To accurately supply a prescribed number of tablets into a bottle.

This component supply device has a vibrating feeder for vibrating a trough T2 supported on a base through a pair of front and back plate springs 11A, 11B by an electromagnet drive part to feed the components. A slant angle of the plate spring 11A on the front side in a component feeding direction to a vertical line is set to be larger than a slant angle of the plate spring 11B on the rear side such that a component feeding speed on the upstream side in the trough T2 is smaller than on the downstream side.