The present invention provides a pallet, which includes a base board and secondary boards movably coupled to the base board with coupling axles arranged therebetween. Each coupling axle includes a base from which an extension section extends. The extension section forms a plurality of flexible engagement keys. The base board forms receiving sections corresponding to the bases and track channels corresponding to the extension sections. Each track channel forms therein a plurality of groups of retention slots corresponding to the flexible engagement keys. The bases are respectively received in the receiving slots and movable in the receiving slots. The engagement keys are receivable in and retained by the retention slots to retain the coupling axles in the base boards. The extension sections have free ends respectively fixed in the secondary boards to movably couple the secondary boards to the base boar.