Vertical push-pull blackboard

The utility model relates to the field of teaching equipment, in particular to a vertical push-pull blackboard which comprises a base, a supporting rod fixedly connected to the middle of the base, a frame fixedly connected to the top of the supporting rod, two blackboard bodies clamped to the inner wall of the frame, and a blackboard box fixedly connected to the bottom end of the front face of the frame. A V-shaped groove is formed in the top end of the inner wall of the blackboard box, a dust falling opening is formed in the bottom of the V-shaped groove, a cleaning mechanism is clamped to one side of the inner wall of the dust falling opening, a U-shaped groove is fixedly connected to the bottom end of the inner wall of the blackboard box, and dust collecting boxes are clamped to the two ends of the bottom of the blackboard box correspondingly. When the dust collection box is full of dust, the dust collection box is taken down from the blackboard box through the clamping piece and the clamping groove to be