Abstract: An electrocatalytic converter according to the present invention includes a base portion having a fixing portion formed on an outer wall thereof and a terminal insulatedly provided therein and connected to an electrical source; a plurality of outwardly projected heating fins covered with a thin coating of platinum, palladium and rhodium formed on the outer wall of the heating surface; a heating means, integrally connected to the base portion, having a heating surface formed on a wall surface thereof and composed of a catalyst comprising a transition material and a heating means having a resistive exothermic element connected to the element being provided adjacent.