Abstract: A radical generating system integrates a bubble generating means, an ozone generating means, and a radical changing means. In the radical generating system, the bubble generating means generate air for generating air bubbles and pumping. The ozone generating means applies high voltage to the air bubbles and ozone introduced from the bubble generating means in order to produce ozone. The radical changing means changes the ozone which is introduced from the ozone generating means into a first active oxygen radical. The housing has the bubble generating means, the ozone generating means, and the radical changing means all formed integrally. The radical generating system sterilizes bacilli such as bacteria, viruses, mold, fungi, or algae which live in the water or air. The radical generating system also improves washing effect of a washing machine by oxidizing and bleaching actions of radicals.