Abstract: The influence of floor elastic modulus on the mechanical properties of container bottom structure is explored in this paper. Taking the bottom structure as the research object, by establishing the mechanical model and the structural deformation coordination condition, the maximum deflection, maximum stress and maximum shear stress of the bottom structure under different elastic models are calculated. The results show that with the increase of the elastic modulus of the floor, the transfer force, deflection and stress of the bottom beam decrease, while the stress of the floor decreases, and the floor shear stress remains unchanged. Therefore, the elastic modulus of the floor is negatively related to the transmission force, deflection, and bottom beam stress, and positively related to the floor stress, and it has nothing to do with the floor shear stress.