Seat and terminal

A seat and a terminal are applied to the technical field of seat accessories, the seat comprises a side plate, the side plate comprises a first side plate and a second side plate, the first side plate and the second side plate are in sliding connection, and the first side plate and the second side plate can get close to each other or get away from each other in the first direction; the first direction is the direction from the rear side to the front side of the seat, the side plates are arranged in a split mode, when the seat is in a folded state, the first side plate and the second side plate in the side plates are far away from each other, and therefore a containing space capable of containing the side wings of the backrest is formed between the first side plate and the second side plate, and the problem that when the seat is folded, the side wings of the backrest cannot be folded is solved. The side wings of the backrest seriously interfere with the side plates, and the side plates prevent the backrest from overturning forwards.