Side wing supporting device capable of being automatically adjusted, seat and automobile

The utility model belongs to the technical field of seats, and particularly relates to a side wing supporting device capable of being automatically adjusted, a seat and an automobile. The side wing supporting device comprises a wing plate and a supporting table, the wing plate is rotatably installed on the supporting table through a first rotating shaft, the wing plate can be controlled by a first driving unit to rotate, the supporting table is connected with a fixing plate in a sliding mode, and the supporting table is controlled by a second driving unit to move back and forth in a sliding groove of the fixing plate. The device can be installed on the two sides of a seat, provides lateral supporting force for the waist of the human body, is automatically adjusted in combination with the first driving unit and the second driving unit, and is suitable for people of different body types. When the seat is installed on the automobile, the seat can be adaptively adjusted according to the driving state of the autom