To quickly and easily wind the string of a yo-yo and to spin the yo-yo like a top.

In order to quickly rotate a yo-yo main body 2 to wind a control string 5, a pivot part 4 is placed at the center of the outside of a disc-shaped yo-yo main body 2 in such a way as to be capable of projecting and retracting. A finger belt provided with a string locking part so that a yo-yo 1 can be spun about the pivot part 4 like a top and so that the upper end of the control string 5 can be easily attached to a finger is removably wound on the finger.