Apparatus for guiding the winding of a line such as an electric cable onto a drum having a central axis. The guiding apparatus is positioned in front of the drum in the winding position thereof, and the drum has a winding action and a reciprocatory movement imparted thereto parallel to and relative to the axis of the drum. The guiding apparatus includes a joint coupled with a stand, a resiliently deflectable guiding arm having one end pivotable about the joint, and a guide mechanism arranged along the arm for guiding the conveyance of the cable. The cable extends in contact with the guide mechanism and along the arm and has an advancing speed of conveyance equal to or less than the drum winding speed. The resiliently deflectable guiding arm is resiliently deflectable in a plane at a right angle to the central axis of the reel.