An electrical connecting device includes a stator consisting of a cylindrical housing, a rotor, a flexible flat cable and a carrier. Being accommodated in an annular space defined between the rotor and the stator, the flat cable has an end fixed to the stator and another end fixed to the rotor. The carrier has a gap in the circumferential direction, providing C-shaped member. The flat cable is wound along the outer periphery of the rotor in one winding direction, while the flat cable is also wound along the inner periphery of the stator in the opposite winding direction, through a turning part of the flat cable. The carrier is provided with a pusher part for pushing the flat cable. The pusher part is formed to project from an inner edge of one circumferential end of the carrier toward another circumferential end around which the turning part of the flat cable is looped. When the flexible flat cable is drawn out of the gap of the carrier, the pusher part serves to depress the swollen part of the flexible flat cable. Consequently, the flexible flat cable can be moved smoothly without buckling.