The present invention relates to an arc extinction brush, comprising a solid mixture brush body, wherein, the solid mixture brush body consists of a solid lubricant, wax, and a fast film formation substance; the solid lubricant is any of tin, lead, indium, cadmium, silver and oxides thereof; the fast film formation substance is any of molybdenum disulfide, tungsten disulfide, silver iodide, lithium carbonate, barium carbonate or sodium silicate. The present invention also comprises a method of using the arc extinction brush to eliminate electric arc of brushes for generators. The arc extinction brush is used to replace a brush to participate in motor operation and is matched with the operation of eliminating a bad oxide film, and after the arc extinction brush is repeatedly put into operation, the arc extinction brush can help form a good oxide film, so as to eliminate electric arc of brushes for generators and to reduce the sliding friction and self-vibration of brushes.