The present invention relates to an aid system (30) for piloting an aircraft, the aircraft including at least two piloting units each having at least one piloting member that can be actuated by a pilot to command at least one control surface of the aircraft.The piloting aid system (30) includes a module (32) for detecting actions performed on at least one piloting unit and a feedback module (34) indicating, via a man-machine interface (24A, 24B) separate from the piloting members, the movement of said piloting member and/or the force exerted on said piloting member.