The present invention provides a vibration motor having a housing with an accommodation space; a stator having an iron core, a coil, and a yoke; and a vibrator. The vibrator includes a magnetic circuit system having a magnet group, and a pole plate arranged at a side of the magnet group away from the stator. The vibration motor further has an elastic support member supporting the vibrator, and an interval between the stator and the magnet group. The yoke is opposite to the magnet group, and includes a groove formed from a surface opposite to the magnet group away from the magnet group. One of the objects of the present invention is to provide a vibration motor which improves stability of the whole system and reduces negative stiffness.