The utility model discloses a multifunctional tool for cleaning carbon electrodes, including a flange connecting plate, a first motor, a bearing sleeve, and a first main shaft. The upper end of the flange connecting plate is mounted on a mechanical arm, and the first motor is fixedly mounted on the lower end of the flange connecting plate. A bearing sleeve is provided below the first motor, and the bearing sleeve is fixed together with the flange connecting plate through a tie rod. The upper end of the first main shaft passes through the bearing sleeve and is connected with the first motor, and the lower end of the first main shaft is fixedly provided with a first spring, and the lower end of the first spring is connected with the main knife. The utility model saves labor cost, improves production efficiency, reduces the harm of dust to personnel, makes up for the lack of tools in the industry, and is installed on a mechanical arm, which can automatically clean the carbon electrodes in all aspects.