Abstract: Disclosed herein are a rotation body control device capable of suppressing a vibration, and a washing machine including the same. The rotation body control device includes at least two balancing units each including an annular race and a plurality of rolling bodies seated in the race to be moved according to a rotation of the rotation body; a rotation number measuring unit measuring a number of rotations of the rotation body; a detecting unit detecting a rotation speed of the rotation body; an analysis unit analyzing a variation in the rotation speed detected by the detecting unit and calculating a weight of the imbalance occurring in the rotation body; and a control unit controlling the rotation of the rotation body according to the calculated weight of the imbalance by the analyzing unit.