The　finite　element(FE)　software　is　used　to　simulate　concrete-filled　steel　tubular(CFST)　columns.　Based　on　the　existing　experimental　data,　the　model　is　verified.　The　parameters　studied　include　axial　load　ratio　and　shear　span　ratio,　and　the　difference　of　seismic　performance　between　circular　CFST　column　and　square　CFST　column　under　the　condition　of　equal　steel　ratio　is　compared.　The　results　show　that　with　the　decrease　of　axial　load　ratio,　the　hysteretic　curve　is　plumper　and　the　seismic　performance　is　more　stable.　With　the　decrease　of　shear　span　ratio,　the　horizontal　bearing　capacity　of　the　specimen　increased　significantly,　but　the　cumulative　damage　effect　was　more　significant.　The　simulation　results　also　show　that　when　the　steel　ratio　is　identical　for　circular　and　square　CFST　columns,　the　circular　CFST　column　has　superior　seismic　performance.