To provide an electromagnetic induction-type vibration power generator in which a magnetic flux of a permanent magnet can be prevented from adversely affecting the inside and outside of the vibration power generator.

A vibration power generator comprises: a cylindrical member; a coil unit made of a nonmagnetic and conductive material which is provided to be movable inside the cylindrical member along the longitudinal direction of the cylindrical member; a first permanent magnet which is fixed in a movable region of the coil unit and is magnetized along the longitudinal direction; and a second permanent magnet which is shorter than the first permanent magnet in the longitudinal direction and is arranged such that its magnetic pole on the side facing the first permanent magnet has the same polarity as that of the first permanent magnet.