An assembled plastic pallet is provided in the disclosure, which includes a panel and a plurality of support legs detachably arranged at a lower side of the panel. A metal reinforcement is embedded in the panel, each of the plurality of support legs is in a cuboid, four sides of each of the plurality of support legs is recessed inward to form a first groove, four sides of each of the plurality of support legs is formed with a reinforcing rib, and the reinforcing rib is smoothly transitioned to a bottom of the first groove with an arc. An assembled plastic pallet provided in this disclosure can be freely assembled as required and has high bearing capacity.