Abstract: An apparatus for laparoscopic-endoscopic surgery is arranged to accommodate a plurality of different surgical instruments and to penetrate the abdominal wall through a single hole. The apparatus includes a piercing laparoscopic cylinder (1), equipped at its external orifice with a multi-instrument base (11, 12, 13) provided with a plurality of holes (14, 15) for receiving said surgical instruments. The piercing laparoscopic cylinder is transversely extendible, the multi-instrument base (12, 12, 13) is elongate and comprises longitudinal ducts registering with holes (14, 15). The apparatus also has a reducer (2) capable of introduction into the piercing laparoscopic cylinder and a number of dividers (3) of variable form and size adapted to be detachably introduced and fitted into the reducer.