To　explore　the　behavior　of　ultra-high　strength　concrete　filled　steel　tubular　(UHSC-FST)　lattice　short　columns　under　eccentric　compressive　loads,　experimental　analyses　on　four　specimens　and　276　finite　element　models　using　ABAQUS　were　conducted.　The　study　focused　on　the　effects　of　steel　tube　wall　thickness,　concrete　strength,　steel　tube　strength,　and　load　eccentricity　on　failure　modes,　load-displacement　curves,　and　ultimate　load-bearing　capacity.　Results　showed　that　for　columns　with　minor　eccentricity-induced　compressive　failure,　the　reduction　coefficient　of　ultimate　load　capacity　has　a　weak　correlation　with　the　parameters.　However,　for　columns　with　significant　eccentricity-induced　tensile　failure,　the　reduction　coefficient　increases　with　steel　tube　thickness　and　strength　and　decreases　with　concrete　strength.　The　center-to-center　distance　of　the　columns　has　a　minor　effect.　Based　on　these　findings,　a　comparative　analysis　of　existing　standards　was　conducted,　leading　to　the　development　of　an　accurate　method　for　calculating　the　ultimate　load-bearing　capacity　of　eccentric　CFST　lattice　columns.　This　method　is　applicable　to　various　cross-sectional　dimensions,　material　strengths,　and　steel　tube　wall　thicknesses,　with　calculation　errors　within　10　%,　ensuring　it　meets　engineering　precision　requirements.　©　2024　Institution　of　Structural　Engineers