A350 aircraft and Boeing787 aircraft are the most advanced representative of modern civil aircraft,which have the relative higher composite material content. The special design forms a large number of hybrid structures between the metal and composite materials such as wing body butt structure. It is of practical significance
to study the docking structure of the two models. The design principle on selection range of the wing body docking process interfaces of the civil aircraft is described. The differences and characteristics of the two types of docking process interface are illustrated, and the structures of the two types of aircraft wing panel butt, the wing beam butt and the outer wing panel-fuselage panel butt are analyzed, and the advantages and disadvantages of connection structures of the two aircrafts above are analyzed and compared in this paper. The influence of the two docking structures on wing assembly and final assembly is explained, and the domestic research status and corresponding design ideas of the hybrid structure connection are expounded. Finally, the characteristics of the docking structure of the two models are summarized.