This　study　conducts　push-out　tests　on　eight　geopolymer　concrete　filled　steel　tube　column　specimens　with　varying　design　parameters　to　evaluate　the　effects　of　steel　tube　wall　thickness,　concrete　strength,　and　the　presence　of　welded　longitudinal　ribs　on　the　bond-slip　performance　at　the　interface　between　geopolymer　concrete　and　steel　tube.　The　study　analyzes　the　influence　mechanism　of　chemical　bonding　force,　mechanical　bite　force,　and　friction　resistance　on　bond　strength　and　a　three-stage　bond-slip　constitutive　relationship　is　established.　The　results　indicate　that　steel　tube　strain　increases　with　height,　with　significant　strain　observed　at　the　welding　structure　and　the　fixed　end　of　the　steel　tube.　The　length-to-diameter　ratio,　diameter-to-thickness　ratio,　concrete　strength,　and　construction　measures　of　the　steel　tube　are　identified　as　key　factors　in　enhancing　interfacial　bonding　performance.　The　presence　of　welded　longitudinal　ribs　on　the　inner　wall　of　the　steel　tube　significantly　improves　the　interface　bonding.　The　calculated　bond　strength　ratios,　compared　with　the　test　results,　fall　within　an　11%　margin,　demonstrating　good　agreement.　©　The　Author(s)　2024.