Regarding the calculation of combinatorial structure of sheet piles and tubular piles, different analysis methods are compared through finite element analysis software SAP2000 and PLAXIS, the bending moments, axial forces, shear forces and displacements are obtained, these results and the reasons for the differences are analyzed. The results show that the calculation model of SAP2000 will result in a smaller calculated internal force, because it overestimates the soil support to sheet piles. While the PLAXIS 2D will result in a bigger calculated internal force, because it ignores the deformation of tubular piles. The internal force calculation results obtained by using the iterative calculation model of the two software combined are close to the results produced by PLAXIS 3D, which shows that the results of the above method are consistent with the actual situation.