A method for manufacturing a ceramic electronic component capable of preventing degradation of the self alignment property and product characteristics due to absorption of flux into pores of a ceramic element assembly during soldering in mounting and a ceramic electronic component. In the method, a ceramic element assembly is subjected to an oil-repellent treatment by using an oil-repellent agent containing a polyfluoropolyether compound as a primary component and hydrofluoroether as a solvent, so as to avoid absorption of the flux by the ceramic element assembly.