Dust escape free blackboard eraser

The invention relates to a dust escape free blackboard eraser. A brush plate is arranged on the blackboard eraser, a dust collector is arranged below the brush plate, a dust storage box is arranged below the dust collector, and a movable bottom plate is arranged at the tail end of the dust storage box. The invention provides the dust escape free blackboard eraser. By adopting the structure, when the blackboard eraser is used to erase a blackboard, the brush plate is used to clean words written with chalks on the blackboard, and meanwhile, the small dust collector in the blackboard eraser is started, so that falling chalk dust will be concentrated in the dust storage box under the action of the dust collector when the blackboard is erased. After the blackboard is erased, the dust storage box can be taken out through the movable bottom plate, and collected chalk dust is poured into a garbage can, so that the dust escape free blackboard eraser is convenient and practical. 不逸尘黑板擦，黑板擦上设有刷板，刷板下面设有吸尘器，吸尘器下方设有储尘盒，储尘盒