The　interactive　buckling　behavior　of　aluminum　alloy　square　tubes,　characterized　by　low　density　and　excellent　corrosion　resistance,　under　axial　and　eccentric　compression　was　comprehensively　investigated.　Eleven　6063-T5　thin-walled　aluminum　alloy　square　tubular　column　specimens　with　different　lengths,　widths,　and　thicknesses　were　designed　to　undergo　axial　and　eccentric　compression　tests.　Subsequently,　the　failure　modes　and　buckling　resistances　were　analyzed.　Finite　element　models,　validated　by　the　experimental　results,　were　employed　for　parameter　analysis　to　further　investigate　the　effects　of　slenderness　ratio,　width-to-thickness　ratio,　and　eccentricity　on　interactive　buckling　resistance.　As　the　slenderness　ratio　increases,　the　influence　of　local　buckling　on　the　resistances　decreases,　and　the　specimen　suffers　overall　buckling　before　the　local　buckling.　Through　a　comparative　analysis　of　the　design　methods　for　aluminum　alloy　structures　in　the　Chinese　code,　the　Eurocode,　and　the　American　code,　it　was　found　that　the　Chinese　code　and　the　Eurocode　yield　relatively　conservative　results,　while　the　method　in　the　American　code　overestimates　the　interactive　buckling　resistance　of　components.　Based　on　the　above　codes,　the　design　formulas　for　axial　and　eccentric　interactive　buckling　resistance　were　modified　to　more　precisely　predict　the　buckling　resistance　of　aluminum　alloy　square　tubes　considering　interactive　buckling　effects.