To　study　the　influencing　factors　and　regularities　of　the　torsional　behavior　of　air-cooled　concrete　pipe　columns　under　the　press-bending-shear-torsion　action,　the　torsional　behavior　of　existing　air-cold　concrete　tubular　columns　was　studied　in　this　paper.　The　finite　element　model　was　established　and　verified　by　the　existing　test　results,　The　effects　of　wall-to-diameter　ratio,　stirrup　reinforcement　ratio,　concrete　strength,　longitudinal　reinforcement　ratio　and　slenderness　ratio　on　the　torsional　behavior　of　concrete　tubular　members　under　the　press-bending-shear-torsion　action　were　analyzed,　and　the　response　surface　method　was　used　to　study　the　significance　and　interaction　of　the　above　five　influencing　factors.　It　is　found　that　the　torsional　bearing　capacity　of　concrete　pipe　string　increases　with　the　increase　of　wall　diameter　ratio,　and　concrete　strength　and　longitudinal　reinforcement　ratio,　and　the　torsional　ductility　increases　with　the　increase　of　the　wall　diameter　ratio　and　the　longitudinal　reinforcement　ratio.　The　all　single　factor　reactions　are　significant,　the　effect　of　slenderness　ratio　is　the　most　significant.　The　interactions　between　wall　diameter　ratio　and　concrete　strength,　wall　diameter　ratio　and　slenderness　ratio,　and　concrete　strength　and　slenderness　ratio　are　the　most　obvious.　Finally,　this　paper　suggested　the　important　factors　that　need　to　be　considered　in　the　design　of　concrete　pipe　column.　©　2019,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.