The invention discloses an environment-friendly desulfurization extruder of regenerated rubber. The environment-friendly desulfurization extruder comprises a base, an upper motor, an upper gearbox, a charging device, a double-screw feeding device, cylinder screws, a transitional conveying device, a double-screw cooling extruding device and a waste recovery device, wherein the upper motor and the upper gearbox are installed on the left side of the base, the double-screw feeding device is installed at the right end of the upper gearbox, the charging device is installed at the upper part of the double-screw feeding device, the multiple cylinder screws are installed on the right side of the double-screw feeding device, the transitional conveying device is installed at the right ends of the cylinder screws, the double-screw cooling extruding device is installed at the lower part of the transitional conveying device, and the waste recovery device is installed in the middle of the base and communicates with the interiors of the cylinder screws through pipelines. A distribution box, a lower gearbox and a lower motor are sequentially installed on the left side of the double-screw cooling extruding device, the distribution box, the lower gearbox, the lower motor and the double-screw cooling extruding device are installed on a sliding rail through supports, and the sliding rail is located on the base. According to the environment-friendly desulfurization extruder, dynamic installation is realized.