A　total　of　32　push-out　tests　were　conducted　in　this　paper　on　concrete-filled　stainless　steel　square　hollow　section　(SHS)　tubes　with　different　values　of　height-to-width　ratio,　width-to-thickness　ratio　and　concrete　strength.　The　bond-slip　behaviour　of　all　specimens　and　the　strain　distribution　on　the　exterior　of　stainless　steel　tubes　along　the　longitudinal　height　direction　were　carefully　investigated.　Shear　failure　loads　of　bonding　slip　and　the　interface　friction　resistance　generally　decreased　with　more　loading　cycles　of　the　repeated　push-out　test　employed　in　the　same　direction.　It　can　be　concluded　that　70%　of　the　bonding　strength　at　the　interface　was　taken　by　the　friction　force　of　the　interface　elements,　while　the　remaining　30%　of　the　bonding　strength　at　the　interface　was　sustained　by　the　chemical　adhesive　force　and　the　mechanical　interlock　force.　Furthermore,　the　strains　at　the　locations　close　to　the　free　end　and　loading　end　of　the　specimens　increased　with　the　increase　of　the　axial　load,　in　which　the　increase　of　the　strains　at　the　location　close　to　the　free　end　is　much　greater.　On　the　other　hand,　it　is　demonstrated　that　the　height-to-width　ratio　and　the　width-to-thickness　ratio　of　the　stainless　steel　SHS　tube　have　insignificant　influence　on　the　shear　resistance　of　the　bonding　strength　of　the　interface　elements,　which　generally　decreased　with　the　increase　of　the　concrete　strength.　In　addition,　the　current　design　rules　of　concrete-filled　carbon　steel　SHS　tubes　were　found　to　be　inapplicable　to　the　shear　resistance　of　the　bonding　strength　of　concrete-filled　stainless　steel　SHS　tubes.　©　2017　Elsevier　Ltd