Confidential signature board only showing area capable of being read by signer

The utility model provides a confidential signature board only showing a signer readable area, and belongs to the technical field of signature board manufacturing. Comprising a carrier plate, the carrier plate comprises a plate body, two first hook-and-loop fasteners are fixed to the two sides of the upper portion of the plate body in parallel, a magnetic conductive sheet is arranged in the plate body, a rectangular pit is formed in the plate body, and a plurality of magnets are placed on the rectangular pit; the film rolling assembly comprises a film rolling shaft, a spring and end covers, the film rolling shaft comprises a shielding film, the reel is fixedly arranged at one end of the shielding film, a second hook-and-loop fastener is fixedly arranged at the other end of the shielding film, the spring is arranged in the end covers, the end covers are arranged at the two ends of the film rolling shaft, and the spring is connected with the end covers and the film rolling shaft. The film rolling assemblies are