Blackboard with multiple combination types

The invention discloses a blackboard with multiple combination types. The blackboard comprises a frame, wherein a first movable plate and second movable plates which can move in the front-back direction are arranged in the frame, the second movable plates are located on the two sides of the first movable plate, the outer surface of the first movable plate is flush with the outer surfaces of the second movable plates, the second movable plates on the two sides can be close to each other or far away from each other, push plates are arranged on the back surfaces of the second movable plates, the push plates are hinged to the frame, and the push plates are rotated to drive the second movable plates to rotate towards the first movable plate. According to the blackboard, the first movable plate capable of moving in the front-back direction is arranged, so that the first movable plate and the second movable plates can be located on the same plane, and writing of a teacher is facilitated; the movable and rotatable se