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The invention discloses a method and device for treating air pollution in rubber asphalt production, and belongs to the technical field of environmental protection. According to the method, three-stage treatment is adopted, and the first-stage treatment is cooling and waste removal treatment: flue gas is fed into a reaction kettle, so that harmful substances in the flue gas are dissolved while the flue gas is cooled; the secondary treatment is plasma treatment, a strong electric field is used for generating plasmas, smoke pollutant molecules are attacked, chemical bonds of the smoke pollutant molecules are destroyed, and finally the smoke pollutant molecules are converted into harmless small molecules; and the third-stage treatment is to reduce the total emission amount of harmful gas in production. The device solves the problem of air pollution in the rubber asphalt production process, and has the characteristics of low pollution to the surrounding environment, low energy consumption and high asphalt mixing speed.