The utility model relates to education supplies and especially relates to a novel dustproof blackboard eraser. The novel dustproof blackboard eraser comprises a dust receiving shell and a plurality of friction plates arranged in parallel, wherein the dust receiving shell is a shell body provided with an open surface, a felt layer is wrapped on the outer side of the friction plate, the friction plate is vertically and fixedly connected with the two opposite side faces of the dust receiving shell, the friction plate is arranged to be inclined relative to the top face of the dust receiving shell, the friction plate is arranged at the open surface of the dust receiving shell, and the an opening and closing cover is detachably arranged on the back of the dust receiving shell. The included angle between the friction plate and the top face of the dust receiving shell is 45-65 degrees. The novel dustproof blackboard eraser is convenient to use, simple in structure, and low in cost and is capable of effectively reducing the dust generated during the wiping process, and certain beneficial effects are obtained.