PURPOSE: To permit automatic rewinding of an electric wire by means of simple constitution by providing a rewinding arm which is equipped with a rewinding bar at a top edge and is turnable and shiftable in the vertical and horizontal directions, for an apparatus with which the electric wire is wound-up laternately onto a pair of bobbins.

CONSTITUTION: When winding-up of an electric wire 16 onto a bobbin 8A is completed, a rewinding arm 27 is lowered together with an installation board 25, and the extension part of the electric wire 16 is hooked by the top edge part of a rewinding bar 27b. After the rewinding bar 27b is a little turned in this hook state, the rewinding arm 27 is shifted from a bobbin 8A side to a side 8B by transferring the second movable board 23. Then, the electric wire 16 is wound up in several turns in double state onto the vacant bobbin 8B by gradually elevating the installation board 25, turning the rewinding arm 27 on the vacant bobbin 8B side. In this case, the rewinding bar 27b is a little lowered midway, and a superposed part is formed on a rolled-up part. Then, the electric wire 16 between bobbins 8A and 8B is cut by a cutter 5, and rewinding is completed.