A unit (1) for making pre-shaped absorbent pads (2) for sanitary items is equipped with a continuous conveyor belt (4) with an operating branch (4a) which defines a line (L1) for pad (2) forming and feed the branch (4a) extends along a straight path (P), along which there are three successive stations (20a, 24, 20b) for feeding absorbent material (18, 25) and a plurality of seats (16) designed to accept and retain a given quantity of the absorbent material (18, 25).