The invention discloses a self-adaption overall overturning conveyor. The self-adaption overall overturning conveyor comprises a portal frame system (1), a conveying arm frame (2), an arm frame bracket (3), a double-cylinder windlass (4), a support roller (5), a tension device (6) and an automatic control system, and is characterized in that the portal frame system, the double-cylinder windlass and the arm frame bracket are mounted on a ship deck; the conveying arm frame adopts an overall truss type carbon fiber and carbon steel composite structure, and is provided with the support roller and the tension device; the back section is hinged with the fixed bracket; the double-cylinder windlass is connected with an arm frame pulley set through a steel wire rope by a portal frame pulley set; a pressure sensor is mounted on the portal frame; a tension sensor is mounted at the tail end of the steel wire rope; and the whole conveyor is controlled through an automatic control system. The conveyor can realize automatic retraction and unfolding of the portal frame and the conveying arm frame through the automatic control system, and has such advantages as full automation of retraction and unwinding, automatic belt tensioning, good safety, convenience for installation and operation and wide conveying range.