Capacitive sensing board eraser and capacitive writing board

The utility model discloses a capacitive sensing blackboard eraser and a capacitive writing board, relates to the technical field of capacitive whiteboard erasers, and solves the technical problems that the wiping effect of the existing capacitive sensing blackboard eraser is poor and the service life of the blackboard eraser is influenced after ink marks on the capacitive writing board are erased for a long time. The device comprises an erasing block and an eraser body, the erasing block is arranged at the end, away from the handheld end, of the blackboard eraser body and fixedly connected with the blackboard eraser body. The blackboard eraser body is made of a conductive material, or a conductive body is attached to the peripheral side face of the capacitive sensing blackboard eraser. Ink marks actually on the capacitance writing board can be erased through friction force of the erasing block, coupling capacitance is formed between a human body and the capacitance writing board through the conductive perfor