A method for treating a bacterial infection in a subject by administration of an effective amount of centaurein alone or in combination with a bacteriocide. Also described is a composition containing an effective combined amount of centaurein and a bacteriocide useful for treating a bacterial infection in a subject.本發明係為一種治療細菌感染的方法,其係單獨施予個體一有效量的矢車菊黃酮類或其與殺菌劑之組合。同時,亦描述一種包含有效結合劑量的矢車菊黃酮類與殺菌劑之組合物,應用於細菌感染之治療。