The invention discloses a remelting device for waste aluminum products. The remelting device comprises a mounting frame, an outer shell, a heat-preservation inner layer, a heating coil, an inner shell, a bottom box, a scraper, supporting frame, a stretching hydraulic rod, a mounting shaft and a mill knife, the outer shell is rotationally mounted in the mounting frame, the heat-preservation inner layer is mounted in the outer shell, the heating coil is mounted on the inner side of the heat-preservation inner layer, the inner shell is mounted on the inner side of the heating coil, a dischargingnozzle is arranged at the top end of the inner shell, and the bottom box is arranged at the bottom of the outer shell. In the process of heating smelting, a second servo motor works to drive a drivingwheel to rotate, gears are in engaged transmission to drive a driven wheel to rotate, thus the inner shell connected with a rotary shaft is driven to rotate in the outer shell, it is ensured that theinternal waste aluminum products are evenly heated during heating, the smelting and temperature-increasing efficiency of the waste aluminum products is ensured, and the inner wall of the inner shellcan be cleared in time to ensure normal operation of subsequent material smelting.