An exhaust emission control device with less electricity consumption comprises a cylindrical outer electrode 7 extending in a direction of flow of exhaust G, a plurality of inner electrodes 5 and 6 constituted by electrically conductive filters capable of capturing particulates and aligned in the direction of flow of the exhaust G within an outer electrode 7, captured particulate amount estimating means 2 for estimating captured particulate amounts of the respective inner electrodes 5 and 6 and an electric discharge controller 3 for supplying electric power for generation of electric discharge to the outer electrode 7 and any of the inner electrodes 5 and 6 on the basis of calculated values of the estimating means 2.