well　with　the　test　results,　which　illustrates　the　effectiveness　of　the　FE　method,　and　the　theoretical　results　are　also　in　good　agreement　with　the　test　data.　The　TSC　shares　good　compression　performance,　and　the　most　weakness　area　exists　in　the　extended　part　of　the　threads,　the　buckling　of　which　will　lead　to　the　failure　of　the　connection.　©　2016,　Editorial　Board　of　Journal　of　Harbin　Institute　of　Technology.　All　right　reserved.