The invention provides a tray for workpiece cleaning. The tray comprises a tooling plate, a base used for supporting the tooling plate, supporting blocks and positioning pins used for fixing the workpieces; a guide post used for positioning the tooling plate is arranged on the base, a central hole used for the guide post to pass through is arranged in the tooling plate, the supporting blocks are arranged on the tooling plate, the positioning pins penetrate the supporting blocks in a threaded manner, and a plurality of through holes used for drainage are arranged in the tooling plate. The workpieces are fixed on the tooling plate through the positioning pins, the tooling plate is placed on the base, the workpieces are cleaned by spraying above the tooling plate, the through holes are arranged in the tooling plate, and supporting ribs are arranged on the base, so that drainage is facilitated, and water accumulation in the tray is effectively prevented. The tray can drive a gear to rotate through moving of the rack, so that the base and the tooling plate can be driven to rotate, the workpieces fixed on the tooling plate can be automatically and all-dimensionally cleaned, thorough cleaning is guaranteed, and dead corners in cleaning of the workpieces are removed.