In　order　to　study　the　mechanical　property　of　the　bolted　beam-column　connection　applied　in　modularized　multi-story　and　high-rise　prefabricated　steel　structure,　the　calculation　method　in　GB　50017-2003　＇Code　for　design　of　steel　structures＇　was　used　to　design　the　connection.　The　static　test,　quasi-static　test　and　finite　element　analysis　were　carried　on　four　connections.　The　static　performance　and　seismic　performance　including　hysteretic　performance,　skeleton　curve,　ductility　performance,　rotational　capacity　and　stiffness　degradation　of　the　connection　were　obtained.　The　result　shows　that　the　weld　quality,　plate　thickness　and　bolt　arrangement　have　great　influences　on　failure　mode　and　many　mechanical　properties　of　the　connection.　The　rotational　stiffness　is　great,　the　bearing　capacity　of　this　connection　is　high,　and　the　ductility　performance,　energy　dissipation　capacity　and　the　plastic　rotation　capacity　is　good　under　the　condition　that　the　welds　between　chord　and　column　base　do　not　prematurely　fracture　and　the　contacting　surface　between　cover　plate　and　chord　don＇t　slip.　Reducing　the　thickness　of　the　chord　and　web　of　truss　girder　will　significantly　reduce　the　bearing　capacity　of　this　connection,　but　it　has　little　influence　on　ductility　performance　and　energy　dissipation　capacity　of　the　connection.　©　2015,　Science　Press.　All　right　reserved.