The non-linear buckling behavior of the outrigger unit of molded pulp pallet under load compression was simulated and analyzed by using finite element software ABAQUS. The simplified models of the outrigger unit were established. Finite element non-linear buckling analysis was carried out on the models with different wall thickness and the force-displacement curves of outrigger units were obtained. The result showed that with increases of wall thickness, the load-bearing capacity of the structural unit increases; the wall thickness range of an outrigger unit mainly determines its load-bearing capacity.