A wear resistant natural rubber based nano composite foaming material comprises following components: natural rubber/ ethylene propylene diene monomer (EPDM); white carbon black; solid paraffin; zincoxide; stearic acid; a crosslinking agent; a sulfur promoter; organic modified montmorillonite; and a foaming agent (azodicarbonamide). The foaming material is prepared by following steps: (1) evenlymixing natural rubber/ ethylene propylene diene monomer, white carbon black, solid paraffin, zinc oxide, and stearic acid in an internal mixer; (2) adding the crosslinking agent and the sulfur promoter into the internal mixer, and mixing; (3) adding the organic modified montmorillonite and the foaming agent into the internal mixer, and evenly mixing to obtain a mixture; (4) mixing and pressing themixture obtained in the step (3) to obtain a sheet rubber compound; (5) heating an embedded die of a flat vulcanizing machine, spraying a demoulding agent on the embedded die, and saving the embeddeddie for later use; and (6) adding the sheet rubber compound obtained in the step (4) into the flat vulcanizing machine, carrying out vulcanization under pressure and foaming-moulding, and cooling tothe room temperature to obtain the wear resistant natural rubber based nano composite foaming material. The wear resistant performance and size stability are effectively improved.