The invention provides a double-motor large-drive-force actuator. The double-motor large-drive-force actuator comprises motors, a worm, a worm gear assembly, screws, a limit switch, a bottom shell and an upper cover. An installing groove is formed in the bottom shell. The worm gear assembly and the screws are installed in the installing groove. The bottom shell and the upper cover are each provided with a groove matched with the corresponding screw in shape. The screws are installed in the grooves matched with the screws. The two motors are installed on the left side and the right side of the bottom shell respectively and fixed to the upper cover through the bottom shell, and the two ends of the worm are connected to the two motors respectively. The worm gear assembly is installed below the worm, and the surface of the worm gear assembly is in engaged connection with the worm. Threads are arranged in an inner hole of the worm gear assembly and are in engaged connection with the screws. The two micro-motors are adopted, large drive force can be achieved only through one worm, the size of the actuator is smaller, installation and matching are convenient, and cost is reduced.