A new and improved knockdown pallet structure comprises a relatively flexible base panel which is fabricated from a suitable woven plastic material, such as, for example, polypropylene, and a pair of laterally spaced, longitudinally extending pockets are secured upon undersurface portions of the base panel so as to accommodate rigid support members, which may comprise rigid thermoplastic tubes or pipes, for accommodating the fork tines of a forklift truck when a pallet structure, having a palletized load disposed thereon, is to be lifted and transported. A pair of semi-rigid cross-brace members are respectively pivotally secured at first end portions thereof upon the pallet structure so as to be movable between a first operative position, at which the pair of semi-rigid cross-brace members will be disposed in a longitudinally spaced, laterally oriented mode, and a second position at which the pair of semi-rigid cross-brace members will be disposed in a laterally spaced, longitudinally oriented mode so as to be disposed parallel to the laterally spaced, longitudinally extending rigid support members in order to permit the entire pallet structure to be rolled up, folded, or otherwise knocked-down, for compact storage and transportation purposes.