To provide a grinding method for rolling elements capable of massively and highly precisely grinding the rolling surfaces of the multiple rolling elements at a low cost.

This grinding method of the rolling elements is characterized in that the same-size multiple unit balls are jointed with each other into an immobile state to form a virtual axis linearly penetrating through the centers of the respective unit balls, the rolling surfaces of the respective unit balls of the unit ball line are simultaneously ground by a centerless grinding device, and after the grinding, the unit ball line is taken apart into pieces.