Using　age　adjusted　effective　modulus　(AAEM)　method,　creep　of　concrete　filled　steel　tube　(CFST)　member　was　formulated　considering　of　creep　coefficient　and　aging　coefficient.　Ten　CFST　specimens　were　tested　including　eight　for　creep　and　two　for　shrinkage.　The　experimental　result　was　compared　with　the　computed　result　using　AAEM　in　which　the　creep　coefficient　was　taken　from　calibration　of　ACI　model　based　on　experimental　result　on　sealed　concrete,　and　aging　coefficient　was　supplied　from　relaxation　test　on　sealed　concrete　specimen.　Furthermore,　the　creep　of　CFST　member　was　analyzed　using　author＇s　own　subroutine　to　input　concrete　properties　through　user　programmable　feature　(UPF)　in　ANSYS　software.　Comparison　was　made　on　authors＇　own　experimental　database,　some　existing　experimental　results,　and　results　from　AAEM　and　numerical　analysis.　Finally,　the　conditions　of　applicability　of　AAEM　method　are　put　forward,　and　numerical　approach　to　compute　creep　of　CFST　specimen　is　delineated.