The Caudron C.570 was primarily designed to fill a gap in the types of aircraft available to French armed forces, that of a troop-carrier, though it could take on other roles.
Its 7.80 m (25 ft 7 in)-long forward part, reaching aft to the wing trailing edges, housed the crew and up to eighteen troops and was built with aluminium longerons and frames, skinned in light alloy.
The rear part of the fuselage was a welded chrome-molybdenum steel tube girder, fabric covered over a light wooden frame.
[1] It was powered by two 520 kW (700 hp) water-cooled Renault 18Jbr 18-cylinder W engines, mounted on welded steel tubes in the wing centre section with radiators below them.
The C.570's hydraulically retractable main undercarriage had wheels on Messier oleo struts which folded backwards behind the engines, giving it a track of 7.80 m (25 ft 7 in).