Dustproof blackboard

The utility model relates to a dustproof blackboard, which comprises a blackboard surface, wherein a dust groove is formed under the blackboard surface; a filtering net is arranged at the upper end of the dust groove; an activated carbon bag is arranged in the dust groove; the dust groove is in a W shape; a sawtooth structure is arranged in the dust groove; the lower part of the blackboard surface is inserted into one opening of the W-shaped part of the dust groove, and the other opening is used for receiving the falling dust. The dustproof blackboard has the advantages that the problem of air pollution caused by long-time floating of dust in classrooms is relieved; the dust is adsorbed by activated carbon, and the problem of reentrainment of dust is prevented; the structure is simple, the cost is low, and the dustproof blackboard can be used for the improvement of the existing blackboard.