To provide a toy like a frying disk which has the center of gravity on a part other than the center or movable to irregularly rotate to fly.

A weight is set on a part other than the center of this flying disk. The center of gravity is moved with time by moving the weight by a power spring to irregularly fly the disk body. The weight is made movable by remote control to move the center of gravity to enable the disk body to irregularly fly. In the concrete, the center of gravity is made movable by setting a rail 3 which makes the center of gravity of the disk body eccentric and flyable and on which a suitable weight 2 can move.