Chair backboard connecting structure and chair backboard

The utility model relates to the technical field of chair assembly, in particular to a chair backboard connecting structure and a chair backboard. The chair back plate connecting structure comprises a containing groove formed in an outer decoration plate and used for containing a connecting piece, a receding groove formed in the bottom of the containing groove, the connecting piece and a connecting screw, the connecting piece is arranged in the containing groove, a penetrating hole and a long hole of the connecting piece correspond to the receding groove, the head of the connecting screw is located in the receding groove, and a threaded part of the connecting screw is connected with an inner plate, so that the inner plate is connected with the outer decoration plate. And no screw is exposed on the outer side of the outer decorative plate, additional covering is not needed, and connection is convenient and rapid. Meanwhile, due to the long hole and the receding groove, the connecting screw can be fixed at any