In a coordinate input device which comprises a resistance plate and a pressure-sensitive rubber sheet placed on the resistance plate so that DC voltage is alternately applied to the resistance plates in the X-axis direction and Y-axis direction of the resistance plate, a surface electrode plate is placed on the pressure-sensitive rubber sheet. The surface electrode plate has a soft synthetic resin plate and a metallic electrode layer formed on the surface of the synthetic resin plate, and the metallic electrode layer is so placed on the pressure-sensitive rubber sheet as to contact the pressure-sensitive rubber sheet.