An omnidirectional treadmill is disclosed. An omnidirectional treadmill according to an embodiment of the present invention includes: an inner core having a dome shape having a flat upper surface and having a plurality of inner omnidirectional wheels rotatable in all directions on the surface; an omnidirectional belt that surrounds the inner core, a plurality of cell pads are connected to each other to have a net structure, and is rotatable in all directions around the inner core; a plurality of external rotational supports in contact with the outside of the omnidirectional belt to support the omnidirectional belt, and having an external wheel rotatable to correspond to the rotation of the omnidirectional be And so that the upper surface of the omnidirectional belt is exposed to the outside, it includes a body frame for accommodating the inner core, the omnidirectional belt and the external rotation support.
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