Experiments　on　CFST　latticed　columns　subjected　to　eccentric　loads　are　carried　out.　The　parameter　is　specimen＇s　slenderness　ratio.　Test　results　indicate　that　the　critical　load　decreases　with　the　increase　of　slenderness　ratio.　Compression　is　dominated　in　longitudinal　members　and　hoop　effect　of　steel　tube　to　concrete　core　takes　effect　in　nonlinear　phase.　The　forces　in　lattice　tubes　are　very　small　and　they　are　in　elastic　phase　all　the　time.　Strains　of　longitudinal　elements　near　the　joints　are　very　large　and　it　finally　leads　to　the　failure　of　the　specimens.　The　forces　in　lattice　tubes　are　very　small　and　the　material　is　in　elastic　phase　during　the　whole　process.　CFST　latticed　columns　has　the　behavior　of　tube　structure　to　some　extent,　although　concrete　is　filled　in　the　longitudinal　tubes.