With heavy-duty containers of a container factory as the research object, a parametric model of heavy-duty containers has thus been established by using the secondary development tool (APDL) of ANSYS of the finite element software ANSYS. By using APDL intelligent analysis method, three-dimensional models of different shapes, sizes and attributes can be established by modifying feature parameters, which reduces the repeated modeling of designers and improves work efficiency. Combined with the test bench, a measurement can be achieved of the displacement and stress of heavy-duty containers under various working conditions. The experimental results show that the displacements and stresses under various working conditions meet the qualified standards of ship inspection, up to the stiffness requirement which helps to shorten the design cycle.