The work aims to design a more time-/labor-saving plastic crate. Foldable side-open and plate-inserted plastic crates were designed by Pro/E software. The Ansys Workbench software was adopted for simulation to obtain the stress, strain and deformation of the modular plastic crate in static and dynamic drop process. The maximum stacking stress of the plastic crate was at the bottom of the side plate, and the maximum strain was extremely small. The strain was mainly concentrated on the bottom plate, side plate and connecting shaft, the equivalent stress at the part where the bottom plate and the ground contacted was the maximal, and the maximum equivalent stress of all other parts was small in the angular drop. As the crate design meets the strength requirement, such design scheme is feasible.