Concrete-filled　steel　tubular　(CFST)　specimens　with　multi-row　and　multi-column　studs　were　designed　for　push-out　tests,　including　6　specimens　with　studs　and　1　specimen　without　studs.　Key　experimental　parameters　involved　the　circular　space,　the　longitudinal　space　and　the　amount　of　rows　of　studs.　In　the　meantime,　the　finite　element　analysis　software,　ABAQUS,　was　used　to　simulate　the　CFST　push-out　test.　The　numerical　results　coincide　well　with　the　experimental　results.　The　test　results　and　numerical　analysis　show　that　the　load-slip　curve　of　the　specimen　with　multi-studs　consists　of　linear　elastic　stage,　elastic-plastic　stage,　load　descent　stage　and　load　residual　stage.　Along　the　loading　direction,　the　concrete　stress　at　the　back　of　the　stud　is　50.1　MPa~68.8　MPa,　exceeding　the　cylinder　compressive　strength　(f＇c=　50.1　MPa),　so　that　the　concrete　deforms　greatly.　Mises　stress　in　root　is　the　largest　in　all　studs.　The　root　part　reaches　the　ultimate　strength　first　and　then　cut　off.　The　average　shear　bearing　capacity　of　one　stud　decreases　with　the　decrease　in　the　circular　space,　longitudinal　space　and　the　increase　of　rows.　The　computational　formulas　of　three　reduction　coefficients　are　proposed.　To　make　full　use　of　the　shear　performance　and　avoid　concrete　crack　before　stud,　the　circular　and　longitudinal　spaces　should　not　be　less　than　3.4　and　4.4　times　the　stud　diameter,　respectively.　The　analysis　results　indicate　that　the　three　factors:　the　circular　space,　longitudinal　space　and　the　amount　of　rows　are　mutually　independent.　The　shear　bearing　capacity　reduction　factor　can　be　expressed　as　the　multiplication　of　the　three　reduction　coefficients.　©　2017,　Engineering　Mechanics　Press.　All　right　reserved.