To provide a vibration power generator which can stably and efficiently generate electric power.

A vibration power generator 1 includes a first assembled magnet 12, a second assembled magnet 14, a first assembled coil 16 and a second assembled coil 18 within a casing 11. In the first assembled magnet 12 and the second assembled magnet 14, a plurality of permanent magnets are disposed so as to have a homopolar opposing structure. The first assembled magnet 12 is installed around the second assembled magnet 14. The first assembled coil 16 is installed outside the first assembled magnet 12. The second assembled coil 18 is installed between the first assembled magnet 12 and the second assembled magnet 14. The first assembled coil 16 and the second assembled coil 18 are movable in the axial directions of the first assembled magnet 12 and the second assembled magnet 14. By the movement of the first assembled coil 16 and the second assembled coil 18, a magnetic flux across the coils is changed, so as to induce electric current.