To provide a rotary toy which can easily be handled even by a little child and can develop a new playing method.

This toy is provided with a disc-shaped case 1 having light transmissibility on the front face at least, a disc-shaped rotary body 2 pivotally supported inside the case 1 to be freely rotatable and a driving means 3 for driving the rotary body 2. The rotary body 2 is provided with plural light emitting means 22, a rotation detecting means for detecting rotations and a control means for controlling the emission of the light emitting means 22 based on the detected result of the rotation detecting means 21, and the driving means 3 can be operated from the outside of the case 1.