In　order　to　study　the　parameters　influence　on　seismic　behavior　of　concrete　filled　steel　tubular　(CFST)　frame　with　bucking-restrained　brace　(BRB),　the　finite　element　analysis　for　CFST　frame　with　BRB　is　studied　in　this　paper,　which　is　performed　under　low　cyclic　loading　using　the　software　of　ABAQUS.　Failure　model　and　skeleton　curve　are　comparative　analyzed　with　the　related　experiment　components,　verifying　that　the　finite　element　simulation　of　the　CFST　frame　with　BRB　is　effective.　By　changing　the　axial　compression　ratio　of　the　column(n)　and　the　steel　ratio(α)　of　the　column　section　respectively,　the　effect　of　the　structural　parameters　on　the　seismic　behavior　of　the　CFST　frames　with　BRB　had　been　studied.　The　results　shows　that:　with　the　increase　of　steel　ratio　of　the　column　section,　the　lateral　ultimate　strength　and　the　initial　stiffness　of　the　frame　get　higher,　the　lateral　load(P)　versus　lateral　displacement　(Δ)　hysteresis　curves　of　the　frame　get　plumper,　and　the　energy　dissipation　of　BRB　remain　basically　unchanged;　With　the　increase　of　axial　compression　ratio　of　the　column,　the　lateral　ultimate　strength　and　the　hysteretic　behavior　of　the　frame　become　low,　whilst　the　energy　dissipated　by　the　BRB　get　higher.　©　(2012)　Trans　Tech　Publications,　Switzerland.