Based　on　the　construction　characteristics　of　concrete-filled　steel　tubular　(CFST)　arch　bridge,　addictives　were　proposed　to　improve　its　workability.　The　research　on　the　influence　of　addictives　on　the　creep　deformation　is　carried　out　for　the　axially　compressed　CFST　members　under　long　term　load.　The　results　show　that　the　creep　deformation　of　CFST　members　increases　more　than　10%.　Age-adjusted　Effective　Modulus　Method　(AEMM)　is　adopted　to　calculate　the　deformation　of　members　by　four　creep　models　i.e.　CEB-FIP　78,　CEB-FIP　90,　ACI　209R　and　B3　models.　Of　four　creep　models,　ACI　209R　is　the　relatively　best　for　predicting　the　creep　deformation　of　CFST　members　under　long　term　load　in　the　first　300　days.