Taking the pile foundation of second-phase project of Guoyuan Port as the prototype,we carry out the low-cycle repeated loading test of concrete-filled steel tubular column,and analyze the reinforcement rate and concrete strength of different core concrete based on ABAQUS finite element software.The results show that the steel tube of concrete-filled steel tubular column is prone to buckling and even bulges at the bottom of the column.As the thickness of the steel tube increases,the plastic deformation capacity of the concrete-filled steel tube structure is enhanced,which has the advantages of high bearing capacity and good ductility.The plastic deformation and energy dissipation of CFST column model are enhanced by the increase of reinforcement ratio.However,the increase of concrete strength has limited effect on the plastic deformation and energy dissipation of concrete-filled steel tubular column.