An effective and excellent method and apparatus for catching fleas which is safe for the living environment of human beings and can attract and capture fleas present in the living space of human beings with high efficiency. The method comprises emitting light effective for attracting fleas from a light source, applying the emitted light to a flea-catching region so that the illuminance is high enough to attract fleas even at a place away from the end of the catching means at a distance of maximum movement in one jumping of the flea, and catching the fleas thus attracted by the catching means. The apparatus comprises a light source which can emit light effective for attracting fleas and a catching section disposed on a flea-catching region and including a sticky surface that inclines downward from the side where the light source is installed, and is characterized in that light from the light source is applied to a flea-catching region so that the illuminance is high enough to attract fleas even at a place away from the end of the catching means at a distance of maximum movement in one jumping of the flea.